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Journal articles on the topic 'MS detection'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Chiou, Ling Jan, Tai Sheng Yeh, and Jiing Chuan Chen. "LC-MS/MS method for the detection of multiple classes of shellfish toxins." Czech Journal of Food Sciences 37, No. 3 (2019): 173–79. http://dx.doi.org/10.17221/125/2018-cjfs.

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Marine shellfish toxins are seafood safety problems of global concern. Herein the analysis of six shellfish toxins, regulated by European Union, with one single run by LC-MS/MS with acidic mobile phase was developed. After 80% methanol extraction of the shellfish toxins, the crude extract was subjected to HLB SPE cleanup before LC-MS/MS analysis. The method was validated according to Commission Decision 2002/657/EC. For azaspiracid-1 (AZA1), domoic acid (DA), dinophysistoxin-1 (DTX1), okadaic acid (OA), pectenotoxin-2 (PTX2), and yessotoxin (YTX) toxins the recovery rate was 99.4, 92.7, 114.1,

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Henneman, Linda, Arno G. van Cruchten, Simone W. Denis, et al. "Detection of nonsterol isoprenoids by HPLC–MS/MS." Analytical Biochemistry 383, no. 1 (2008): 18–24. http://dx.doi.org/10.1016/j.ab.2008.08.023.

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Wicka, Mariola, Piotr Chołbiński, Dorota Kwiatkowska, and Andrzej Pokrywka. "Detection of psychotropic substances in the blood by LC/MS/MS." Issues of Forensic Science 284 (2014): 60–69. http://dx.doi.org/10.34836/pk.2014.284.3.

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Year on year, one can observe an increase in the use of addictive substances. This leads to occurring the problem of addiction as well as the use of psychoactive substances as a serious hazard to road users. The Regulation of the Minister of Health on agents acting similarly to alcohol and the conditions and manner of conducting research on their presence in the human body, requires adequate benchmarks for performing these tests. An importantfactor, from consultative point of view, is the knowledge of the chemical structure of substances belonging to different groups of drugs of abuse, their m

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4

Zrzavy, Tobias, Alice Wielandner, Lukas Haider, et al. "FLAIR2 post-processing: improving MS lesion detection in standard MS imaging protocols." Journal of Neurology 269, no. 1 (2021): 461–67. http://dx.doi.org/10.1007/s00415-021-10833-x.

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Abstract Background Technical improvements in magnetic resonance imaging (MRI) acquisition, such as higher field strength and optimized sequences, lead to better multiple sclerosis (MS) lesion detection and characterization. Multiplication of 3D-FLAIR with 3D-T2 sequences (FLAIR2) results in isovoxel images with increased contrast-to-noise ratio, increased white–gray-matter contrast, and improved MS lesion visualization without increasing MRI acquisition time. The current study aims to assess the potential of 3D-FLAIR2 in detecting cortical/leucocortical (LC), juxtacortical (JC), and white mat

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Zhu, Kai, Yucan Liu, Qing Sun, Min Zhao, and Lihua Huang. "Determination of Volatile Fuel Oxygenates in Water by Gas Chromatography–Triple Quadrupole Mass Spectrometry: Effect of Automated Sample Preparation Techniques." Water 12, no. 8 (2020): 2266. http://dx.doi.org/10.3390/w12082266.

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Considering the adverse effects of gasoline additives and aromatic compounds on the quality of the water supply and the ecological environment of the water, a methodology, with short chromatographic separation time (22.5 min) and high separation quality, was optimized for the determination of 11 common gasoline additives and aromatic compounds using gas chromatograph coupled with triple quadrupole mass spectrometer (GC–QqQ–MS/MS) system. The extraction procedure of analytes was performed by headspace solid–phase microextraction (HS–SPME) and purge and trap (P&T), respectively. Both of the

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Wattjes, Mike P., Martijn T. Wijburg, Anke Vennegoor, et al. "Diagnostic performance of brain MRI in pharmacovigilance of natalizumab-treated MS patients." Multiple Sclerosis Journal 22, no. 9 (2016): 1174–83. http://dx.doi.org/10.1177/1352458515615225.

