Relevant bibliographies by topics / GC-ICP-MS

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'GC-ICP-MS'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "GC-ICP-MS"

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Clough, Robert, Chris F. Harrington, Steve J. Hill, Yolanda Madrid, and Julian F. Tyson. "Atomic spectrometry update: review of advances in elemental speciation." Journal of Analytical Atomic Spectrometry 35, no. 7 (2020): 1236–78. http://dx.doi.org/10.1039/d0ja90026e.

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Clough, Robert, Chris F. Harrington, Steve J. Hill, Yolanda Madrid, and Julian F. Tyson. "Atomic Spectrometry Update: review of advances in elemental speciation." Journal of Analytical Atomic Spectrometry 31, no. 7 (2016): 1330–73. http://dx.doi.org/10.1039/c6ja90030e.

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Clough, Robert, Chris F. Harrington, Steve J. Hill, Yolanda Madrid, and Julian F. Tyson. "Atomic spectrometry update: review of advances in elemental speciation." Journal of Analytical Atomic Spectrometry 34, no. 7 (2019): 1306–50. http://dx.doi.org/10.1039/c9ja90028d.

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Clough, Robert, Chris F. Harrington, Steve J. Hill, Yolanda Madrid, and Julian F. Tyson. "Atomic Spectrometry Update: review of advances in elemental speciation." Journal of Analytical Atomic Spectrometry 33, no. 7 (2018): 1103–49. http://dx.doi.org/10.1039/c8ja90025f.

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Clough, Robert, Chris F. Harrington, Steve J. Hill, Yolanda Madrid, and Julian F. Tyson. "Atomic spectrometry update: review of advances in elemental speciation." Journal of Analytical Atomic Spectrometry 32, no. 7 (2017): 1239–82. http://dx.doi.org/10.1039/c7ja90028g.

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Harrington, Chris F., Robert Clough, Steve J. Hill, Yolanda Madrid, and Julian F. Tyson. "Atomic Spectrometry Update: review of advances in elemental speciation." Journal of Analytical Atomic Spectrometry 30, no. 7 (2015): 1427–68. http://dx.doi.org/10.1039/c5ja90028j.

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Clough, Robert, Chris F. Harrington, Steve J. Hill, Yolanda Madrid, and Julian F. Tyson. "Atomic Spectrometry Update: review of advances in elemental speciation." Journal of Analytical Atomic Spectrometry 36, no. 7 (2021): 1326–73. http://dx.doi.org/10.1039/d1ja90026a.

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Sánchez, Raquel, Fabien Chainet, Vincent Souchon, Sylvain Carbonneaux, Charles-Philippe Lienemann, and José-Luis Todolí. "Silicon speciation in light petroleum products using gas chromatography coupled to ICP-MS/MS." Journal of Analytical Atomic Spectrometry 35, no. 10 (2020): 2387–94. http://dx.doi.org/10.1039/d0ja00156b.

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A gas chromatography method coupled to ICP-tandem mass spectrometry (GC-ICP-MS/MS) was validated for silicon speciation method for light petroleum products with a detector response independently of sample matrix and silicon chemical form.
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Wehmeier, Silvia, Rob Ellam, and J�rg Feldmann. "Isotope ratio determination of antimony from the transient signal of trimethylstibine by GC-MC-ICP-MS and GC-ICP-TOF-MS." Journal of Analytical Atomic Spectrometry 18, no. 9 (2003): 1001. http://dx.doi.org/10.1039/b302242k.

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Faßbender, Sebastian, Marcus von der Au, Maren Koenig, et al. "Species-specific isotope dilution analysis of monomethylmercury in sediment using GC/ICP-ToF-MS and comparison with ICP-Q-MS and ICP-SF-MS." Analytical and Bioanalytical Chemistry 413, no. 21 (2021): 5279–89. http://dx.doi.org/10.1007/s00216-021-03497-z.

