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Journal articles on the topic 'Contaminant detection'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Olson, Nathan D., Justin M. Zook, Jayne B. Morrow, and Nancy J. Lin. "Challenging a bioinformatic tool’s ability to detect microbial contaminants usingin silicowhole genome sequencing data." PeerJ 5 (September 12, 2017): e3729. http://dx.doi.org/10.7717/peerj.3729.

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High sensitivity methods such as next generation sequencing and polymerase chain reaction (PCR) are adversely impacted by organismal and DNA contaminants. Current methods for detecting contaminants in microbial materials (genomic DNA and cultures) are not sensitive enough and require either a known or culturable contaminant. Whole genome sequencing (WGS) is a promising approach for detecting contaminants due to its sensitivity and lack of need fora prioriassumptions about the contaminant. Prior to applying WGS, we must first understand its limitations for detecting contaminants and potential f

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2

Yong, Raymond N., and Edward J. Hoppe. "Application of electric polarization to contaminant detection in soils." Canadian Geotechnical Journal 26, no. 4 (1989): 536–50. http://dx.doi.org/10.1139/t89-067.

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Preliminary experiments indicate the feasibility of constructing for field use a contaminant-detection instrumentation based on dielectric measurements. This study applies the technique of time-domain reflectometry to assess characteristic "signatures" of some selected contaminants and soil–contaminant mixtures. The results imply that a proper differentiation between various signatures can be attained, allowing an assessment in regard to soil–contaminant status. The proposed technique is similar in principle to the induced-polarization method applied in mineral exploration. Key words: electric

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3

Alexis, Kyriacou, Michaelides Michalis, Reppa Vasso, Timotheou Stelios, G. Panayiotou Christos, and M. Polycarpou Marios. "Distributed Contaminant Detection and Isolation for Intelligent Buildings." IEEE Transactions on Control Systems Technology 26, no. 6 (2017): 1925–41. https://doi.org/10.5281/zenodo.1012296.

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The automatic preservation of the Indoor Air Quality is an important task of the intelligent building design in order to ensure the health and safety of the occupants. The indoor air quality, however, is often compromised by various airborne contaminants that penetrate the indoor environment as a result of accidents or planned attacks. In this work, we provide the detailed analysis, implementation and evaluation of a distributed methodology for detecting and isolating multiple contaminant events in large-scale buildings. Specifically, we consider the&nbs

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4

Sankary, Nathan, and Avi Ostfeld. "Analyzing multi-variate water quality signals for water quality monitoring station placement in water distribution systems." Journal of Hydroinformatics 20, no. 6 (2018): 1323–42. http://dx.doi.org/10.2166/hydro.2018.162.

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Abstract Placing fixed water quality monitoring stations in a water distribution system can greatly improve the security of the system via prompt detection of poor water quality. In the event that a harmful substance is injected into a water distribution system, large populations can be put at risk of exposure to the contaminant. Promptly detecting the presence of a contaminant will reduce the number of people put at risk of exposure. However, to protect against a wide variety of possible contaminants, a water quality monitoring station will need to identify contamination via recognition of an

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Sogade, John A., Francesca Scira-Scappuzzo, Yervant Vichabian, et al. "Induced-polarization detection and mapping of contaminant plumes." GEOPHYSICS 71, no. 3 (2006): B75—B84. http://dx.doi.org/10.1190/1.2196873.

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Several laboratory and scaled model investigations suggest that organic contaminants affect the surface electrical properties of exposed soils/rocks and therefore produce measurable induced polarization (IP) signatures. However, there is little field evidence of an IP methodology for contaminant mapping. A 2D time-domain IP method is developed for mapping the FS-12 contaminant plume at the Massachusetts Military Reservation (MMR) located in Cape Cod, Massachusetts. The FS-12 plume consists of approximately [Formula: see text] of fuel that erupted from a broken underground pipeline in the early

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6

Pang, Lidong, Xiaowen Pi, Qianyu Zhao, Chaoxin Man, Xinyan Yang, and Yujun Jiang. "Optical nanosensors based on noble metal nanoclusters for detecting food contaminants: A review." Comprehensive Reviews in Food Science and Food Safety 23, no. 1 (2024): 1–34. http://dx.doi.org/10.1111/1541-4337.13295.

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AbstractFood contaminants present a significant threat to public health. In response to escalating global concerns regarding food safety, there is a growing demand for straightforward, rapid, and sensitive detection technologies. Noble metal nanoclusters (NMNCs) have garnered considerable attention due to their superior attributes compared to other optical materials. These attributes include high catalytic activity, excellent biocompatibility, and outstanding photoluminescence properties. These features render NMNCs promising candidates for crafting nanosensors for food contaminant detection,

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7

Haryarta, Gusfianang, Frida Agung Rakhmadi, and Imelda Fajriati. "Analisis Cilok Terkontaminasi Boraks Menggunakan Spektroskopi Fluoresensi Berbasis High Power UV-LED." Sunan Kalijaga Journal of Physics 3, no. 1 (2021): 28–35. https://doi.org/10.14421/physics.v3i1.2318.