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Background: In natalizumab-treated multiple sclerosis (MS) patients, magnetic resonance imaging (MRI) is considered as a sensitive tool in detecting both MS disease activity and progressive multifocal leukoencephalopathy (PML). Objective: To investigate the performance of neuroradiologists using brain MRI in detecting new MS lesions and asymptomatic PML lesions and in differentiating between MS and PML lesions in natalizumab-treated MS patients. The secondary aim was to investigate interrater variability. Methods: In this retrospective diagnostic study, four blinded neuroradiologists assessed

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Amoresano, Angela, Gianluca Monti, Claudia Cirulli, and Gennaro Marino. "Selective detection and identification of phosphopeptides by dansyl MS/MS/MS fragmentation." Rapid Communications in Mass Spectrometry 20, no. 9 (2006): 1400–1404. http://dx.doi.org/10.1002/rcm.2461.

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Yun, So-Mi, Jun-Ho Jang, Il-Shik Shin, Jong-Ok Lee, and Jong-Soo Lee. "Detection of Diarrhetic Shellfish Poisons by LC-MS/MS." Journal of the Korean Society of Food Science and Nutrition 36, no. 7 (2007): 926–31. http://dx.doi.org/10.3746/jkfn.2007.36.7.926.

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Tranova, Yu, P. Yu Myl’nikov, A. V. Shchul’kin, I. V. Chernykh, S. K. Pravkin, and E. N. Yakusheva. "Method for quantitative quercetin detection using HPLC-MS/MS." NAUKA MOLODYKH (ERUDITIO JUVENIUM) 10, no. 3 (2022): 251–58. http://dx.doi.org/10.23888/hmj2022103251-258.

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INTRODUCTION: Human breast cancer resistance protein (BCRP, ABCG2) is a transport protein of ABC superfamily of transporters that uses ATP energy of for its work. BCRP plays an important role in the pharmacokinetics of drugs, therefore all new drugs are recommended to be tested for belonging to its substrates, inducers and inhibitors. The influence of substances on the activity of this transport protein in vitro is evaluated by a change of transmembrane transfer of its substrates, one of which being quercetin. This, in turn, requires the development and validation of a method for its quantitat

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Dello, Simon A. W. G., Hans M. H. van Eijk, Evelien P. J. G. Neis, Mechteld C. de Jong, Steven W. M. Olde Damink, and Cornelis H. C. Dejong. "Ophthalmate detection in human plasma with LC–MS–MS." Journal of Chromatography B 903 (August 2012): 1–6. http://dx.doi.org/10.1016/j.jchromb.2012.06.023.

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Domingues, Pedro. "Protein modification and MS-detection." Free Radical Biology and Medicine 53 (September 2012): S264. http://dx.doi.org/10.1016/j.freeradbiomed.2012.08.068.

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Jangra, Anjali, R. K. Sarin, Biswa Prakash Nayak, and Himanshu Khajuria. "GC-MS/MS-Based Detection and Quantification of Methamphetamine and Mephedrone in Biological Matrices using Modified dSPE Method." Asian Journal of Chemistry 36, no. 9 (2024): 2006–12. http://dx.doi.org/10.14233/ajchem.2024.32061.

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This research presents a technique combining gas chromatography and tandem mass spectrometry (GC-MS/MS) with a modified dispersive solid phase extraction (D-SPE) method for identifying and quantifying methamphetamine (MTPn) and mephedrone (MPDn) in biological samples. These amphetamine-category new psychoactive substances are increasingly popular among young individuals, making their detection crucial. The method involves a clean-up procedure integrated with GC-MS/MS technology, allowing simultaneous detection of both drugs. Operating the analytical column at 40 ºC with sample concentrations r

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Heick, Julia, Markus Fischer, Sandra Kerbach, Ulrike Tamm, and Bert Popping. "Application of a Liquid Chromatography Tandem Mass Spectrometry Method for the Simultaneous Detection of Seven Allergenic Foods in Flour and Bread and Comparison of the Method with Commercially Available ELISA Test Kits." Journal of AOAC INTERNATIONAL 94, no. 4 (2011): 1060–68. http://dx.doi.org/10.1093/jaoac/94.4.1060.