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AbstractA recently introduced inductively coupled plasma-time-of-flight-mass spectrometer (ICP-ToF-MS) shows enhanced sensitivity compared to previous developments and superior isotope ratio precision compared to other ToF and commonly used single-collector ICP-MS instruments. Following this fact, an improvement for isotope dilution ICP-MS using the new instrumentation has been reported. This study aimed at investigating whether this improvement also meets the requirements of species-specific isotope dilution using GC/ICP-MS, where short transient signals are recorded. The results of the analysis of monomethylmercury (MMHg) of a sediment reference material show that isotope ratio precision of ICP-MS instruments equipped with quadrupole, sector-field, and time-of-flight mass analyzers is similar within a broad range of peak signal-to-noise ratio when analyzing one isotopic system. The procedural limit of quantification (LOQ) for MMHg, expressed as mass fraction of Hg being present as MMHg, w(Hg)MMHg, was similar as well for all investigated instruments and ranged between 0.003 and 0.016 μg/kg. Due to the simultaneous detection capability, the ICP-ToF-MS might, however, be more favorable when several isotopic systems are analyzed within one measurement. In a case study, the GC/ICP-ToF-MS coupling was applied for analysis of MMHg in sediments of Finow Canal, a historic German canal heavily polluted with mercury. Mass fractions between 0.180 and 41 μg/kg (w(Hg)MMHg) for MMHg, and 0.056 and 126 mg/kg (w(Hg)total) for total mercury were found in sediment samples taken from the canal upstream and downstream of a former chemical plant. Graphical abstract
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Dissertations / Theses on the topic "GC-ICP-MS"

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Rodrigues, Jairo Lisboa. "Avaliação de técnicas acopladas à espectrometria de massas com plasma (ICP-MS) visando o fracionamento e a especiação química de mercúrio em sangue e plasma." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/60/60134/tde-13082010-100725/.

