Speciation of arsenic compounds by ion chromatography with inductively coupled plasma mass spectrometry detection utilizing hydride generation with a membrane separator

Magnuson, Matthew L.; Creed, John T.; Brockhoff, Carol A.

doi:10.1039/ja9961100893

Cited by 63 publications

(43 citation statements)

References 16 publications

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“…2 For the determination of arsenic compounds an efficient separation step followed by an adequate detection step is necessary. These conditions are met by liquid chromatography coupled to detection systems such as hydride generation-atomic absorption spectrometry (HG-AAS), 10,11 hydride generation-inductively coupled plasma-mass spectrometry (HG-ICP-MS), 12,13 inductively coupled plasma-atomic emission spectrometry (ICP-AES), 14 and inductively coupled plasma-mass spectrometry (ICP-MS). 15,16 The hydride generation technique provides excellent detection limits for arsenic compounds that are reducible to volatile hydrides, but cannot detect arsenobetaine, arsenocholine and the tetramethylarsonium cation without prior chemical conversion.…”

Section: Introductionmentioning

confidence: 99%

Determination of arsenic compounds in marine mammals with high-performance liquid chromatography and an inductively coupled plasma mass spectrometer as element-specific detector

Goessler

Rudorfer

Mackey

et al. 1998

Appl. Organometal. Chem.

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Total arsenic concentrations and the concentrations of individual arsenic compounds were determined in liver samples of pinnipeds [nine ringed seals (Phoca hispida), one bearded seal (Erginathus barbatus)] and cetaceans [two pilot whales (Globicephalus melas), one beluga whale (Deliphinapterus leucus)]. Total arsenic concentrations ranged from 0.167 to 2.40 mg As kg−1 wet mass. The arsenic compounds extracted from the liver samples with a methanol/water mixture (9:1, v/v) were identified and quantified by anion‐ and cation‐exchange chromatography. An ICP–MS equipped with a hydraulic high‐pressure nebulizer served as the arsenic‐specific detector. Arsenobetaine (0.052–1.67 mg As kg−1 wet mass) was the predominant arsenic compound in all the liver samples. Arsenocholine was present in all livers (0.005–0.044 mg As kg−1 wet mass). The tetramethylarsonium cation was detected in all pinnipeds (<0.009 to 0.043 mg As kg−1) but not in any of the cetaceans. The concentration of dimethylarsinic acid ranged from < 0.001 to 0.109 mg As kg−1 wet mass. Most of the concentrations for methylarsonic acid (<0.001 to 0.025 mg As kg−1 wet mass) were below the detection limit. Arsenous acid and arsenic acid concentrations were below the detection limit of the method (0.001 mg As kg−1). An unknown arsenic compound was present in all liver samples at concentrations from 0.002–0.027 mg As kg−1. © 1998 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Determination of arsenic compounds in marine mammals with high-performance liquid chromatography and an inductively coupled plasma mass spectrometer as element-specific detector

Goessler

Rudorfer

Mackey

et al. 1998

Appl. Organometal. Chem.

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“…2 Some analytical methods have been used for trace determination of arsenic such as: Colorimetry, 3,4 Atomic Absorption Spectrometry, 4,5 hydride generation system combined with Atomic Absorption Spectrometry, 6 inductively coupled plasma mass spectrometry. 7,8 and Atomic Fluorescence Spectrometry. 9 Recently, electrothermal atomic absorption spectrometry has been extremely used as a powerful technique for determination of arsenic in various samples.…”

Section: Introductionmentioning

confidence: 99%

Direct Determination of Arsenic in Beet Sugar Molasses Using Nickel as Chemical Modifier by Electrothermal Atomic Absorption Spectrommetry

Pourhossein

Shahlaei

2012

J Chinese Chemical Soc

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A simple electrothermal atomic absorption spectrometric (ETAAS) method is described for direct determination of arsenic in sugar beet molasses samples. Pyrolytic graphite tubes were used as atomizers. The compression between modifiers such as nickel nitrate, palladium nitrate and the mixture of palladium and magnesium nitrate were performed and nickel nitrate selected as the best chemical modifier. The effects of pyrolysis and atomization temperature were also studied and the pyrolysis temperature of 900°C and atomization temperature of 2300°C have been chosen for temperature program. The detection limit of the method was 1 ng/mL As in sugar beet molasses samples. The relative standard deviation for ten determination of a spiked sample with concentration of 50 ng/mL As was 2.4%. The accuracy of the method was confirmed by the analysis of spiked samples. The linear rang of calibration is in the range of 1-100 ng/mL of arsenic.

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“…In addition, it is very difficult for the generated hydrides to separate from solvents and volatile acids that are also source of interferences. To overcome these problems, cold-trap [9] and graphite furnace methods [10] were used to capture metal hydrides; all kinds of effective gas-liquid separators [11,12,13] were designed to obtain ideal analysis performance for this method. The interferents existing in the matrix were masked or removed by on-line redox [6,14].…”

Section: Introductionmentioning

confidence: 99%

Determination of trace bismuth by flow injection-hydride generation collection-atomic absorption spectrometry

Chen

Zhang

2002

Analytical and Bioanalytical Chemistry

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Bismuth hydride gas was collected on-line and determined via a new flow injection-hydride generation collection-flame atomic absorption spectrometry system. The performance of the gas-liquid separator, hydride gas collection time, acidity of the sample solution, NaBH(4) concentration, and the effects of concomitant interferents were investigated to optimize the conditions of this new method. Interferences from concomitant elements were investigated, and recoveries of 94.7-105.3% for 10 ng mL(-1) Bi were obtained after the addition of 0.2% ascorbic acid-thiourea masking reagents. The sensitivity of this new method was one order of magnitude higher than the continuous flow-hydride generation-flame atomic absorption method with a detection limit of 0.25 ng mL(-1) and a precision of 2.3%. The method was evaluated by determining trace bismuth in standard biological reference material human hair GBW07601, and the results were consistent with the certified value. The proposed method was then employed to determine trace bismuth in ten colored gelatin samples; recoveries of 94.2-105.8% were obtained.

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Speciation of arsenic compounds by ion chromatography with inductively coupled plasma mass spectrometry detection utilizing hydride generation with a membrane separator

Cited by 63 publications

References 16 publications

Determination of arsenic compounds in marine mammals with high-performance liquid chromatography and an inductively coupled plasma mass spectrometer as element-specific detector

Determination of arsenic compounds in marine mammals with high-performance liquid chromatography and an inductively coupled plasma mass spectrometer as element-specific detector

Direct Determination of Arsenic in Beet Sugar Molasses Using Nickel as Chemical Modifier by Electrothermal Atomic Absorption Spectrommetry

Determination of trace bismuth by flow injection-hydride generation collection-atomic absorption spectrometry

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