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Abstract To protect the allergic consumer, analytical methods need to be capable of detecting allergens in fnished products that typically contain multiple allergens. An LC/MS/MS method for simultaneous detection of seven allergens was developed and compared with commercially available ELISA kits. The detection capabilities of this novel method were demonstrated by analyzing incurred material containing milk, egg, soy, peanut, hazelnut, walnut, and almond. Bread was chosen as a model matrix. To assess the inﬂuence of baking on the method’s performance, analysis was done before and after baking

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Chan, Chak-Lun, Hogan Kok-Fung Wai, Peng Wu, Siu-Wai Lai, Olivia Sinn-Kay Chan, and Hein M. Tun. "A Universal LC-MS/MS Method for Simultaneous Detection of Antibiotic Residues in Animal and Environmental Samples." Antibiotics 11, no. 7 (2022): 845. http://dx.doi.org/10.3390/antibiotics11070845.

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Detecting and monitoring the usage of antibiotics is a critical aspect of efforts to combat antimicrobial resistance. Antibiotic residue testing with existing LC-MS/MS methods is limited in detection range. Current methods also lack the capacity to detect multiple antibiotic residues in different samples simultaneously. In this study, we demonstrate a methodology that permits simultaneous extraction and detection of antibiotic residues in animal and environmental samples. A total of 30 different antibiotics from 13 classes could be qualitatively detected with our methodology. Further study to

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Day, D., D. J. Kuntz, M. Feldman, and L. Presley. "Detection of THCA in Oral Fluid by GC-MS-MS." Journal of Analytical Toxicology 30, no. 9 (2006): 645–50. http://dx.doi.org/10.1093/jat/30.9.645.

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Wu, Zhuping, Yan Tong, Jianyuan Yu, et al. "The Utilization of MS-MS Method in Detection of GSRs." Journal of Forensic Sciences 46, no. 3 (2001): 14998J. http://dx.doi.org/10.1520/jfs14998j.

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17

Esquivel, Argitxu, Oscar J. Pozo, Lorena Garrostas, et al. "LC-MS/MS detection of unaltered glucuronoconjugated metabolites of metandienone." Drug Testing and Analysis 9, no. 4 (2016): 534–44. http://dx.doi.org/10.1002/dta.1996.

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18

Downs, Melanie L., and Philip Johnson. "Target Selection Strategies for LC-MS/MS Food Allergen Methods." Journal of AOAC INTERNATIONAL 101, no. 1 (2018): 146–51. http://dx.doi.org/10.5740/jaoacint.17-0404.

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Abstract The detection and quantitation of allergens as contaminants in foods using MS is challenging largely due to the requirement to detect proteins in complex, mixed, and often processed matrixes. Such methods necessarily rely on the use of proteotypic peptides as indicators of the presence and amount of allergenic foods. These peptides should represent the allergenic food in question in such a way that their use is both sensitive (no false-negatives) and specific (no false-positives). Choosing such peptides to represent food allergens is beset with issues, including, but not limited to, s

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19

刘, 宇轩. "Research Progress of the Detection of Bisphenol A by Fluorescence Detection Method." Material Sciences 12, no. 12 (2022): 1294–301. http://dx.doi.org/10.12677/ms.2022.1212144.

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20

Kovalczuk, T., J. Poustka, and J. Hajšlová. "HPLC-MS/MS method for analysis of isoproturon in difficult matrix: poppy seeds." Czech Journal of Food Sciences 26, No. 2 (2008): 146–52. http://dx.doi.org/10.17221/2469-cjfs.