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O Mercúrio (Hg) é um dos mais tóxicos poluentes do meio ambiente. Ele existe basicamente em três formas: Mercúrio elementar (Hg0), ou Hg metálico, mercúrio inorgânico (Hg-i), principalmente o cloreto mercúrico e o mercúrio orgânico (Hg-o), representado principalmente pelo metilmercúrio (MeHg) e etilmercúrio (EtHg), sendo que as formas orgânicas do Hg são mais tóxicas. Sendo assim, é de suma importância que se tenha métodos de fracionamento (Hg t, Hg-i e Hg-o pela diferença) e de especiação de mercúrio (Hg-i, MeHg, EtHg) para diferenciação das espécies de mercúrio em matrizes biológicas. Neste sentido, o presente trabalho teve como objetivos o desenvolvimento de três métodos analíticos rápidos, simples e sensíveis para: i) fracionamento entre Hg-t e Hg-i em sangue/plasma (Hg-o pela diferença) utilizando sistema de geração de vapor frio em linha com ICP-MS (CV ICP-MS); ii) especiação de Hg em amostras de sangue e plasma utilizando o acoplamento HPLC-ICP-MS; iii) especiação de Hg em amostras de sangue utilizando o acoplamento GC-ICP-MS. No método de fracionamento de mercúrio foi feito o preparo de amostras utilizando hidróxido de tetrametilamônio (TMAH) à temperatura ambiente. No método de especiação por HPLC-ICP-MS foi feita a extração das espécies utilizando banho ultrassônico, ao passo que no método GC-ICP-MS foi feita a extração das espécies assistida por microondas. O método CV ICP-MS foi comparado com a geração de vapor utilizando absorção atômica (CV AAS) não tendo diferença estatística entre os dois métodos. Para validação dos métodos foi utilizado Material de Referência Certificado (NIST 966) e outros Materiais de Referência. Os métodos foram aplicados para análise de amostras de sangue de populações Ribeirinhas da Amazônia brasileira expostas ao mercúrio. Os métodos demonstraram ser simples e rápidos, podendo facilmente serem implantados em rotina de laboratórios clínicos.<br>Mercury (Hg) is one of the most toxic environmental pollutants. It exists primarily in three forms: elemental mercury (Hg0), or metallic mercury, inorganic mercury (Hg-i), particularly mercuric chloride and organic mercury (Hg-o), mainly represented by methylmercury (MeHg) and ethylmercury (EtHg), and the organic forms of mercury are more toxic than the inorganic ones. Then, it is very important the development of simple and fast methods for mercury fractionation (T-Hg, Hg-i and Hg-o by the difference) or speciation (Hg-i, MeHg, EtHg) in biological samples. Then, the aims of this work were to evaluate three analytical methods for: i) mercury fractionation in blood/plasma samples (Hg-t, Hg-i and Hg-o by difference) by using a ICP-MS on line coupled to a cold-vapor generation system (CV ICP-MS), ii) Hg speciation in blood and plasma by using LC coupled to ICP-MS; iii) Hg speciation in blood samples with the use of GC coupled to ICP-MS. For the fractionation method, samples were previously incubated with tetramethylammonium hydroxide (TMAH) at room temperature. On the other hand, for the speciation of Hg in blood/plasma by using HPLC-ICP-MS the extraction of Hg species was carried out with the use of ultrasonic energy. For the speciation methodology with GC-ICP-MS the extraction of Hg species was carried out with the use of microwave-assisted extraction. Validation of the proposed methods were evaluated based on the analysis of the SRM NIST 966 and ordinary blood samples collected from riparians living in the Brazilian Amazon exposed to mercury. In general the proposed methodologies proved to be simple, fast and easily applied in routine analysis by clinical laboratories.
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Demuth, Natascha. "Massenspektrometrische Isotopenverdünnungsanalyse (MSIVA) als Validierungsmethode für Bestimmungen von Methylquecksilber mittels GC-ICP-MS." [S.l. : s.n.], 2001. http://ArchiMeD.uni-mainz.de/pub/2001/0132/diss.pdf.

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Silva, Elidiane Gomes da 1983. "Combinação de técnicas para a determinação de espécies de selênio." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248605.

