Determination of selenium in nickel-based alloys by flow injection hydride generation reaction cell inductively coupled plasma mass spectrometry

Danadurai, K. Suresh Kumar; Hsu, Yu-Lan; Jiang, Shiuh‐Jen

doi:10.1039/b202878f

Cited by 13 publications

(10 citation statements)

References 33 publications

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“…40 Ca 40 CaHH + ). In addition Zn ( 66 Zn 16 O + ) causes a slightly enhanced signal on mass 82. This shows that even sophisticated interference equations 12 are not adequate for correction on As measurements.…”

Section: Interference Solutionsmentioning

confidence: 99%

“…15 Different types of collision-reaction cells exist, which remove interfering ions via collisions or chemical reactions by using gases such as H 2 , He, CO, CH 4 Ar, O 2 or a combination of them. 7,8,13,[16][17][18][19] In this approach often 78 Se is monitored. 8 The effect of organic solvents on the analyte signal in ICP-MS has been evaluated by a number of authors.…”

Section: Introductionmentioning

confidence: 99%

“…This enhancement of signal is higher for Se and As than for most other elements. 16 Additionally, small amounts of alcohol reduce the formation of polyatomic ions attributed to the competitive formation of carbides. [20][21][22] The purpose of the present article is to evaluate the occurrence of spectral interferences on Se determination in volcanic soil digestions using an ICP-MS equipped with an octopole reaction system (ORS).…”

Section: Introductionmentioning

confidence: 99%

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Selenium determination in volcanic soils by ICP-QMS: influence of reaction cell pressurization and methanol addition on the occurrence of spectral interferences

Floor

Iglesías

Román-Ross

2009

J. Anal. At. Spectrom.

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Accurate determination of selenium in soils is a critical issue in geochemistry, because Se has a narrow range between dietary deficiency and toxic concentrations. However, its determination is difficult as Se commonly occurs at low levels. Se measurements by ICP-MS are hampered by Ar-based polyatomic ions overlapping Se isotopes. Moreover, in complex matrixes such as geological materials, additional spectral interferences might occur. In this work spectral inferences in volcanic soil digestions have been assessed using both synthetic solutions and real samples under four different measurement conditions that include the addition of an organic solvent (methanol) and the use of a pressurized octopole system. The results indicate that the traditional approach using 82 Se without collision-reaction cell significantly overestimates the Se concentration. With the use of a hydrogen pressurized collision-reaction cell an interference-free 78 Se signal could be obtained. Methanol was found to decrease the effect of interferences and additionally improves the count statistics due to higher sensitivity. Correspondingly, the best results were obtained using 78 Se with a hydrogen pressurized collision-reaction cell and a 2% methanol matrix.

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Section: Interference Solutionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Selenium determination in volcanic soils by ICP-QMS: influence of reaction cell pressurization and methanol addition on the occurrence of spectral interferences

Floor

Iglesías

Román-Ross

2009

J. Anal. At. Spectrom.

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“…In terms of selenium quantification, CH 4 is more effective in eliminating the interference than NH 3 , H 2 and O 2 as described in a previous work. 9 A standard selenium solution of 10 ng mL À1 was used here for optimizing the DRC conditions. The main optimized parameters of the DRC were the flow rate of CH 4 and the value of the rejection parameter q (Rpq).…”

Section: Optimization Of Drc Operating Conditionsmentioning

confidence: 99%

“…To eliminate this spectroscopic interference, methane was employed in the dynamic reaction cell (DRC) for realizing accurate quantification of selenium. [8][9][10] In the articles published about analysis of selenoproteins in human plasma and/or serum, size exclusion chromatography (SEC), affinity chromatography (AC) and anion exchange chromatography (AEC) are frequently used. [11][12][13][14][15][16] However, SEC cannot provide precise quantitative results for selenoproteins because its poor resolving power results in overlap between high abundance selenium-containing proteins (SeAlb) and selenoproteins.…”

Section: Introductionmentioning

confidence: 99%

Quantification of selenium-tagged proteins in human plasma using species-unspecific isotope dilution ICP-DRC-qMS coupled on-line with anion exchange chromatography

Yang

Wang

2008

J. Anal. At. Spectrom.

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Inductively coupled plasma dynamic reaction cell-quadrupole mass spectrometry (ICP-DRC-qMS) coupled on-line with anion exchange chromatography (AEC) has been developed for the quantification of selenium-tagged proteins in human plasma. Methane was employed as a reaction gas in the dynamic reaction cell to achieve the determination of Se-80 free of spectroscopic interference from Ar-40(2)+ and (BrH+)-Br-79. Five selenium species including selenoprotein P (SelP), glutathione peroxidase (GPx), selenoalbumin (SeAlb), and two unknown selenospecies (U1 and U2) in a pooled plasma sample from five healthy people were separated using AEC, and the distribution of selenium in SelP, GPx, SeAlb, U1 and U2 (about 45.5%, 19.1%, 15.1%, 2.9% and 8.1%) was determined by ICP-DRC-qMS using species-unspecific isotope dilution (Se-80/Se-77). Based on the detection limit (DL) of selenium (0.54 ng mL(-1)), we estimated that the DLs for SelP and GPx were 0.59 pmol mL(-1) and 1.7 pmol mL(-1), respectively. Through the stoichiometry of the selenium atom in the selenium-tagged proteins, SelP (2.7 +/- 0.1 mu g mL(-1)) and GPx (5.4 +/- 0.2 mu g mL(-1)) were successfully quantified.National Natural Science Foundation of China [20535020, 20775062]; National 863 project [2006AA06Z404]; National Basic Research Program of China [2003CD415001

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Current Awareness

2002

J. Mass Spectrom.

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In order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of mass spectrometry. Each bibliography is divided into 11 sections: 1 Books, Reviews & Symposia; 2 Instrumental Techniques & Methods; 3 Gas Phase Ion Chemistry; 4 Biology/Biochemistry: Amino Acids, Peptides & Proteins; Carbohydrates; Lipids; Nucleic Acids; 5 Pharmacology/Toxicology; 6 Natural Products; 7 Analysis of Organic Compounds; 8 Analysis of Inorganics/Organometallics; 9 Surface Analysis; 10 Environmental Analysis; 11 Elemental Analysis. Within each section, articles are listed in alphabetical order with respect to author (5 Weeks journals ‐ Search completed at 5th. June. 2002)

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Determination of selenium in nickel-based alloys by flow injection hydride generation reaction cell inductively coupled plasma mass spectrometry

Cited by 13 publications

References 33 publications

Selenium determination in volcanic soils by ICP-QMS: influence of reaction cell pressurization and methanol addition on the occurrence of spectral interferences

Selenium determination in volcanic soils by ICP-QMS: influence of reaction cell pressurization and methanol addition on the occurrence of spectral interferences

Quantification of selenium-tagged proteins in human plasma using species-unspecific isotope dilution ICP-DRC-qMS coupled on-line with anion exchange chromatography

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