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While several validated methods have been developed for analysis of phenylurea herbicides in staple food plants, analytical procedures suitable for their quantification in minor crops such as poppy seeds are not available. For the registration of isoproturon use in this crop, the documentation of dynamics of its residues following treatment was requested. To accomplish this task, HPLC-MS/MS method was developed. Extraction of residues was realised by methanol-water mixture, Supelclean LC-18 SPE cartridges were used for purification of crude extracts. For HPLC separation of isoproturon SPE frac

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21

Li, Meng, Bicheng Lin, and Binling Zhu. "Rapid Screening of Etomidate and Its Analogs in Seized e-Liquids Using Thermal Desorption Electrospray Ionization Coupled with Triple Quadrupole Mass Spectrometry." Toxics 12, no. 12 (2024): 884. https://doi.org/10.3390/toxics12120884.

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The growing popularity of e-cigarettes has raised significant concerns about the safety and potential abuse of these products. Compounds originally used in the medical field, such as etomidate, metomidate, and isopropoxate, have been illegally added to e-liquids, posing substantial risks to consumer health, and facilitating the misuse of illicit drugs. To address these concerns, this study developed a rapid and efficient method for detecting etomidate, metomidate, and isopropoxate in e-liquids using thermal desorption electrospray ionization coupling triple quadrupole mass spectrometry (TD-ESI

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22

Zhu, Fenghua, Beibei Zhang, and Lianqin Zhu. "An up-converting phosphor technology-based lateral flow assay for rapid detection of major mycotoxins in feed: Comparison with enzyme-linked immunosorbent assay and high-performance liquid chromatography-tandem mass spectrometry." PLOS ONE 16, no. 4 (2021): e0250250. http://dx.doi.org/10.1371/journal.pone.0250250.

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Current methods for detection of mycotoxin in feed are time-consuming and tedious. An up-converting phosphor technology-based lateral flow (UPT-LF) assay system is a new emerging technique for analytes detection. The aim of this study was to compare the performance of UPT-LF, an enzyme-linked immunosorbent assay (ELISA) and high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) for detecting aflatoxin B1 (AFB1), zearalenone (ZEN) and deoxynivalenol (DON) in feed. The results showed that the use of UPT-LF for AFB1, ZEN and DON detection exhibited the following: limits of d

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23

Kasprzyk-Pochopień, Joanna, Agnieszka Kamińska, Przemysław Mielczarek, Radosław Porada, Ewa Stępień, and Wojciech Piekoszewski. "The Proteomic Analysis of Platelet Extracellular Vesicles in Diabetic Patients by nanoLC-MALDI-MS/MS and nanoLC-TIMS-MS/MS." Molecules 30, no. 6 (2025): 1384. https://doi.org/10.3390/molecules30061384.

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Platelet extracellular vesicles (PEVs) are emerging as key biomarkers in diabetes mellitus (DM), reflecting altered platelet function and coagulation pathways. This study compares two proteomic techniques—nanoLC-MALDI-MS/MS and nanoLC-TIMS-MS/MS—for analyzing PEVs in diabetic patients, to assess their potential for biomarker discovery. PEVs were isolated from platelet-rich plasma and characterized using tunable resistive pulse sensing (TRPS), Fourier-transform infrared (FTIR) spectroscopy, and transmission electron microscopy (TEM). Proteomic analyses identified significant differences in prot

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Dewi, Kifayati Rosiyanti, Feri Kusnandar, Nancy Dewi Yuliana, et al. "Application of LC-MS/MS Coupled with Various Digestion Methods for the Identification of Porcine Gelatin Markers in Confectionery Matrices." Indonesian Journal of Halal Research 5, no. 2 (2023): 53–66. http://dx.doi.org/10.15575/ijhar.v5i2.21191.