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Orientadores: Marco Aurélio Zezzi Arruda, Fábio Augusto<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-21T15:26:25Z (GMT). No. of bitstreams: 1 Silva_ElidianeGomesda_D.pdf: 2153115 bytes, checksum: 5169aef7da6fd6ddcc74f0fd71a98fe7 (MD5) Previous issue date: 2012<br>Resumo: No Capítulo 1, é proposta a combinação das técnicas de microextração em fase sólida com a espectrometria de absorção atômica em forno de grafite para extração de Se(IV) derivado, seguida de detecção por GC-MS. O método é aplicado com sucesso na determinação de Se total em materiais de referência certificado (BCR-414 and SRM 1643e), sendo obtidas recuperações de 97% para a água (SRM 1643e) e 101% para o plâncton (BCR-414). O método também é aplicado para determinação de selênio em amostra de medicamento manipulado a base de quelato de selênio. No Capítulo 2, a técnica de HPLC com troca aniônica acoplada a ICP-MS, é usada para identificação e determinação de quatro espécies de selênio (Se(IV), Se(VI), selenometionina e selenocistina) em amostras biológicas (plâncton, castanha-do-pará, urina e folhas de girassol). A extração das espécies, presente em plâncton (BCR-414), castanha-do-pará e folhas de girassol, é realizada com água, e um teste de simulação de digestão gastrointestinal também é aplicado para identificar as espécies de selênio bioacessíveis em castanha do Pará. O Se(IV) é a principal espécie extraída no plâncton, com maior concentração de selênio no extrato. A castanha-do-pará possui, principalmente, selenocistina e selenometionina, sendo que somente a selenometionina é identificada como bioacessível. O estudo de especiação de selênio por HPLC-ICP-MS sugere a presença de selenocistina em urina de homens e mulheres. As folhas de girassol, de plantas cultivadas com solução de selenito apresentam um maior número de espécies de selênio, em comparação a planta controle<br>Abstract: In Chapter 1, the combination of the techniques of solid phase microextraction with atomic absorption spectrometry graphite furnace is proposed, using an SPME fiber device and graphite furnace (GF) for extracting Se compounds. The extracted compounds are separated and detected by GC-MS. The method is successfully applied to the total Se determination in certified reference materials (BCR-414 and SRM 1643e). The SPME-GF method combined with GC-MS is also applied to the determination of total selenium in a commercial drug sample (selenium chelate). In Chapter 2, the anion-exchange HPLC technique coupled to ICP-MS is used for identification and determination of four selenium species (Se(IV), Se(VI), selenomethionine and selenocystine) in biological samples (plankton, Brazil nuts, urine and sunflower leaves). The extraction of the species is carried out using water for plankton (BCR-414), Brazil nuts and sunflower leaf. A simulated gastrointestinal digestion is also used to identify bioaccessible selenium in Brazil nuts. The Se(IV) is the predominant specie in the plankton, with the highest selenium concentration in the extract. The Brazil nuts contain selenomethionine and selenocystine species, but only selenomethionine is identified as bioaccessible. The study of selenium speciation by HPLC-ICP-MS suggests the presence of selenocystine in the urine of women and men. The sunflower leaves of plants cultivated with selenite have a higher number of selenium species compared to the control plants<br>Doutorado<br>Quimica Analitica<br>Doutora em Ciências
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Diaz-Bone, Roland Arturo. "Untersuchung metall(oid)organischer Verbindungen nach biologischer Abfallbehandlung mittels einer neu entwickelten GC-ICP-MS-Methode." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=98253566X.

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Kresimon, Jutta. "Untersuchung humaner Körperflüssigkeiten und Ausscheidungsprodukte auf metall- und metalloidorganische Verbindungen mittels HG/LT-GC/ICP-MS." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=968638465.

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Haas, Karsten. "Evaluation of GC-ICP-MS method for the determination of volatile metal(loid) compounds in environmental gas samples." Thesis, University of Aberdeen, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430377.

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The aim of this study is to perform multielemental determinations of volatile organometal(loid) compounds (VOMs) in environmental gases such as landfill gas and sewage sludge fermentation gases. The analytical method focuses on the on-line coupling of capillary GC with ICP-TOF-MS and provide excellent separation as well as sensitive element selective detection.  It involves a cryotrapping step for these (VOMs) such as hydrides, methylated and permethylated species of e.g. As, Sb, Sn, Bi, Hg, Pb etc.  In-house standards were generated in Tedlar<sup>® </sup>bags and a classical external calibration (R<sup>2</sup> >0.99) was applied. The precision of injections was good (RSD = 3-11%, N=10) and the standards were reproducibly generated (RSD = 3.20%, N=3). A total number of 4 landfill sites and 5 sewage sludge treatment sites were sampled.  One landfill site contained 15 different Sn-compounds, 5 species of which had a concentration of more than 13 ng/l, with a maximum concentration of 1050 ng/l for Me<sub>4</sub>Sn.  Overall, the concentration range of most of the Sn-compounds was 0,01-0,5 ng/l and some unknown species could also be identified.  In addition, the permethylated species of As, Se, Sb and Bi could be detected in the range of 0,01 – 117 ng/l.  Although their concentration was usually relatively low (at 0,01 – 0,09 ng/l), the variety of volatile Sn-compounds in the sludge fermentation gas samples was quite astonishing.  Me<sub>3</sub>Bi and Me<sub>3</sub>Sb were the dominant species in the sludge fermentation gases at concentrations of up to 42 ng/l.
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Clutterbuck, Amberlie A. "Method Development for the Collection and Instrumental Analysis of Harmful Compounds in Mainstream Hookah Smoke." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1491227953201259.

