Relevant bibliographies by topics / Direct speciation analysis

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Academic literature on the topic 'Direct speciation analysis'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Direct speciation analysis"

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Krull, Ira S., and Kenneth W. Panaro. "Trace Analysis and Speciation for Methylated Organotins by HPLC-Hydride Generation-Direct Current Plasma Emission Spectroscopy (HPLC-HY-DCP)." Applied Spectroscopy 39, no. 6 (1985): 960–68. http://dx.doi.org/10.1366/0003702854249402.

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Total tin determinations can be accomplished at trace levels (10–25 ppb) by a continuous on-line hydride generation (HY), followed by direct current plasma (DCP) emission spectroscopy (HY-DCP). This approach is applicable for organotin compounds such as mono-, di-, and trimethyltin chloride, as well as stannous and stannic cations. HY-DCP methods of total tin analysis have been applied to a number of spiked and actual samples. Detection limits, calibration plots, sensitivities, and related analytical parameters have been evaluated. Organotin analysis and speciation can be accomplished by the i
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Mladenova, Elisaveta, Ivanka Dakova, Dimiter Tsalev, and Irina Karadjova. "Mercury determination and speciation analysis in surface waters." Open Chemistry 10, no. 4 (2012): 1175–82. http://dx.doi.org/10.2478/s11532-012-0027-0.

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AbstractA sorbent L-cysteine grafted silica gel has been evaluated for separation and enrichment of dissolved inorganic i-Hg(II) and methylmercury CH3Hg(I) from surface waters at sub-µg L−1 concentrations. Chemical parameters for mercury species enrichment and separation have been optimized. Analytical schemes for the determination of Hg species, using selective column solid phase extraction (SPE) with continuous flow chemical vapor generation atomic absorption spectrometry (CF-CVG-AAS) or inductively coupled plasma-mass spectrometry (ICP-MS) were developed. Possibilities for on-site SPE enric
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Karpukhina, Evgeniya A., Elena A. Vlasova, Dmitry S. Volkov, and Mikhail A. Proskurnin. "Comparative Study of Sample-Preparation Techniques for Quantitative Analysis of the Mineral Composition of Humic Substances by Inductively Coupled Plasma Atomic Emission Spectroscopy." Agronomy 11, no. 12 (2021): 2453. http://dx.doi.org/10.3390/agronomy11122453.

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Five sample-preparation techniques were compared to quantify 31 elements in coal humic substances (HS) by ICP–AES from the viewpoints of complete isolation and speciation of elements. They include, for bulk composition, preparation of an aqueous colloidal HS solution followed by direct injection of the sample without decomposition and ashing followed by metaborate fusion; for element speciation, preparation of an aqueous colloidal HS solution followed by centrifugation and direct analysis without decomposition for water-soluble species; treatment with boiling nitric acid; and microwave-assiste
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Lajin, Bassam, and Walter Goessler. "Direct speciation analysis of organophosphorus environmental pollutants in water by HPLC-ICPMS/MS." Talanta 196 (May 2019): 357–61. http://dx.doi.org/10.1016/j.talanta.2018.12.075.

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Peng, Congnan, Juntong Zhou, Chi Li, Yuxin Chen, Qing Huo, and Fei Xie. "Research progress on speciation analysis of arsenic in traditional Chinese medicine." Open Chemistry 20, no. 1 (2022): 23–39. http://dx.doi.org/10.1515/chem-2022-0123.

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Abstract Traditional Chinese medicine contains arsenic (As), which in the natural environment accumulates in plants during the growth of Chinese medicinal materials; there are mineral medicines containing As in Chinese patent medicine such as As4S4, As2S3, etc. Due to the toxicity of As-containing compounds and its role in inflammation and treatment of cancers such as leukemia, it is necessary to analyze the chemical form of As. A comprehensive investigation of the compound forms of heavy metals rather than the simple total amount of elements will lay the foundation for the scientific and obje
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Ortega, Richard. "Direct speciation analysis of inorganic elements in single cells using X-ray absorption spectroscopy." J. Anal. At. Spectrom. 26, no. 1 (2011): 23–29. http://dx.doi.org/10.1039/c0ja00153h.

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Kińska, Katarzyna, Barbara Żelazko, Olga Gajewska, Magdalena Borowska, Monika Sadowska, and Beata Krasnodębska-Ostręga. "Separation of Inorganic Forms of Tellurium Using On-Site SPE Followed by ICP-MS or ICP-OES—The Right Solution for Water Monitoring." Molecules 30, no. 2 (2025): 303. https://doi.org/10.3390/molecules30020303.

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Tellurium, recognized as one of the technology-critical elements, should be considered as a xenobiotic. Its application, i.a. in the growing photovoltaic industry, raises concerns about Te(IV) and Te(VI) release to the environment. As both forms differ in mobility and toxicity, Te speciation should be included in water monitoring, but problems with speciation changes occurring during sampling, transport, and sample storage require the use of on-site separation of Te forms. A simple procedure based on solid phase extraction (SPE) with the anionic exchange mechanism (SAX, involving commercially
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Lowry, David B., Jennifer L. Modliszewski, Kevin M. Wright, Carrie A. Wu, and John H. Willis. "The strength and genetic basis of reproductive isolating barriers in flowering plants." Philosophical Transactions of the Royal Society B: Biological Sciences 363, no. 1506 (2008): 3009–21. http://dx.doi.org/10.1098/rstb.2008.0064.