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Gelatin is a high-risk ingredient in terms of its halal status. Liquid chromatography combined with mass spectrometry (LC-MS/MS) was used to identify the source of gelatin based on marker peptides and proved to deliver higher reliability than other methods. However, the digestion method is essential before LC-MS/MS analysis. This research evaluated different digestion methods against selected porcine gelatin marker peptides and assessed LC-MS/MS sensitivity through adulteration experiments in various mixed matrices. The study involved three digestion methods (conventional, microwave, and ultra

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Li, Yang-Fan, Yi Du, Jing-jie Zhao, Li Li, and Hai Lin. "A Dilute-and-Shoot Based UPLC-MS/MS Method for Multimycotoxins Analysis in Astragali radix." Journal of AOAC INTERNATIONAL 102, no. 4 (2019): 1186–93. http://dx.doi.org/10.5740/jaoacint.18-0346.

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Abstract Background: Astragali radix is prone to be contaminated by various mycotoxins, leading to unpredictable threats on the quality and safety of Astragali radix and the health of the consumers. Therefore, the determination of multimycotoxins is imperative. Objective: To develop an efficient, sensitive, fast, and multianalyte method for detecting multimycotoxins in Astragali radix. Methods: A selective dilute-and-shoot pretreatment procedure based ultra-performance LC–tandem MS (UPLC-MS/MS) method was developed for sensitive determination of multimycotoxins in Astragali radix, including af

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Martineau, Tristan, Bruno Maranda, and Christiane Auray-Blais. "UPLC-MS/MS High-Risk Screening for Sphingolipidoses Using Dried Urine Spots." Biomolecules 14, no. 12 (2024): 1612. https://doi.org/10.3390/biom14121612.

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Background: Early detection of sphingolipidoses is crucial to prevent irreversible complications and improve patient outcomes. The use of urine samples dried on filter paper (DUS) is a non-invasive strategy that simplifies the collection, storage, and shipping of samples compared to using liquid urine specimens. Objectives: (1) Develop and validate a multiplex ultra-performance liquid chromatography–tandem mass spectrometry (UPLC-MS/MS) methodology using DUS to quantify twenty-one lysosphingolipids normalized to creatinine for eight different sphingolipidoses. (2) Establish normal reference va

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Michael McCoy. "Waters buys charge detection MS firm." C&EN Global Enterprise 100, no. 5 (2022): 11. http://dx.doi.org/10.1021/cen-10005-buscon13.

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Elnagar, Rehab M., Alshimaa M. Ammar, and Ashraf M. Elaggan. "Improved identification of multiple sclerosis brain lesions with three-dimensional double inversion recovery MRI." Tanta Medical Journal 53, no. 1 (2025): 47–54. https://doi.org/10.4103/tmj.tmj_72_24.

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Background Multiple sclerosis (MS) is a chronic autoimmune disease that results in demyelination within the central nervous system, causing brain lesions and neurological dysfunction. Precise identification of these lesions is essential for proper diagnosis and management. Aim This study aims to assess the effectiveness of three-dimensional double inversion recovery (3D DIR) MRI in detecting MS brain lesions compared to two-dimensional fluid-attenuated inversion recovery (2D FLAIR) and T2-weighted imaging (T2WI). Patients and methods A cross-sectional study involving 49 MS patients (21 patient

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Wu, Siyuan, Yang Feng, Shengjun Chen, et al. "A Novel Strategy for the Detection of Semicarbazide in Crustaceans by Modified QuEChERS Coupled with Hydrophilic Interaction Liquid Chromatography–Tandem Mass Spectrometry." Foods 14, no. 3 (2025): 541. https://doi.org/10.3390/foods14030541.

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Semicarbazide (SEM), a metabolite of nitrofurazone (NFZ), is widely used to detect the illegal application of NFZ in crustaceans. The conventional detection method involves chemical derivatization combined with reversed-phase liquid chromatography–tandem mass spectrometry (RPLC-MS/MS), which is both complex and time-consuming. To address this limitation, a more efficient approach was developed for SEM detection. This study introduces a modified QuEChERS pretreatment method coupled with hydrophilic interaction liquid chromatography–tandem mass spectrometry (HILIC-MS/MS) for detecting SEM in cru

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Bamberger, Casimir, Sandra Pankow, Sung Kyu Robin Park, and John R. Yates. "Interference-Free Proteome Quantification with MS/MS-based Isobaric Isotopologue Detection." Journal of Proteome Research 13, no. 3 (2014): 1494–501. http://dx.doi.org/10.1021/pr401035z.