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Kim, Alexander Walter. "Construction and validation of a GC-ICP-MS instrument for the analysis of organometals and other trace element species." Thesis, University of Plymouth, 1993. http://hdl.handle.net/10026.1/1676.

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Vike, Kristine. "Oil spill forensics : Identification of sources for oil spills by using data generated by GC-MS and ICP-MS combined with multivariate statistics and the COSIWeb database." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for kjemi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-24920.

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This work has been a preliminary study, aimed at investigating whether or not trace metal Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) analysis could be a viable tool in the oil spill investigation toolbox, after having been abandoned over 20 years ago. The sample material was two previous oil spills, Full City and Server, and various heavily weathered oil samples gathered from islands off the Tr&#248;ndelag coast. The islands were Kya, Sula, Vesterkalven, Storkalven, Kunna, and the bay Kjerv&#229;gsundet on the larger island Fr&#248;ya. The samples were prepared in a laboratory and analysed by Gas Chromatography-Flame Ionization Detector (GC-FID), Gas Chromatography-Mass Spectrometry-Selective Ion Monitoring (GC-MS-SIM) and ICP-MS. Through integration of key elements in the oil, also known as biomarkers, by an online database called COSIWeb, the weathered samples were classified as &#147;crude oil&#148;, &#147;non-NS (North Sea) crude oil&#148;, &#147;bunker oil&#148;, &#147;unknown&#148; and &#147;not oil&#148;. This classification was used as a guide to assess the viability of the trace metal analysis done by ICP-MS. The database also provided correlation calculations and five of the weathered bunker oil samples were linked to oils outside the database by &#147;probable match&#148;. Principal Component Analysis (PCA) was used to investigate the ability each dataset had to classify the different weathered oil types and oil spill samples Full City and Server. Subsequently, Partial Least Squares-Regression (PLS-R) was used to investigate the stability and robustness of both datasets from GC-MS-SIM and ICP-MS together, before Partial Least Squares-Discriminant Analysis (PLS-DA) was applied to investigate if the clusters seen in PCA were significant. By PLS-DA two subgroups of crude oils were identified, possibly related to terrestrial or marine source material in the oil. Of the 46 weathered samples found on various islands, 14 samples were classified as non-NS crude oils, 9 samples were classified as crude oils, 11 samples were classified as bunker oils, 7 samples were classified as unknown oil samples, and 5 samples were classified as not oil. The last group could be oil-like material such as plastic, rubber, coal or other organic material. The most important trace metal ratios identified in this study were ratios which have been previously been singled out as important in oil analysis. These were Ni/V, V/S, U/Pb and Mn/Fe. Other ratios were helpful as well, but these were the most influential ones. The Ni/V ratio was able to separate Full City samples from Server samples without any outliers or fuzzy classification.
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Nguyen, Thu-Hoai. "Abiotic methylation of inorganic mercury in natural waters : Method development for determination of monomethylmercury in natural waters by GC-ICP-MS." Thesis, Umeå universitet, Kemiska institutionen, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-150627.

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Book chapters on the topic "GC-ICP-MS"

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Cowles, Daniel, Mark W. Raynor, and William M. Geiger. "GC/MS, GC/AED, and GC-ICP-MS Analysis of Electronic Specialty Gases." In Trace Analysis of Specialty and Electronic Gases. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118642771.ch6.

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Lobinski, Ryszard, Gaetne Lespes, Joanna Szpunar, and Brice Bouyssiere. "Gas Chromatography with Inductively Coupled Plasma Mass Spectrometric Detection ( GC- ICP MS)." In Advances in Chromatography. CRC Press, 2003. http://dx.doi.org/10.1201/9780203911266.ch3.