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The analysis research of borax contaminant in cilok using high power UV-LED fluorescence spectroscopy system was successfully done. This study aimed to analyze borax in cilok using a high power UV-LED fluorescence spectroscopy system and to determine its precision and detection limits. The stages of research of borax contaminant in cilok was carried out by preparing tools and materials, sampling, data collection, and data processing. Testing of detection limit was carried out with a variety of borax contaminants of 0% - 40% from 20 grams of cilokandprecisiontestingwasdonebyrepeatingthetestofea

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8

Zhang, Kai, Xinlong Song, Meng Liu, Menghua Chen, Jie Li, and Jinglong Han. "Review on the Use of Magnetic Nanoparticles in the Detection of Environmental Pollutants." Water 15, no. 17 (2023): 3077. http://dx.doi.org/10.3390/w15173077.

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Magnetic nanomaterials (MNPs) have been widely used in the detection of pollutants in the environment because of their excellent nano effect and magnetic properties. These intrinsic properties of MNPs have diversified their application in environmental contaminant detection. In this paper, the research status quo of the use of MNPs in detecting organic and inorganic contaminants from wastewater and soil is reviewed. The preparation method and modification technology of magnetic nanoparticles are also described in detail. The application prospect of magnetic nanoparticle composites in the detec

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9

He, Ji Guang. "Introduction of New Methods for Insulator Contaminant Detection." Advanced Materials Research 798-799 (September 2013): 1190–93. http://dx.doi.org/10.4028/www.scientific.net/amr.798-799.1190.

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It is crucial to make insulator contaminant detection owing to that insulator can form pollution flashover when being exposed in outside operating conditions for long term, which can cause great damage. It can effectively prevent accident from happening when timely detecting the contamination on the surface of insulator. This paper provided detailed introduction of three new methods of insulator contaminant detection on the basis of the brief summary of traditional detection methods.

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10

Li, Yu, Jinggang Chu, Guozhen Wei, Sifan Jin, Tiantian Yang, and Bo Li. "Robust Placement of Water Quality Sensor for Long-Distance Water Transfer Projects Based on Multi-Objective Optimization and Uncertainty Analysis." Sustainability 13, no. 4 (2021): 1834. http://dx.doi.org/10.3390/su13041834.

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It is important to place water quality sensors along open channels in long-distance water transfer projects optimally for rapid source identification and efficient management of sudden water contamination. A new framework which considers multiple objectives, including earliest detection time, lowest missing detection rate and lowest sensor cost, and combines the randomness of injected contaminant type and contaminant incident consisting of contaminant intrusion location, time and mass, was established to obtain optimal placement of water quality sensor with better robustness in this paper. The

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11

Alexis, Kyriacou, P. Michaelides Michalis, G. Eliades Demetrios, G. Panayiotou Christos, and M. Polycarpou Marios. "COMOB: A MATLAB toolbox for sensor placement and contaminant event monitoring in multi-zone buildings." Building and Environment Volume 154 (May 1, 2019): 348–61. https://doi.org/10.1016/j.buildenv.2019.02.013.

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The monitoring of the indoor air quality against the presence of contaminant sources is of paramount importance since it directly influences the occupants’ comfort, productivity, health and safety. Various approaches exist in the literature for monitoring and controlling the building environment. However, there is an identified lack of automated tools for evaluating, testing and comparing such approaches. This paper presents COMOB (COntaminat MOnitoring in Buildings), a developed MATLAB toolbox for sensor placement and contaminant monitoring in buildings. Specifically, the COMOB toolbox

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12

Tanaka, Saburo, Takeyoshi Ohtani, Yosuke Uchida, Takumi Chigasaki, and Yoshimi Hatsukade. "Metallic Contaminant Detection System Using Multi-Channel Superconducting Quantum Interference Device (SQUID)." Solid State Phenomena 215 (April 2014): 465–69. http://dx.doi.org/10.4028/www.scientific.net/ssp.215.465.

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Metallic particles with outer dimensions smaller than 100 microns in Li-ion battery cannot be detected using a conventional X-ray imaging system. We propose two systems using high Tc SQUIDs: One is a direct detection type and the other is an indirect type. In the direct detection system, an object with a contaminant is magnetized by a permanent magnet and then the remanent field of the contaminant is detected by SQUID. In the indirect detection system, the principle is based on Faradays law of electromagnetic induction. The diameter of the detection coil is 2 to 3 times larger than the SQUID;

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13

Rahmaningrum, Nadia, Frida Agung Rakhmadi, and Imelda Fajriati. "ANALISIS TAHU TERKONTAMINASI FORMALIN MENGGUNAKAN SISTEM SPEKTROSKOPI FLUORESENSI BERBASIS HIGH POWER UV-LED." Sunan Kalijaga Journal of Physics 2, no. 1 (2020): 29–33. https://doi.org/10.14421/physics.v2i1.2323.

