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A Comparison of Sonication and Microwave-assisted Extracion Method for Speciation of Arsenic in Fish Tissue, DORM-2
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2003, v.16 no.2, pp.134-142
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(2003). A Comparison of Sonication and Microwave-assisted Extracion Method for Speciation of Arsenic in Fish Tissue, DORM-2. Analytical Science and Technology, 16(2), 134-142.
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Abstract
Comparison of a microwave-assisted extraction with sonication extraction was performed for arsenic speciation in fish tissue with chromatographic separation and inductively coupled plasma mass spectrometry detection. The detection limits of arsenicals with ultrasonic nebulizerand cross-flow nebulizer were shown to be similar. The arsenicals investigated were arsenobetaine (AsB), arsenite [As(III)], dimethylarsine acid (DMA), monomethylarsonic acid (MMA), arsenate [As(v)], and phenylarsonic acid (PAA). Quantitative extraction of arsenicals from dogfish muscle, DORM-2, standard reference material of NRCC (National Research Council of Canada) was achieved using 50% (v/v) methanol-water in both extraction methods. Extraction efficiency of arsenobetaine in both methods is greater than 82% with RSDs on replicates of less than 5%. The concentrations of AsB determined in extract of microwave assisted extraction and sonication methods were <TEX>$14.18{\pm}0.42mg\;kg^{-1}$</TEX> and <TEX>$13.54 {\pm}0.84mg\;kg^{-1}$</TEX>, respectively. And the concentrations of DMA were <TEX>$0.45{\pm}0.06mg\;kg^{-1}$</TEX> and <TEX>$0.44{\pm}0.06mg\;kg^{-1}$</TEX>, respectively.
- keywords
- Arsenic, speciation, DORM-2, HPLC, ICP-MS
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