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Tesfalidet, Solomon. "Determination of Organometallic Compounds Using Species Specific Isotope Dilution and GC-ICP-MS." In Advanced Gas Chromatography - Progress in Agricultural, Biomedical and Industrial Applications. InTech, 2012. http://dx.doi.org/10.5772/31602.

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Trisunaryanti, Wega, Karna Wijaya, Desi Suryani, and Uswatul Chasanah. "The Effect of HNO3 and/or NaOH Treatments on Characteristics of Mordenite." In Advances in Geopolymers Synthesis and Characterization [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96444.

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Modification of mordenite had been performed by HNO3 and/or NaOH treatments and used as a catalyst in the hydrotreating of pyrolyzed α-cellulose. The Si/Al ratio of mordenites was analyzed by Inductively Coupled Plasma (ICP), the acidity was gravimetrically determined using ammonium vapor adsorption, the crystallinity was identified by X-ray Diffraction (XRD), and pore characters of mordenites (BHM, BAM0.1, and BAM0.5) were analyzed using Gas Sorption Analyzed (GSA). Catalytic activity and selectivity of the mordenites were evaluated in the hydrotreating of pyrolyzed α-cellulose under 20 mL minute−1 H2 gas flow at 450 °C for 2 h with the weight ratio of catalyst:feed was 1:60. The liquid products were analyzed using Gas Chromatography-Mass Spectrometer (GC–MS). The acidity of mordenites decreased along with the increase of Si/Al rasio, except for the AM0.1 mordenite. The average pore diameter of BHM, BAM0.1 and BAM0.5 was 2.96; 3.34 and 4.53 nm, respectively. The BAM0.1 showed the highest catalytic activity in producing liquid fraction (64.04 wt%). The BAM0.5 showed the highest catalytic selectivity towards biofuels, i.e. 1-pentene 0.44 (wt%); 2-heptyne 2.75 (wt%) and 1-propanol 3.05 (wt%) from the hydrotreating process of pyrolyzed α-cellulose.
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Ullah Khan, Inam, and Syed Aftab Hussain Shah. "Optimization and Characterization of Novel and Non-Edible Seed Oil Sources for Biodiesel Production." In Botany - Recent Advances and Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97496.

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Biodiesel mainly comes from edible oil, and there is little research on its yield from non-edible sources with low-cost oil. It is paramount to investigate the non-edible oil resources which may lead to advance the commercial feasibility of biodiesel and cost effectiveness as well as resolve the food issues. This chapter describes four novel non-edible seed oil sources comprising Koelreuteria paniculata, Rhus typhina, Acacia farnesiana and Albizzia julibrissin for biodiesel production. We aimed to optimize different reaction parameters for oil extraction, alkali-catalyzed transesterification process for maximal biodiesel production and finally evaluate its compatibility with mineral diesel. The optimization factors in transesterification included the molar ratio of methanol to oil, reaction time, stirring intensity, catalyst concentration and temperature. Two methods have been described including Soxhlet and mechanical for extraction of seed oil. The synthesized esters were evaluated and characterized through the nuclear magnetic resonance (NMR; 1H and 13C), Fourier transform infrared (FT-IR) and gas chromatography–mass spectrometry (GC–MS) and the total conversion of crude oil to fatty acid methyl esters (FAMEs) were established. The inductively coupled plasma-optical emission spectrometry (ICP-OES) and Elemental Analyzer (EA) were used for evaluation of elemental concentration. The physico-chemical characterizations of the biodiesel, i.e., flash point, pour point, cloud point, and density were within the American Society for Testing and Materials (ASTM; D6751) and European Standards ((EN14214). Koelreuteria paniculata produced highest biodiesel oil content by Soxhlet extraction (28–30%) followed by the Albizzia julibrissin (19–24%), Acacia farnesiana (23%), Rhus typhina (20–22%). The density ranged from 0.83–0.87 @ 15°C (g/cm3) and the kinematic viscosity ranged from 3.75–6.3 (mm2/s) among all the plant sources. Koelreuteria paniculata had highest Na (5456.2), Cr (1246.8), Ni (658.36), and Al (346.87) elemental concentrations (μg/g) than other plant sources. The elemental percent of C, H, N, and O of biodiesel ranged from 72.54–76.86, 11.25–13.34, 1.97–2.73, and 9.86–12, respectively. In conclusion, these non-edible plant seeds offer a cheap source of renewable energy and can be easily grown on barren and wastelands and contribute to efficient biodiesel production to mitigate the energy crisis.
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Conference papers on the topic "GC-ICP-MS"