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Hoefig, Carolin Stephanie, and Josef Köhrle. "LC–MS/MS detection of thyroid hormone metabolites in tissue samples." Expert Review of Endocrinology & Metabolism 7, no. 5 (2012): 511–13. http://dx.doi.org/10.1586/eem.12.48.

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EL-Helbawy, S. M. "Detection of benzodiazepines in hair by FPIA and LC–MS–MS." Toxicology Letters 205 (August 2011): S200. http://dx.doi.org/10.1016/j.toxlet.2011.05.688.

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Karuna, Ratna, Isabelle Christen, Andreas W. Sailer, Francis Bitsch, and Juan Zhang. "Detection of dihydroxycholesterols in human plasma using HPLC–ESI-MS/MS." Steroids 99 (July 2015): 131–38. http://dx.doi.org/10.1016/j.steroids.2015.02.002.

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Eghlimi, Ryan, Xiaojian Shi, Jonathan Hrovat, Bowei Xi, and Haiwei Gu. "Triple Negative Breast Cancer Detection Using LC–MS/MS Lipidomic Profiling." Journal of Proteome Research 19, no. 6 (2020): 2367–78. http://dx.doi.org/10.1021/acs.jproteome.0c00038.

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Potthast, Frank, Jiri Ocenasek, Dorothea Rutishauser, Martin Pelikan, and Ralph Schlapbach. "Database independent detection of isotopically labeled MS/MS spectrum peptide pairs." Journal of Chromatography B 817, no. 2 (2005): 225–30. http://dx.doi.org/10.1016/j.jchromb.2004.12.009.

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SLONUSAKIEWICZ, J., W. NG, J. DAI, A. PASTERNAK, and P. REDDEN. "Frontal affinity chromatography with MS detection (FAC-MS) in drug discovery." Drug Discovery Today 10, no. 6 (2005): 409–16. http://dx.doi.org/10.1016/s1359-6446(04)03360-4.

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Wang, Jinglan, Yangjun Zhang, Hong Jiang, Yun Cai, and Xiaohong Qian. "Phosphopeptide detection using automated online IMAC-capillary LC-ESI-MS/MS." PROTEOMICS 6, no. 2 (2006): 404–11. http://dx.doi.org/10.1002/pmic.200500223.

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Wang, Jinglan, Yangjun Zhang, Hong Jiang, Yun Cai, and Xiaohong Qian. "Phosphopeptide detection using automated online IMAC-capillary LC-ESI-MS/MS." PROTEOMICS 6, no. 4 (2006): 1371. http://dx.doi.org/10.1002/pmic.200690023.

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Li, Xiao Jing, Xi Tang, Xue Hui Zhou, et al. "Determination of Eight Parabens in Water-Based Food Simulants Migrated from Antibacterial Plastic Packaging by LC/MS/MS." Applied Mechanics and Materials 333-335 (July 2013): 1993–97. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.1993.

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A method based on reversed-phase liquid chromatography-tandem mass spectrometry (LC/MS/MS) combined with solid phase extraction (SPE) was developed and validated for qualitative and quantitative detection of eight parabens in three types of water-based food simulants including distilled water, 3% acetic acid, 10% alcohol. Detection limits of eight parabens after SPE procedure were 0.005-0.010 μg/L in distilled water, 0.006-0.015 μg/L in 3% acetic acid and 0.005-0.017 μg/L in 10% alcohol. The relative standard deviations (RSDs) were in the range of 1.90-8.48% for distilled wsater, 1.01-3.73% fo

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Balas, Laurence, Justine Bertrand-Michel, Fanny Viars, et al. "Regiocontrolled syntheses of FAHFAs and LC-MS/MS differentiation of regioisomers." Organic & Biomolecular Chemistry 14, no. 38 (2016): 9012–20. http://dx.doi.org/10.1039/c6ob01597b.

