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- Title
原子荧光光谱法测定以磷块岩为原料 制备磷酸中的碑.
- Authors
王娅楠; 郭冬发; 李黎; 李伯平; 张良圣; 刘瑞萍
- Abstract
The content of arsenic in phosphoric acid prepared from phosphorite was determined by a hydride generation-atomic fluorescence spectrometer with water as the carrier. Phosphoric acid was produced by solving the phosphorous rock by the sulfuric acid method, then the working conditions of the instrument were optimized, and the amount of hydrochloric acid and 5% L(+)-ascorbic acid-thioureasuitable (5%) for the determination of arsenic was selected through the condition experiment. The results of atomic fluorescence spectrometry are as follows: the linear correlation coefficient K2 is 0.999 96 in the concentration range of 5一0 ng/mL; the detection limit is 0.001 9 ng/mL; relative standard deviation (KSD) is 82%; the recoveries of samples are 92. 4% 一103 %・ It shows that the method is accurate and reliable.
- Publication
Chinese Journal of Inorganic Analytical Chemistry / Zhongguo Wuji Fenxi Huaxue, 2021, Vol 11, Issue 6, p8
- ISSN
2095-1035
- Publication type
Article
- DOI
10.3969/j.issn.2095-1035.2021.06.002