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Buzoianu, Mirella, Mihail Radu, and George Victor Ionescu. "Recent progress in chemical measuring capabilities in INM as a result of EMRP/EMPIR Programme." In 19th International Congress of Metrology (CIM2019), edited by Sandrine Gazal. EDP Sciences, 2019. http://dx.doi.org/10.1051/metrology/201920004.

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New metrology capabilities in chemical area are of great interest as they underpin the traceability of measurement results reported in environment, health or food sectors. To develop such capabilities a consistent research work is needed. Since 2009, the European Metrology Research Program (EMRP) enabled the National Institute of Metrology (INM) from Romania to join several Joint Research Projects (JRPs) in chemical field. Main outcomes of this helped INM in developing and implementing measurement capabilities in gas chromatography (GC) and inductive couple plasma mass spectrometry (ICP-MS). Accordingly, a brief review of the best practice achieved at INM after participating in ENV08 and SIB09 is described. Further, the European Metrology Programme for Innovation and Research (EMPIR) facilitated expanding the existing metrology capabilities/infrastructure within the frame of two research potential projects (RPOT) in chemical field. Aspects regarding developing ICP-MS technique for measuring mass fractions of elements in natural matrix are presented in the frame of EMPIR RPOT1601. Also, some developments are presented in gas chromatography as a result of participating in the EMPIR RPOT1602.
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Kanai, Taizo, Masahiro Furuya, Takahiro Arai, et al. "Effect of Two-Phase Flow Structure in Decontamination Factor of Filtered Containment Venting System." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30385.

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In order to gain the best use of filtered containment venting systems (FCVSs), the decomtamination factor of FCVSs is to be investigated as a function of system parameter including steam flow rate, pressure, temperature, water level, and operating time. A full-height test facilities were designed and constructed in Central Research Institute of Electric Power Industry (CRIEPI), Japan to evaluate the decontamination factor (DF) in FCVSs. The target types are the orifice and the venturi FCVSs. The height and the internal diameter of the cylindrical test vessel is 8 m and 0.5 m. Bubbly flows were visualized through the view window up to 0.8 MPa and 170 °C. Steam bubbles in 0.2 wt% sodium thiosulfate and 0.5 wt% sodium hydroxide were found to be much smaller than those in water. The DF were evaluated for the aerosol, elemental iodine and organic iodine. The installed aerosol optical spectrometer measures the number density and the diameter of aerosols. The concentrations of elemental iodine were quantified with an inductively-coupled plasma with mass spectrometry (ICP-MS). The concentration of organic iodine was quantified with a gas chromatography with mass spectrometry (GC-MS). In order to investigate two-phase flow dynamics in the vessel, separate effect tests were conducted with air-water test facility. The height of cylindrical test vessel is 8 m. Visual observation was conducted for two internal diameter levels: 0.05 and 0.5 m. High speed video frames were recorded through the transparent (acrylic) vessel wall. Wire-Mesh Sensors (WMS) were installed to acquire a cross-sectional void fraction to compare with DF in the facility. On the basis of the obtained database, we develop the FCVSs performance evaluation technique and propose an optimal FCVSs operation method for a further safety improvements of the nuclear power plant.
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3

Woerner, Joerg, Sonja Margraf, and Walter Hackel. "Remediation of a Uranium-Contamination in Ground Water." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7270.