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Le Thi, Lien, Anh Bach Thuy, Khanh Cao Cong, Ha Tran Nguyen, and Hong Hao Le Thi. "Determination of crinamidine in dietary supplements by GC-MS/MS." Heavy metals and arsenic concentrations in water, agricultural soil, and rice in Ngan Son district, Bac Kan province, Vietnam 1, no. 1 (2018): 3–7. http://dx.doi.org/10.47866/2615-9252/vjfc.48.

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The determination of crinamidine in dietary supplements content by mass spectrometry (GC-MS/MS) was developed and validated. The method was performed on the DB5MS column (30m x 0,25mm; 0,25 &mu;m), in combination with the tandem mass spectrometry. The parameters of the method were evaluated for selectivity,&nbsp;calibration curve, accuracy, precision, limit of detection (LOD) and limit of quantification (LOQ). The calibration&nbsp;curve was highly linear (the coefficient of determination 0.9970) within the concentration range of 5ppm-50ppm.&nbsp;The recovery at three concentrat

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Quintanilla-Villanueva, Gabriela Elizabeth, Araceli Sánchez-Álvarez, Raisa Estefanía Núñez-Salas, Melissa Marlene Rodríguez-Delgado, Donato Luna-Moreno, and Juan Francisco Villarreal-Chiu. "Recent Advances in Monitoring Microbial Toxins in Food Samples by HPLC-Based Techniques: A Review." Analytica 5, no. 4 (2024): 512–37. http://dx.doi.org/10.3390/analytica5040035.

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This study examines the significant impact of bacterial, algal, and fungal toxins on foodborne illnesses, and stresses the importance of advanced detection techniques, such as high-performance liquid chromatography (HPLC)-based methodologies. It emphasizes the urgent need for further advancements in these techniques to ensure food safety, as they offer significant benefits, including low detection limits and the ability to be combined with other techniques to detect a wide range of toxins. In this regard, HPLC has emerged as a versatile and sensitive analytical technique for this purpose. Vari

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Kahl, Kristin W., Joshua Z. Seither, and Lisa J. Reidy. "LC-MS-MS vs ELISA: Validation of a Comprehensive Urine Toxicology Screen by LC-MS-MS and a Comparison of 100 Forensic Specimens." Journal of Analytical Toxicology 43, no. 9 (2019): 734–45. http://dx.doi.org/10.1093/jat/bkz066.

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Abstract Toxicology laboratories commonly employ immunoassay methodologies to perform an initial drug screen on urine specimens to direct confirmatory testing. Due to limitations of immunoassay testing and the need to screen for a broader range of drugs with lower limits of detection at a lower cost, mass spectrometry screening techniques have gained favor in the toxicology field. A liquid chromatography–tandem mass spectrometry (LC-MS-MS) urine screening panel was developed and validated for 52 drugs and metabolites. A simple dilute-and-shoot with enzymatic hydrolysis technique was utilized t

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Venkateshwarlu, Punna, and Mehul M. Patel. "Method development and validation of cabozantinib by LC-MS/MS." Pharmacia 69, no. (2) (2022): 407–13. https://doi.org/10.3897/pharmacia.69.e82684.

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The objective of this method is to be simple, precise, and economical performed by LC-MS/MS instrument. The mass spectrometric determination was performed using electrospray ionization in the positive mode with multiple reaction monitoring (MRM) mode and precursor to product ion transition to product ion of m/z 502.2 > 323 for cabozantinib. The effective separation of cabozantinib was achieved X-Bridge (2.1 mm × 100 mm, 3.5 µ) column and the mobile phase composition is 0.2% formic acid: acetonitrile (40:60 v/v), pumped at 0.12 ml/min flow rate. The Rt of cabozantinib was found to be 1.34 mi

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Liang, Shih Shin, Po Tsun Shen, Yow Ling Shiue, Yu-Tzu Chang, and Pei Sung. "Development of a Quantitative Method for Monitoring 2-Mercaptobenzothiazole Based on Isotopic Iodoacetamide and Tandem MS." Current Analytical Chemistry 16, no. 7 (2020): 947–54. http://dx.doi.org/10.2174/1573411015666191114145109.