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This research was motivated by the discovery of white tofu preserved using formalin. This study aimed to analyze formalin contaminants in tofu and determine the precision and detection limits of a fluorescence spectroscopy system based on high power UV-LED. This research was conducted in three stages, namely making samples, collecting data, and processing data. The sample was made directly in the tofu factory with the owner and the object used in this study is white tofu which was given a variation of formalin contaminants 0%-50%. Data were collected using a set of fluorescence spectroscopy sy

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14

THÉRIAULT, JEAN-MARC, HUGO LAVOIE, ELDON PUCKRIN, and FRANCOIS BOUFFARD. "PASSIVE STANDOFF DETECTION OF SURFACE CONTAMINANTS: A NOVEL APPROACH BY DIFFERENTIAL POLARIZATION FTIR SPECTROMETRY." International Journal of High Speed Electronics and Systems 18, no. 02 (2008): 251–62. http://dx.doi.org/10.1142/s0129156408005321.

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An approach for the passive standoff detection of surface contaminants by differential polarization FTIR spectrometry is proposed. The surface radiance modeling associated with the method is given. Unpolarized and polarized sensing measurements obtained with the CATSI sensor for the standoff detection of liquid agent VX deposited on high-reflectivity surfaces are presented. The analysis of results indicates that the differential polarization approach is well suited to mitigate sky radiance drifts, which favours unambiguous surface contaminant detections. An experimental and modeling study init

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15

Pederzoli, Riccardo, Delia Tarantino, Louise J. Gourlay, Antonio Chaves-Sanjuan, and Martino Bolognesi. "Detecting the nature and solving the crystal structure of a contaminant protein from an opportunistic pathogen." Acta Crystallographica Section F Structural Biology Communications 76, no. 9 (2020): 392–97. http://dx.doi.org/10.1107/s2053230x20010626.

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The unintentional crystallization of contaminant proteins in the place of target recombinant proteins is sporadically reported, despite the availability of stringent expression/purification protocols and of software for the detection of contaminants. Typically, the contaminant protein originates from the expression organism (for example Escherichia coli), but in rare circumstances contaminants from different sources have been reported. Here, a case of contamination from a Serratia bacterial strain that occurred while attempting to crystallize an unrelated protein from Burkholderia pseudomallei

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16

Hidayati, Lilik, and Nur Lina. "ANALISIS KETIDAKAMANAN STREET FOOD DI SEPANJANG JALAN SILIWANGI." Kesmas Indonesia 9, no. 01 (2017): 1. http://dx.doi.org/10.20884/1.ki.2017.9.01.222.

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Street foods is one of common food for undergraduate students. There are many contaminat wich can contamined street foods, such as biological, phisical, and chemical contaminant. Many health problem can be caused by contaminated food. The purpose of this reseach is to indentify chemical contaminat in street foods that is sold in front of Siliwangi University, Siliwangi street. This research is using survey method with 37 sample of street foods that are taken from 18 food’s seller. Chemical contaminant was indetify using food contaminat detection kit. Individual factor such as education, age, a

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17

Puangngernmak, N., and S. Chalermwisutkul. "Characterization of Heavy Metal Contaminated Wastewater Using a Coaxial Sensor and Electromagnetic Wave Reflection Technique." Applied Mechanics and Materials 548-549 (April 2014): 678–82. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.678.

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Industrial wastewater control is an important issue for protection of the environment. Liquid characterization using radio frequency signal is an interesting approach for selective detection of heavy metal contaminants in industrial wastewater. A simple sensor based on open-ended coaxial structure filled with the liquid under test is proposed. Liquid samples for the experiments are copper, zinc and nickel solutions with various concentrations of 1, 10, 100 and 1000 mg/liter each. From the measurement results using a vector network analyzer (VNA) in combination with the proposed sensor, the con

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18

Conn, Jeffery S. "Pathways of Invasive Plant Spread to Alaska: III. Contaminants in Crop and Grass Seed." Invasive Plant Science and Management 5, no. 2 (2012): 270–81. http://dx.doi.org/10.1614/ipsm-d-11-00073.1.

