Determination of total arsenic in biological samples by arsine generation and atomic absorption spectrometry

Uthus, Eric O.; Collings, Michael E.; Cornatzer, W. E.; Nielsen, Forrest H.

doi:10.1021/ac00237a017

Cited by 24 publications

(4 citation statements)

References 25 publications

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“…One estimate of the relative 0 Is and Si 2p binding energy shifts between silicon oxide and hydroxide on thin films is 1.2 eV and 0.5 eV, respectively (3). Such shifts are considerably smaller than those observed for several other metal oxide surfaces (3,(9)(10)(11).…”

contrasting

confidence: 59%

“…The majority of workers utilize direct introduction of the hydride into an Ar-H, flame (e.g., ref 3 and 4) or hydride transfer to resistance-or flame-heated silica tubes (5-3, quartz cuvette burners ( 8 ) , or preheated electrothermal atomizers (9)(10)(11)(12). Improved detection limits may be realized by collection and concentration of the hydride prior to its introduction into the atomization cell.…”

Section: Literature Citedmentioning

confidence: 99%

See 1 more Smart Citation

Hydride generation-atomic absorption determination of antimony in seawater with in situ concentration in a graphite furnace

Sturgeon¹,

Willie²,

Berman³

1985

Anal. Chem.

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contrasting

confidence: 59%

Section: Literature Citedmentioning

confidence: 99%

Hydride generation-atomic absorption determination of antimony in seawater with in situ concentration in a graphite furnace

Sturgeon¹,

Willie²,

Berman³

1985

Anal. Chem.

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“…Liquid N 2 could be an alternative coolant for the CT trap. 19 However, the low boiling point (À195.8 C) of liquid N 2 might trap O 2 (boiling point À182.95 C) in samples and consequently inuence the analysis. In this sense, the use of liquid N 2 as the coolant for CT was demonstrated to be suitable for the analysis of volatile As spiked in N 2 but not feasible for the analysis of volatile As spiked in synthetic air (Fig.…”

Section: Cryotrapping (Ct)mentioning

confidence: 99%

An automatic cryotrapping and cryofocussing system for parallel ICP-MS and EI-MS detection of volatile arsenic compounds in gaseous samples

Ilgen

Huang

2013

J. Anal. At. Spectrom.

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A new GC-ICP-MS/EI-MS coupling is presented, which enables the quantification and identification of volatile metal and metalloid compounds in gaseous samples simultaneously. The proposed assembly is fully controlled using Windows compatible software to ensure precise and reproducible analytical results. The cryotrapping (CT) system is critical for sensitive and precise detection of volatile arsenic compounds. Thus, the CT trap was newly designed and factors affecting CT efficiency were comprehensively optimized, especially the trapping materials, trapping flow rates, heating rates and trapping temperatures. Silanized glass beads (2 mm) as the packing material in the CT trap greatly increased the trapping efficiency. A relatively high trapping flow rate (200 mL min À1 ) gave the best recoveries. An adequate heating rate (e.g. 11.3 watt Â 360 s) was required to desorb arsenic and to prevent thermal decomposition. Liquid argon was demonstrated to be the most appropriate coolant, since this prevented freezing of O 2 and blockage of the trap. In comparison, cryofocusing (CF) was less dependent on aforementioned parameters. Thick film chromatography allowed baseline separation of different arsine compounds at room temperature and eliminated the interference from xenon. Analysis of volatile arsenic with more complicated structures such as triethylarsine using a CT-CF technique is suitable for qualitative but not for quantitative purposes due to lower stability of these compounds. The resulting detection limits and RSD of arsine and methyl arsines with ICP-MS detection are 0.12-0.41 pg arsenic, and 0.76-1.29%, which is remarkably lower than those in previous studies.

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“…Elaborate elution sequences or individual separations are required for some species (21,22). Atomic absorption spectroscopy has also been combined with hydride generation for analysis of water samples and biological samples (23).…”

Section: Arsenicmentioning

confidence: 99%

Electrochemical methods for speciation of inorganic arsenic

D'Arcy¹

2000

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studies challenging, enriching, and enjoyable. I would like to especially thank Dr. David K. Roe. His guidance, patience, and knowledge were the stimulus for this work. I would like to thank Dr. Bruce Brown and his wife Barbara for their encouragement and friendship. Dr. Brown and I endured many long miles and tall tales. The camaraderie I shared with my fellow graduate students was supportive. Mario Aparicio was always ready to answer my questions, give advice or challenge me to run that last mile.

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Determination of total arsenic in biological samples by arsine generation and atomic absorption spectrometry

Cited by 24 publications

References 25 publications

Hydride generation-atomic absorption determination of antimony in seawater with in situ concentration in a graphite furnace

Hydride generation-atomic absorption determination of antimony in seawater with in situ concentration in a graphite furnace

An automatic cryotrapping and cryofocussing system for parallel ICP-MS and EI-MS detection of volatile arsenic compounds in gaseous samples

Electrochemical methods for speciation of inorganic arsenic

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