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Background: MBT, a rubber accelerator, was popularly used in rubber manufacturing. However, the experts from the International Agency for Research on Cancer suggested that MBT was listed in Group 2A carcinogenic material. Methods: Therefore, we developed a quantification method based on LC-QqQ-MS/MS, using isotopic iodoacetamide and 13C2, D2-iodoacetamide to react with the thiol group on MBT to generate the iodoacetamide-modified MBT as a standard for a calibration curve and the 13C2, D2-iodoacetamidemodified MBT analog as an internal standard. Results: Using LC-QqQ-MS/MS, we explored a Multip

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Dziadosz, Marek, Michael Klintschar, and Jörg Teske. "Practical aspect of dimer adduct formation in small-molecule drug analysis with LC-MS/MS." Bioanalysis 13, no. 22 (2021): 1671–79. http://dx.doi.org/10.4155/bio-2021-0165.

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Aim: Since the MS/MS based detection of small-molecule drugs with poor or even no ion fragmentation is a challenge in bioanalysis, alternative MS/MS detection strategies were in focus of this study and applied in the field of forensic toxicology. Material & methods: Analyte quantification with liquid chromatography-tandem mass spectrometry of problematic drugs was studied by the application of dimer adduct formation and valproic acid (VPA) was used as a model drug. VPA adduct ions could be identified during infusion experiments and the VPA dimer adduct ion was optimized for the detection.

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Lanzarotta, Adam, Travis Falconer, Heather McCauley, et al. "Simultaneous Orthogonal Drug Detection Using Fully Integrated Gas Chromatography with Fourier Transform Infrared Detection and Mass Spectrometric Detection." Applied Spectroscopy 71, no. 5 (2016): 1050–59. http://dx.doi.org/10.1177/0003702816668534.

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Analytes that co-elute and yield nearly identical electron ionization (EI) mass spectra, as well as analytes that yield non-specific EI fragmentation patterns, have been identified using fully integrated gas chromatography with direct deposit Fourier transform infrared detection and mass spectrometric detection (GC/FT-IR/MS). While the IR detector proved to be more selective for identifying analytes such as synthetic cannabinoids and weight loss drugs, it was limited by a relatively high detection limit of 8.4 parts per million (ppm) for non-targeted identification of sibutramine based on a si

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Singh, Awantika, Pratibha Singh, Brijesh Kumar, Sudhir Kumar, Kapil Dev, and Rakesh Maurya. "Detection of flavonoids from Spinacia oleracea leaves using HPLC-ESI-QTOF-MS/MS and UPLC-QqQLIT-MS/MS techniques." Natural Product Research 33, no. 15 (2018): 2253–56. http://dx.doi.org/10.1080/14786419.2018.1489395.

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Geddes, Kristin, Gary Adamson, Neal Dube, Susan Crathern, and Richard C. King. "Semi-automated tandem mass spectrometric (MS/MS) triple quadrupole operating parameter optimization for high-throughput MS/MS detection workflows." Rapid Communications in Mass Spectrometry 23, no. 9 (2009): 1303–12. http://dx.doi.org/10.1002/rcm.3983.

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Wang, Yantian, Haifeng Li, Peng Jia, Guo Zhang, Taoyang Wang, and Xiaoyun Hao. "Multi-Scale DenseNets-Based Aircraft Detection from Remote Sensing Images." Sensors 19, no. 23 (2019): 5270. http://dx.doi.org/10.3390/s19235270.

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Deep learning-based aircraft detection methods have been increasingly implemented in recent years. However, due to the multi-resolution imaging modes, aircrafts in different images show very wide diversity on size, view and other visual features, which brings great challenges to detection. Although standard deep convolution neural networks (DCNN) can extract rich semantic features, they destroy the bottom-level location information. The features of small targets may also be submerged by redundant top-level features, resulting in poor detection. To address these problems, we proposed a compact

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