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AbstractInvasive plants disperse to new areas via numerous pathways. Study of these pathways helps to focus limited budgets toward prevention and early detection. This study examined potentially invasive seed contaminants in imported crops and grass seed as pathways for plant dispersal to Alaska. Crop and grass seed were purchased from 13 Alaska retail outlets representing 14 seed suppliers. Seed bags were sampled using federally mandated protocols and were analyzed for crop seeds that were not supposed to be included and for weed contaminants. Ninety-five weed and 36 contaminant crop taxa wer

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19

Pronschinske, Matthew A., Steven R. Corsi, and Celeste Hockings. "Evaluating pharmaceuticals and other organic contaminants in the Lac du Flambeau Chain of Lakes using risk-based screening techniques." PLOS ONE 18, no. 6 (2023): e0286571. http://dx.doi.org/10.1371/journal.pone.0286571.

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In an investigation of pharmaceutical contamination in the Lac du Flambeau Chain of Lakes (hereafter referred to as “the Chain”), few contaminants were detected; only eight pharmaceuticals and one pesticide were identified among the 110 pharmaceuticals and other organic contaminants monitored in surface water samples. This study, conducted in cooperation with the Lac du Flambeau Tribe’s Water Resource Program, investigated these organic contaminants and potential biological effects in channels connecting lakes throughout the Chain, including the Moss Lake Outlet site, adjacent to the wastewate

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20

Francois, Clementine M., Faustine Durand, Emeric Figuet, and Nicolas Galtier. "Prevalence and Implications of Contamination in Public Genomic Resources: A Case Study of 43 Reference Arthropod Assemblies." G3: Genes|Genomes|Genetics 10, no. 2 (2019): 721–30. http://dx.doi.org/10.1534/g3.119.400758.

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Thanks to huge advances in sequencing technologies, genomic resources are increasingly being generated and shared by the scientific community. The quality of such public resources are therefore of critical importance. Errors due to contamination are particularly worrying; they are widespread, propagate across databases, and can compromise downstream analyses, especially the detection of horizontally-transferred sequences. However we still lack consistent and comprehensive assessments of contamination prevalence in public genomic data. Here we applied a standardized procedure for foreign sequen

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21

Hidayati, Lilik, and Nur Lina. "ANALISIS KETIDAKAMANAN STREET FOOD DI SEPANJANG JALAN SILIWANGI." Kesmas Indonesia 9, no. 1 (2017): 1. http://dx.doi.org/10.20884/1.ki.2017.9.1.222.

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Street foods is one of common food for undergraduate students. There are many contaminat wich can contamined street foods, such as biological, phisical, and chemical contaminant. Many health problem can be caused by contaminated food. The purpose of this reseach is to indentify chemical contaminat in street foods that is sold in front of Siliwangi University, Siliwangi street. This research is using survey method with 37 sample of street foods that are taken from 18 food�s seller. Chemical contaminant was indetify using food contaminat detection kit. Individual factor such as education, age, a

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22

Yenigül, N. B., A. T. Hendsbergen, A. M. M. Elfeki, and F. M. Dekking. "Detection of contaminant plumes released from landfills." Hydrology and Earth System Sciences Discussions 3, no. 3 (2006): 819–57. http://dx.doi.org/10.5194/hessd-3-819-2006.

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Abstract. Contaminant leaks released from landfills are a significant threat to groundwater quality. The groundwater detection monitoring systems installed in the vicinity of such facilities are vital. In this study the detection probability of a contaminant plume released from a landfill has been investigated by means of both a simulation and an analytical model for both homogeneous and heterogeneous aquifer conditions. The results of the two models are compared for homogeneous aquifer conditions to illustrate the errors that might be encountered with the simulation model. For heterogeneous a

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23

Gomes, Luiz Humberto, Keila Maria Roncato Duarte, Felipe Gabriel Andrino, Ana Maria Brancalion Giacomelli, and Flavio Cesar Almeida Tavares. "A vector carrying the GFP gene (Green fluorescent protein) as a yeast marker for fermentation processes." Scientia Agricola 57, no. 4 (2000): 713–16. http://dx.doi.org/10.1590/s0103-90162000000400018.

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Contaminant yeasts spoil pure culture fermentations and cause great losses in quality and product yields. They can be detected by a variety of methods although none being so efficient for early detection of contaminant yeast cells that appear at low frequency. Pure cultures bearing genetic markers can ease the direct identification of cells and colonies among contaminants. Fast and easy detection are desired and morphological markers would even help the direct visualization of marked pure cultures among contaminants. The GFP gene for green fluorescent protein of Aquorea victoria, proved to be

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Lawrence, Kurt C., William R. Windham, Bosoon Park, and R. Jeff Buhr. "Hyperspectral Imaging for Poultry Contaminant Detection." NIR news 12, no. 5 (2001): 3–6. http://dx.doi.org/10.1255/nirn.627.

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Wei, Qingyi, Qirong Dong, and Hongbin Pu. "Multiplex Surface-Enhanced Raman Scattering: An Emerging Tool for Multicomponent Detection of Food Contaminants." Biosensors 13, no. 2 (2023): 296. http://dx.doi.org/10.3390/bios13020296.