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Speciation is characterized by the evolution of reproductive isolation between two groups of organisms. Understanding the process of speciation requires the quantification of barriers to reproductive isolation, dissection of the genetic mechanisms that contribute to those barriers and determination of the forces driving the evolution of those barriers. Through a comprehensive analysis involving 19 pairs of plant taxa, we assessed the strength and patterns of asymmetry of multiple prezygotic and postzygotic reproductive isolating barriers. We then reviewed contemporary knowledge of the genetic
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Bresson, Carole, Christèle Colin, Frédéric Chartier, and Christophe Moulin. "Cobalt Speciation Study in the Cobalt—Cysteine System by Electrospray Ionization Mass Spectrometry and Anion-Exchange Chromatography Inductively Coupled Plasma Atomic Emission Spectrometry." Applied Spectroscopy 59, no. 5 (2005): 696–705. http://dx.doi.org/10.1366/0003702053945912.

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This paper describes the ability of the combination of electrospray ionization mass spectrometry (ESI-MS) and anion-exchange chromatography coupled with inductively coupled plasma atomic emission spectrometry (AEC-ICP-AES) for cobalt speciation study in the binary cobalt–cysteine system. ESI-MS, allowing the identification and the characterization of the analytes, is used as a technique complementary to AEC-ICP-AES, providing elemental information on the separated species. The methods have been developed through the study of samples containing Co2+ and 1-fold to 5-fold molar ratios of cysteine
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Bacquart, Thomas, Guillaume Devès, and Richard Ortega. "Direct speciation analysis of arsenic in sub-cellular compartments using micro-X-ray absorption spectroscopy." Environmental Research 110, no. 5 (2010): 413–16. http://dx.doi.org/10.1016/j.envres.2009.09.006.

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Book chapters on the topic "Direct speciation analysis"

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Drew, Richard A. I., and Meredith C. Romig. "Species and speciation." In The fruit fly fauna (Diptera: Tephritideae: Dacinae) of Papua New Guinea, Indonesian Papua, Associated Islands and Bougainville. CABI, 2022. http://dx.doi.org/10.1079/9781789249514.0004.

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Abstract This chapter discusses two species models, which are diametrically opposed. The first, often called the 'biological species concept', defines species in terms of 'reproductive isolation', convinced that species arise when subsets of a population are split off and remain geographically isolated over evolutionary time. If and when such new species are reunited with their founder population, interbreeding does not occur, or if it does, infertile progeny result. Hence, from the biological species concept, natural selection is a primary agent of change and directly selects for new species.
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Krull, Ira S., and Wm Childress. "Chapter 9 Interfacing of Gc/Hplc with Direct Current Plasma (Dcp) Emission Spectroscopic Detection for Trace Metal Analysis and Speciation." In Journal of Chromatography Library. Elsevier, 1991. http://dx.doi.org/10.1016/s0301-4770(08)60852-0.

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Pagliano, Enea, and Zoltán Mester. "Solid Phase Microextraction for Trace Element Determination: The Fiber and Its Evolution." In Evolution of Solid Phase Microextraction Technology. The Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/bk9781839167300-00095.

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Trace element determination and speciation at the part-per-trillion level (ng L−1) are challenging for most elemental detectors and become harder when complex samples are analyzed. Solid phase microextraction (SPME) can provide matrix separation along with analyte preconcentration which are essential steps to obtain interference free and measurable signals for quantitation of inorganics at these low levels. Fiber SPME was introduced first and it is still an indispensable tool for Hg and Sn speciation, and for the analysis of volatile organometallic metabolites. In recent years, several other S
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Conference papers on the topic "Direct speciation analysis"

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Lagad, Vishal, Sridhar Srinivasan, and Russell D. Kane. "Software System for Automating Internal Corrosion Direct Assessment of Pipelines." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04197.

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Abstract Assessment of internal corrosion of pipelines is a complex task, requiring integration of substantial scientific and engineering analyses in multiple disciplines, including thermodynamics, electro-chemistry, fluid dynamics and metallurgy. The authors, over the last ten years, have developed a widely used corrosion prediction model to predict corrosion in aqueous systems. This software system has been extended to corrosion prediction and assessment in pipelines, and provides a rigorous framework to characterize corrosion of pipelines from a stand point of water phase behavior, speciati
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Leach, David G., Wei Wang, Chao Yan, Dillon Mattis, Ron MacLeod, and Wei Wei. "Molecular Deep Dive into Oilfield Microbiologically Influenced Corrosion: a Detailed Case Study of MIC Failure Analysis in an Unconventional Asset." In CONFERENCE 2022. AMPP, 2022. https://doi.org/10.5006/c2022-17948.

