Citation: WANG Song, LI Ke, CUI He, WANG Jing-Tang, ZHAO Xin-Peng, MIAO Jun-Kui, LIU Xiao-Fang, ZHAO Xian-Yong, LENG Kai-Liang. Quantitative Analysis of Total and Different Species of Arsenic in Oil of Antarctic Krill (Euphausia Superba)[J]. Chinese Journal of Analytical Chemistry, ;2016, 44(5): 767-772. doi: 10.11895/j.issn.0253-3820.150942 shu

Quantitative Analysis of Total and Different Species of Arsenic in Oil of Antarctic Krill (Euphausia Superba)

1.
Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;
2.
Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI 48824 U. S. A;
3.
Shandong Entry-Exit Inspection and Quarantine Bureau, Qingdao 266002, China

Received Date: 25 November 2015
Revised Date: 4 January 2016

Arsenic is a toxic metalloid that is abundant in many marine species, including Antartic krill. Krill oil is being developed for the health-food and dietary supplement because it possesses of omega-3 fatty acids and phospholipid-derived fatty acids; however, it was limited due to its multiple arsenic species residues. Here, we presented a high performance liquid chromatography-inductively coupled plasma mass spectrometric (HPLC-ICP-MS) method for the simultaneous, sensitive, and rapid quantification of five arsenic metabolites including organic and inorganic forms, then the method was applied to the analysis of arsenic species in krill oil. The analytes were separated on a hydroxide-selective anion-exchange column with sodium carbonate (38 mmol/L) and sodium acetate (15 mmol/L) as mobile phase at a flow rate of 0.6 mL/min for 15 min. Arsenic analytes were monitored with a triple quadrupole ICP mass spectrometer. Validation revealed that the method had a linear range from 0.5 to 500 μg/L with R>0.9993. The LOD was 0.1-0.2 μg/L and LOQ was 1.5-2.6 μg/L with RSD<5%. The standard addition method displayed a recovery range from 88.9% to 106.3%. Application of the method to arsenic species analysis in krill oil indicated that krill oil was a safe food or diet supplement.
- Antartic krill oil,
- Arsenic,
- Speciation analysis,
- High performance liquid chromatography-inductively coupled plasma mass spectrometry
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1.
沈阳化工大学材料科学与工程学院沈阳 110142