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For survival and quality of human life, the search for better ways to ensure food safety is constant. However, food contaminants still threaten human health throughout the food chain. In particular, food systems are often polluted with multiple contaminants simultaneously, which can cause synergistic effects and greatly increase food toxicity. Therefore, the establishment of multiple food contaminant detection methods is significant in food safety control. The surface-enhanced Raman scattering (SERS) technique has emerged as a potent candidate for the detection of multicomponents simultaneousl

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26

GIFARI, TOUFAN, DEWI ELFIDASARI, and IRAWAN SUGORO. "The effects of contaminant microorganism towards Chelonia mydas eggs hatchery results in Pangumbahan Green Sea Turtles Conservation, Sukabumi, Indonesia." Biodiversitas Journal of Biological Diversity 19, no. 4 (2018): 1207–12. http://dx.doi.org/10.13057/biodiv/d190404.

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Gifari T, Elfidasari D, Sugoro I. 2018. The effects of contaminant microorganism towards Chelonia mydas eggs hatcheryresults in Pangumbahan Green Sea Turtles Conservation, Sukabumi, Indonesia. Biodiversitas 19: 1207-1212. Green sea turtles(Chelonia mydas) is an endangered species, in which its population is continuously decreasing caused by a number of factors.Microorganisms are suspected to have important role in declining eggs hatching success. The aim of this study was to investigate therole of microbial contaminant on the egg hatching success at the green sea turtles conservation area in P

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27

Zhang, Jialu, Huinan Chen, Kaidi Xu, Dongmei Deng, Qixian Zhang, and Liqiang Luo. "Current Progress of Ratiometric Fluorescence Sensors Based on Carbon Dots in Foodborne Contaminant Detection." Biosensors 13, no. 2 (2023): 233. http://dx.doi.org/10.3390/bios13020233.

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Carbon dots (CDs) are widely used in the detection of foodborne contaminants because of their biocompatibility, photoluminescence stability, and ease of chemical modification. In order to solve the interference problem of complexity in food matrices, the development of ratiometric fluorescence sensors shows great prospects. In this review, the progress of ratiometric fluorescence sensors based on CDs in foodborne contaminant detection in recent years will be summarized, focusing on the functionalized modification of CDs, the fluorescence sensing mechanism, the types of ratiometric fluorescence

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Hamel, David, Matthew Chwastek, Saturnino Garcia, Bakhtier Farouk, Moshe Kam, and Kapil R. Dandekar. "Sensor Placement for Urban Homeland Security Applications." International Journal of Distributed Sensor Networks 6, no. 1 (2010): 859263. http://dx.doi.org/10.1155/2010/859263.

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We simulated a sensor network that detects and tracks the release of harmful airborne contaminants in an urban environment. The simulation determines sensor placement in that environment. The effort required integration of models from computational fluid dynamics (CFDs), combinatorial optimization, and population mobility dynamics. These CFD models, coupled with population mobility models, facilitate estimation of the effect of released contaminant on civilian populations. We studied the effects of a contaminant, chlorine gas, as a function of urban environment, prevailing winds, and likely at

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29

Wernette, Daryl P., Juewen Liu, Paul W. Bohn, and Yi Lu. "Functional-DNA–Based Nanoscale Materials and Devices for Sensing Trace Contaminants in Water." MRS Bulletin 33, no. 1 (2008): 34–41. http://dx.doi.org/10.1557/mrs2008.12.

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AbstractTrace contaminant detection in water represents both a grand challenge and great opportunity for materials scientists and engineers. The recent discovery that functional DNA can be obtained to bind selectively to a wide range of contaminants makes it possible to interface these molecules with nanoscale materials, such as gold nanoparticles and quantum dots, to transform the molecular reorganization between functional DNA and contaminants into physically detectable colorimetric and fluorescent signals. Micro- and nanofluidic devices have also played a critical role in lowering the detec

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Bounegru, Alexandra Virginia, Ancuța Dinu Iacob, Cătălina Iticescu, and Puiu Lucian Georgescu. "Electrochemical Sensors and Biosensors for the Detection of Pharmaceutical Contaminants in Natural Waters—A Comprehensive Review." Chemosensors 13, no. 2 (2025): 65. https://doi.org/10.3390/chemosensors13020065.

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This review highlights recent advances in the development of electrochemical sensors and biosensors for detecting pharmaceutical contaminants in water samples, including surface water, wastewater, and bottled water. The electrode modification materials—such as nanomaterials, conductive polymers, and eco-friendly nanocomposites—have shown notable improvements in sensor sensitivity and selectivity, enabling the detection of various pharmaceutical compounds, including diclofenac, ibuprofen, antibiotics, and hormones. Future research directions suggest the use of eco-friendly nanocomposites, the d

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Tanner, Michael A., Brett M. Goebel, Michael A. Dojka, and Norman R. Pace. "Specific Ribosomal DNA Sequences from Diverse Environmental Settings Correlate with Experimental Contaminants." Applied and Environmental Microbiology 64, no. 8 (1998): 3110–13. http://dx.doi.org/10.1128/aem.64.8.3110-3113.1998.

