Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam.
Bull Environ Contam Toxicol. 2011 Apr;86(4):415-8. doi: 10.1007/s00128-011-0233-z. Epub 2011 Mar 2.
A coupled high performance liquid chromatography-hydride generation-atomic absorption spectroscopy system was used to determine the speciation of arsenic in samples from the Nha Trang Harbor, Vietnam. Concentrations of arsenic in seawater, pore water, suspended solid, and sediment were 4.12-9.81 μg/L, 13.10-24.32 μg/L, 1.87-6.42 μg/g, and 3.37-9.06 μg/g, respectively. Extraction using H(3)PO(4) + NH(2)OH·HCl and ultrasonic digestion was optimized to yield a 76-85% of total arsenic. Arsenic (III) was the most abundant species in suspended solids and sediments whereas arsenic (V) represented for 30-50% of arsenic (III) concentration. Monomethylarsonic acid and dimethylarsinic acid species were undetectable.
采用高效液相色谱-氢化物发生-原子吸收光谱联用系统，对越南芽庄港水样中的砷形态进行了分析。海水中、间隙水中、悬浮固体和沉积物中砷的浓度分别为 4.12-9.81μg/L、13.10-24.32μg/L、1.87-6.42μg/g 和 3.37-9.06μg/g。采用 H3PO4+NH2OH·HCl 提取和超声消解对总砷进行了优化，提取率为 76-85%。在悬浮固体和沉积物中，砷（III）是最丰富的形态，而砷（V）占砷（III）浓度的 30-50%。一甲基砷酸和二甲基砷酸未检出。
