Application of HPLC-ICP-MS and HPLC-ESI-MS procedures for arsenic speciation in seaweeds

Journal of Agricultural and Food Chemistry
Yu-Jhe Hsieh, Shiuh-Jen Jiang

Abstract

Speciation of arsenic in seaweeds was carried out using ion chromatography (IC) for separation and inductively coupled mass spectrometry (ICP-MS) for detection. The arsenic species studied were arsenite [As(III)], arsenate [As(V)], monomethylarsonic acid (MMA), dimethylarsinic acid (DMA), arsenobetaine (AsB), and arsenocholine (AsC). Chromatographic separation of all the species was achieved in <9 min in gradient elution mode using (NH(4))(2)CO(3) and methanol at pH 8.5. The outlet of the IC column was directly connected to the nebulizer of ICP-MS for the determination of arsenic. The speciation of arsenic has been carried out in several seaweed samples. A microwave-assisted extraction method was used for the extraction of arsenic species from seaweed samples. With a mixture of mobile phase A and methanol as extractant, the extraction efficiency was >84%, and the recoveries from spiked samples were in the range of 90-106%. The unknown compounds detected in different seaweeds were identified by coupling IC directly with electrospray ionization-mass spectrometry (ESI-MS). Two arsenosugars and tetramethylarsonium ion (TETRA) were identified in different seaweeds. A fat-soluble arsenolipid compound was identified in the extract of ...Continue Reading

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Citations

Jun 24, 2017·Critical Reviews in Analytical Chemistry·Heena RekhiAshok Kumar Malik
Feb 11, 2020·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Tomohiro NarukawaKazumi Inagaki
Nov 2, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Lian-Xian GuoJiang-Hai Wang
Jul 2, 2017·Analytical and Bioanalytical Chemistry·Mingwei YangYong Cai
Feb 23, 2020·Biological Trace Element Research·Şerife TokalıoğluPaul Worsfold
Oct 4, 2019·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Julieta R Camurati, Vanesa N Salomone
Jan 31, 2020·Journal of Agricultural and Food Chemistry·Caleb LuvongaSang Bok Lee

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