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ABSTRACT Phylogenetic analysis of 16S ribosomal DNA (rDNA) clones obtained by PCR from uncultured bacteria inhabiting a wide range of environments has increased our knowledge of bacterial diversity. One possible problem in the assessment of bacterial diversity based on sequence information is that PCR is exquisitely sensitive to contaminating 16S rDNA. This raises the possibility that some putative environmental rRNA sequences in fact correspond to contaminant sequences. To document potential contaminants, we cloned and sequenced PCR-amplified 16S rDNA fragments obtained at low levels in the a

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Nguyen, Joanna, Devon Richtsmeier, Kris Iniewski, and Magdalena Bazalova-Carter. "Contaminant detection using a CZT photon counting detector with TDI image reconstruction." Journal of Instrumentation 17, no. 05 (2022): P05010. http://dx.doi.org/10.1088/1748-0221/17/05/p05010.

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Abstract Food x-ray inspection systems are designed to detect unwanted physical contaminants in packaged food to maintain a high level of food safety for consumers. Modern day x-ray inspection systems often utilize line scan sensors to detect these physical contaminants but are limited to single or dual energies. However, by using a photon counting detector (PCD), a new generation of food inspection systems capable of acquiring images at more than two energy bins could improve discrimination between low density contaminants. In this work, five type of contaminants were embedded in an acrylic p

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Nguyen, J., P. A. Rodesch, D. Richtsmeier, K. Iniewski, and M. Bazalova-Carter. "Optimization of a CZT photon counting detector for contaminant detection." Journal of Instrumentation 16, no. 11 (2021): P11015. http://dx.doi.org/10.1088/1748-0221/16/11/p11015.

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Abstract In the food industry, X-ray inspection systems are utilized to ensure packaged food is free from physical contaminants to maintain a high level of food safety for consumers. However, one of the challenges in the food industry is detecting small, low-density contaminants from packaged food. Cadmium zinc telluride (CZT) photon counting detectors (PCDs) can potentially alleviate this problem given its multi-energy bin capabilities, high spatial resolution and ability to eliminate electronic noise, which is superior to the conventional energy integrating detector (EID). However, the image

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Chan, C. H. "St. Clair River Head and Mouth Water Quality Monitoring, 1987–89." Water Quality Research Journal 28, no. 2 (1993): 451–72. http://dx.doi.org/10.2166/wqrj.1993.022.

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Abstract Water and suspended sediments samples were collected at the head and mouth of the St. Clair River from 1987 to 1989 for organic contaminant analysis. Higher concentrations and higher frequencies of detection of many organic contaminants. in particular penta- and hexachlorobenzenes, hexachlorobutadiene and octachlorostyrene were measured at the river mouth. Year to year comparisons showed substantial reduction in concentrations of hexachlorobutadiene and octachlorostyrene in suspended sediments.

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Dies, Hannah, Maria Siampani, Carlos Escobedo, and Aristides Docoslis. "Direct Detection of Toxic Contaminants in Minimally Processed Food Products Using Dendritic Surface-Enhanced Raman Scattering Substrates." Sensors 18, no. 8 (2018): 2726. http://dx.doi.org/10.3390/s18082726.

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We present a method for the surface-enhanced Raman scattering (SERS)-based detection of toxic contaminants in minimally processed liquid food products, through the use of a dendritic silver nanostructure, produced through electrokinetic assembly of nanoparticles from solution. The dendritic nanostructure is produced on the surface of a microelectrode chip, connected to an AC field with an imposed DC bias. We apply this chip for the detection of thiram, a toxic fruit pesticide, in apple juice, to a limit of detection of 115 ppb, with no sample preprocessing. We also apply the chip for the detec

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Segal, Elad, and Aharon Gedanken. "Can r-graphene oxide replace the noble metals in SERS studies: the detection of acrylamide." Environmental Chemistry 13, no. 1 (2016): 58. http://dx.doi.org/10.1071/en14245.

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Environmental context The need for detecting and sensing hazardous materials that can contaminate our food and water is growing each and every year. Regulation of these contaminants to safeguard human health depends on the ability to detect them at ultra-low concentrations in the environment. This work proposes a simple and efficient substrate preparation for detecting acrylamide, a toxic and carcinogenic material usually found in drinking water. Abstract Polyacrylamide acts as a very common water purifier worldwide. Unfortunately, it leaves hazardous and toxic residues of its monomer, acrylam

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Henry, Heather F., and William A. Suk. "Sustainable exposure prevention through innovative detection and remediation technologies from the NIEHS Superfund Research Program." Reviews on Environmental Health 32, no. 1-2 (2017): 35–44. http://dx.doi.org/10.1515/reveh-2016-0037.