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The former production site of NUKEM where nuclear fuel-elements were developed and handled from 1958 to 1988 was situated in the centre of an industrial park for various activities of the chemical and metallurgical industry. The size of the industrially used part is about 300.000m2. Regulatory routine controls showed elevated CHC (Chlorinated Hydro-Carbons) values of the ground water at the beginning of the 1990’s in an area which represented about 80.000 m2 down-gradient of locations where CHC compounds were stored and handled. Further investigations until 1998 proved that former activities on the NUKEM site, like the UF6 conversion process, were of certain relevance. The fact that several measured values were above the threshold values made the remediation of the ground water mandatory. This was addressed in the permission given by the Ministry for Nuclear Installations and Environment of Hesse according to §7 of the German atomic law in October 2000 [1]. Ground water samples taken in an area of about 5.000 m2 showed elevated values of total Uranium activity up to between 50 and 75 Bq/l in 2002. Furthermore in an area of another 20.000m2 the samples were above threshold value. In this paper results of the remediation are presented. The actual alpha-activities of the ground waters of the remediation wells show values of 3 to 9Bq/l which are dominated by 80 to 90% U-234 activity. The mass-share of total Uranium for this nuclide amounts to 0,05% on average. The authority responsible for conventional water utilisation defined target values for remediation: 20μg/l for dissolved Uranium and 10μg/l for CHC [2]. Both values have not yet been reached for an area of about 10.000 m2. The remediation process by extracting water from four remediation wells has proved its efficiency by reduction of the starting concentrations by a factor of 3 to 6. Further pumping will be necessary especially in that area of the site where the contaminations were found later during soil remediation activities. Only two wells have been in operation since July 2002 when the remediation technique was installed and an apparatus for direct gamma-spectroscopic measurement of the accumulated activities on the adsorbers was qualified. Two further remediation wells have been in operation since August 2006, when the installed remediation technique was about to be doubled from a throughput of 5 m3/h to 10 m3/h. About 20.000 m3 of ground water have been extracted since from these two wells and the decrease of their Uranium-concentrations behaves similar to that of the two other wells being extracted since the beginning of remediation. Both, total Uranium-concentrations and the weight-share of the nuclides U-234, U-235 and U-238 are measured by ICP-MS (Inductively Coupled Plasma – Mass Spectrometry) besides measurements of Uranium-Alpha-Activities in addition to the measurement of CHC components of which PCE (Perchlor-Ethene) is dominant in the contaminated area. CHC compounds are measured by GC (Gas Chromatography). Down-gradient naturally attenuated products are detected in various compositions. Overall 183.000m3 of ground water have been extracted. Using a pump &amp; treat method 11 kg Uranium have been collected on an ion-exchange material based on cellulose, containing almost 100 MBq U-235 activity, and almost 15 kg of CHC, essentially PCE, were collected on GAC (Granules of Activated Carbon). Less than 3% of the extracted Uranium have passed the adsorber-system of the remediation plant and were adsorbed by the sewage sludge of the industrial site’s waste water treatment. The monthly monitoring of 19 monitoring wells shows that an efficient artificial barrier was built up by the water extraction. The Uranium contamination of two ground water plumes has drastically been reduced by the used technique dependent on the amounts of extracted water. The concentration of the CHC contamination has changed depending on the location of temporal pumping. Thereby maximum availability of this contaminant for the remediation process is ensured. If locations with unchanged water quality are detected electrochemical parameters of the water or hydro-geologic data of the aquifer have to be taken into further consideration to improve the process of remediation.
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Reports on the topic "GC-ICP-MS"

1

Mitroshkov, Alexandre V., Lirong Zhong, and Linda M. P. Thomas. Analysis of Perfluorinated, Pharmaceutical, Personal Care Compounds and Heavy Metals in Waste Water Sludge using GC-MS/MS and Multicollector ICP-MS. Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1494304.

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