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Abstract This work details a microbiologically influenced corrosion (MIC) failure analysis case study for a produced water pipeline. A pipeline in a shale and tight asset experienced heavy corrosion and ultimate failure within a 7-month period, with estimated corrosion rate at 161 mils per year (MPY), or 4.1 mm per year (MMPY). Upon removal by the inspection team, heavy white deposit buildup (a suspected microbial biofilm) was observed directly associated with the corrosion failure on top of a black scale underlayer. Detailed assessments were performed using ATP photometry, qPCR speciation, an
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Geissler, Brett, Renato De Paula, Carrie Keller-Schultz, Jennifer Lilley, and Vic Keasler. "Data Mining to Prevent Microbiologically Influenced Corrosion?" In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-4080.

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Abstract Oilfield microorganisms are directly responsible for many problems in the oil and gas industry, including microbiologically influenced corrosion, biofouling, reservoir souring, as well as employee injury. Recent efforts in both industrial and academic microbiology labs have been focused on identifying the particular types of bacteria and archaea responsible for causing these issues. This knowledge will assist in the design of better prevention, treatment, and control strategies for microbial activity. A series of in-depth analyses were carried out on a database of field samples submit
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Hakeem, Mohannad, James Anderson, Gopichandra Surnilla, and Shuya Shark Yamada. "Characterization and Speciation of Fuel Oil Dilution in Gasoline Direct Injection (DI) Engines." In ASME 2015 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/icef2015-1072.

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Fuel dilution in oil is a known issue for gasoline direct injection (DI) engines especially in colder climates and for customers with short, lightly-loaded driving cycles. In this work, oil samples were generated using a cold oil fuel accumulation test. Gas chromatography (GC) was used to speciate the hydrocarbons accumulated in the oil and characterize their quantity, type, molecular weight distribution, and volatility. Further testing and analysis was done to characterize the fuel hydrocarbons that evaporate from oil during engine warm-up conditions. The results demonstrate how the wide rang
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LeBlanc, Simon, Linyan Wang, Xiao Yu, and Ming Zheng. "Investigation of Dimethyl Ether Dual-Fuel Combustion Using Propane and Ethanol as Premixed Fuel." In 2023 JSAE/SAE Powertrains, Energy and Lubricants International Meeting. Society of Automotive Engineers of Japan, 2023. http://dx.doi.org/10.4271/2023-32-0018.

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<div class="section abstract"><div class="htmlview paragraph">The combustion and emission characteristics of dual-fuel combustion were investigated using dimethyl ether direct injection and premixed low-carbon fuels. Dimethyl ether was used as the direct injection fuel for its high reactivity and low propensity to form particulate matter. Ethanol and Propane, two fuels of low reactivity, were premixed in the intake port. An injection timing sweep of varying premixed energy shares and engine loads was tested. Combustion analysis was conducted based on in-cylinder pressure measuremen
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Leblanc, Simon, Binghao Cong, Jace Leach, Xiao Yu, Graham Reader, and Ming Zheng. "Energy Conversion Efficacy of Neat Dimethyl Ether Combustion with Heat Release Characterization and Emission Analysis." In WCX SAE World Congress Experience. SAE International, 2025. https://doi.org/10.4271/2025-01-8417.

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<div class="section abstract"><div class="htmlview paragraph">Dimethyl ether (DME) is widely regarded as a suitable energy source for compression ignition power systems because of its high reactivity. It has been widely reported that DME possesses a significantly low propensity to form soot, hindering the innate NO<sub>x</sub>-soot trade-off encountered with diesel fuel operation. Beyond the fuel-borne oxygen content of DME, its unique physical properties present a contrasting combustion behavior which may be advantageous to direct injection systems, especially concerni
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Dev, Shouvik, Prasad Divekar, Kelvin Xie, Xiaoye Han, Xiang Chen, and Ming Zheng. "A Study of Combustion Inefficiency in Diesel LTC and Gasoline-Diesel RCCI via Detailed Emission Measurement." In ASME 2014 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icef2014-5656.

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Reduction of engine-out NOx emissions to ultra-low levels is facilitated by enabling low temperature combustion (LTC) strategies. However, there is a significant energy penalty in terms of combustion efficiency as evidenced by the accompanying high levels of hydrocarbon (HC), carbon monoxide (CO), and hydrogen emissions. In this work, the net fuel energy lost as a result of incomplete combustion in two different LTC regimes is studied. The first LTC strategy, partially premixed compression ignition (PPCI), is investigated using a single, high pressure, in-cylinder injection of diesel fuel alon
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Pei, Yuanjiang, Marco Mehl, Wei Liu, Tianfeng Lu, William J. Pitz, and Sibendu Som. "A Multi-Component Blend as a Diesel Fuel Surrogate for Compression Ignition Engine Applications." In ASME 2014 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icef2014-5625.

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A mixture of n-dodecane and m-xylene is investigated as a diesel fuel surrogate for compression ignition engine applications. Compared to neat n-dodecane, this binary mixture is more representative of diesel fuel because it contains an alkyl-benzene which represents an important chemical class present in diesel fuels. A detailed multi-component mechanism for n-dodecane and m-xylene was developed by combining a previously developed n-dodecane mechanism with a recently developed mechanism for xylenes. The xylene mechanism is shown to reproduce experimental ignition data from a rapid compression
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