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Abstract Innovative devices and tools for exposure assessment and remediation play an integral role in preventing exposure to hazardous substances. New solutions for detecting and remediating organic, inorganic, and mixtures of contaminants can improve public health as a means of primary prevention. Using a public health prevention model, detection and remediation technologies contribute to primary prevention as tools to identify areas of high risk (e.g. contamination hotspots), to recognize hazards (bioassay tests), and to prevent exposure through contaminant cleanups. Primary prevention succ

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Vaitilingom, Marc, Francois Gendre, and Pierre Brignon. "Direct Detection of Viable Bacteria, Molds, and Yeasts by Reverse Transcriptase PCR in Contaminated Milk Samples after Heat Treatment." Applied and Environmental Microbiology 64, no. 3 (1998): 1157–60. http://dx.doi.org/10.1128/aem.64.3.1157-1160.1998.

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ABSTRACT A fast, sensitive, and target contaminant-modulable method was developed to detect viable bacteria, molds, and yeasts after heat treatment. By reverse transcriptase PCR with elongation factor gene (EF-Tu or EF-1α)-specific primers, the detection level was 10 cells ml of milk−1. The simplicity and rapidity (4 h) of the procedure suggests that this method may be easily transposable to other foods and other contaminants.

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Young, Holly A., Korine N. Kolivras, Leigh-Anne H. Krometis, Cristina E. Marcillo, and Julia M. Gohlke. "Unregulated drinking water contaminants and adverse birth outcomes in Virginia." PLOS Water 3, no. 5 (2024): e0000208. http://dx.doi.org/10.1371/journal.pwat.0000208.

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Through the Unregulated Contaminant Monitoring Rule (UCMR), the Environmental Protection Agency monitors selected unregulated drinking water contaminants of potential concern. While contaminants listed in the UCMR are monitored, they do not have associated health-based standards, so no action is required following detection. Given evolving understanding of incidence and the lack of numeric standards, previous examinations of health implications of drinking water generally only assess impacts of regulated contaminants. Little research has examined associations between unregulated contaminants a

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Morgan, E. L., R. C. Young, C. N. Crane, and B. J. Armigate. "Developing Automated Multispecies Biosensing for Contaminant Detection." Water Science and Technology 19, no. 11 (1987): 73–84. http://dx.doi.org/10.2166/wst.1987.0113.

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Automated biomonitoring may provide real-time functional information from cause/effect relationships between developing toxicity and a representative aquatic animal. However, since the applicability of single-species biomonitoring information may be subject to question when viewed in light of community toxicity and ecological quality control programs, we developed a computer-assisted multiple species biosensing system for water quality monitoring. In addition to fish, emphasis was placed on detecting species-specific bioelectric potentials produced by unrestrained mussels, burrowing mayfly nym

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Jin, Xiaohui, Shixun Pei, Yuanhang Chen, and Wei Hong. "Oil contaminant detection based on differential capacitance." IET Conference Proceedings 2024, no. 13 (2025): 1052–56. https://doi.org/10.1049/icp.2024.3030.

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Tanaka, S., T. Akai, M. Takemoto, et al. "Application of SQUID to magnetic contaminant detection." Physica C: Superconductivity and its Applications 470, no. 20 (2010): 1507–10. http://dx.doi.org/10.1016/j.physc.2010.05.150.

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Galindo-Miranda, J. Manuel, Cecilia Guízar-González, Elías J. Becerril-Bravo, Gabriela Moeller-Chávez, Elizabeth León-Becerril, and Ramiro Vallejo-Rodríguez. "Occurrence of emerging contaminants in environmental surface waters and their analytical methodology – a review." Water Supply 19, no. 7 (2019): 1871–84. http://dx.doi.org/10.2166/ws.2019.087.

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Abstract A new concern about surface water quality is the occurrence of emerging contaminants that have being recognized as a new class of water contaminants such as antibiotics, hormones, pesticides, personal care products and pharmaceutical products. The occurrence of these contaminants in the aquatic environment and especially in surface water is a serious concern because this is usually the source of water for drinking water treatment plants (DWTP). This review provides a summary of the occurrence and the analytical methodology (extraction process, chromatography analysis, detection system

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Liu, Yachen, Jinbin Yang, Junlin Wu, Zehao Jiang, Xinyu Zhang, and Fanjun Meng. "The Application of Multifunctional Metal–Organic Frameworks for the Detection, Adsorption, and Degradation of Contaminants in an Aquatic Environment." Molecules 30, no. 6 (2025): 1336. https://doi.org/10.3390/molecules30061336.

