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- Title
湿法消解/干灰化-氢化物发生-原子荧光 光谱法测定基围虾中总砷.
- Authors
林建奇; 刘海涛; 甄长伟; 王威; 蓝图; 姚梦楠
- Abstract
A method for the determination of total arsenic in the shrimps was established by using the method of wet digestion/dry ash-hydride-atomic fluorescence spectrometry. Samples with 6 mL of nitric acid, cold dispelling 120 min, electric heating plate 160 °C to clarify, catch acid to about ImL lastly. Then adding ashing auxiliary agent magnesium nitrate, 650 °C 5 min in muffle furnace. The hydrochloric acid dissolved ash, and testing by Atomic Fluorescence Spectrometric. Optimizing instrument conditions, the standard curve is related to linear better than 0.999 between 0.0--20.0 µg/L, the detection limit of 0.025 µg/L, relative standard deviation between 2.5%--3.1%, standard addition recovery was 93.6%-103%. The method is accurate and can be used in the determination of total arsenic in shrimps.
- Subjects
ARSENIC; FLUORESCENCE; NITRIC acid; HYDROCHLORIC acid; MAGNESIUM nitrate
- Publication
Chinese Journal of Inorganic Analytical Chemistry / Zhongguo Wuji Fenxi Huaxue, 2019, Vol 9, Issue 6, p23
- ISSN
2095-1035
- Publication type
Article
- DOI
10.3969/j.issn.2095-1035.2019.06.006