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Water pollution poses a severe threat to both aquatic ecosystems and human health, highlighting the crucial importance of monitoring and regulating its levels in water bodies. In contrast to traditional single-treatment approaches, multiple-treatment methods enable the simultaneous detection and removal of water pollutants using a single material. This innovation not only offers convenience but also fosters a more holistic and effective approach to water remediation. Metal–organic frameworks (MOFs) are versatile porous materials that offer significant potential for use in wastewater treatment.

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Nakai, Tomoo. "Nondestructive Detection of Magnetic Contaminant in Aluminum Casting Using Thin Film Magnetic Sensor." Sensors 21, no. 12 (2021): 4063. http://dx.doi.org/10.3390/s21124063.

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The thin film magneto-impedance sensor is useful for detecting a magnetic material nondestructively. The sensor made by single layer uniaxial amorphous thin film has a tolerance against surface normal magnetic field because of its demagnetizing force in the thickness direction. Our previous study proposed the sensitive driving circuit using 400 MHz high frequency current running through the sensor to detect the logarithmic amplifier. We also confirmed the sensitivity of the sensor within 0.3 T static normal magnetic field, which resulted in detection of 5 × 10−8 T of 5 Hz signal. This paper pr

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Grapentine, Lee, Quintin Rochfort, and Jiri Marsalek. "Benthic Responses to Wet-Weather Discharges in Urban Streams in Southern Ontario." Water Quality Research Journal 39, no. 4 (2004): 374–91. http://dx.doi.org/10.2166/wqrj.2004.050.

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Abstract Urban stormwater and combined sewer overflow (CSO) discharges are important sources of sediment and contaminants (trace metals, PAHs, nutrients and road salts), and cause changes in flow, sediment, chemical and thermal regimes of receiving waters. Over the past several years, benthic conditions of streams representing a range of exposure environments were assessed in Hamilton, Toronto, Oshawa and Kingston, Ontario. Studies progressed from initial surveys of sediment contaminant levels, sediment toxicity and benthic invertebrate community structure to more spatially intensive sampling

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Gu, Changzhi, Zuo Zhang, Shaoxuan Zhang, et al. "Design and Detection Performance of Metal Contaminant Sensor with Triple Coil Structure." Journal of Marine Science and Engineering 13, no. 1 (2024): 59. https://doi.org/10.3390/jmse13010059.

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In marine engineering, the daily management of mechanical equipment needs to ensure that the oil is normal. Oil plays the role of sealing, cooling, lubrication, and other functions in the equipment, and can also be used as hydraulic fluid to transfer energy. By analyzing the state of the oil, it is possible to obtain information about the operation of the equipment, such as judging the wear or failure of the equipment by detecting impurities in the oil. This paper proposes and designs a wireless triple-coil structure oil detection sensor for detecting metal particles in the oil circuit. The se

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Romaniello, Roberto, Giorgio Peri, and Alessandro Leone. "Fluorescence hyper-spectral imaging to detecting faecal contamination on fresh tomatoes." Journal of Agricultural Engineering 47, no. 1 (2016): 7. http://dx.doi.org/10.4081/jae.2016.491.

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Faecal contamination of fresh fruits represents a severe danger for human health. Thus some techniques based on microbiological testing were developed to individuate faecal contaminants but those tests do not results efficient because their non-applicability on overall vegetable unity. In this work a methodology based on hyper-spectral fluorescence imaging was developed and tested to detecting faecal contamination on fresh tomatoes. Two image-processing methods were performed to maximise the contrast between the faecal contaminant and tomatoes skin: principal component analysis and band image

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Gouisset, E., G. Rioland, F. Bourcier, D. Faye, P. Walter, and F. Infante. "Detection and characterization of contamination with fluorescence spectroscopy." IOP Conference Series: Materials Science and Engineering 1287, no. 1 (2023): 012025. http://dx.doi.org/10.1088/1757-899x/1287/1/012025.

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Abstract In the field of failure analysis and in particular molecular and particulate contamination, being able to detect any trace of contaminants during the integration of an orbital spacecraft is crucial. In this context, fluorescence allows not only to detect but also to discriminate contaminants. We studied the fluorescence response of two epoxy adhesives, typical sources of spacecraft contamination in orbit with a portable broadband hyperspectral instrument (UV-Vis-NIR) developed in collaboration with the CNES and Intraspec Technologies, but also with a commercial spectrofluorometer. The

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Kyriacou, Alexis, Michalis P. Michaelides, Vasso Reppa, Stelios Timotheou, Christos G. Panayiotou, and Marios M. Polycarpou. "Distributed Contaminant Detection and Isolation for Intelligent Buildings." IEEE Transactions on Control Systems Technology 26, no. 6 (2018): 1925–41. http://dx.doi.org/10.1109/tcst.2017.2754986.

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