云南化工2023，Vol.50Issue(12)：66-70,5.DOI:10.3969/j.issn.1004-275X.2023.12.17
不同酸介质下连续流动分析仪测定水样中六价铬的探究
Determination of Hexavalent Chromium in Water by Continuous Flow Analyzer in Different Acid Media
李亚 1李会兰 1朱吉东 1陆文灵 1谭彦飞2
作者信息
- 1. 云南省生态环境厅驻文山州生态环境监测站, 云南 文山 663000
- 2. 昆明市石林分局生态环境监测站, 云南 昆明 652200
- 折叠
摘要
Abstract
In this paper,the AA3HR continuous flow analyzer of German Seal company was used to determine hexavalent chromium in water Un-der different acid media,the influence on the determination results was studied.The results showed that the linearity,detection limit and preci-sion of the standard curve in perchloric acid,nitric acid,phosphoric acid and acetic acid and other high and weak acid media were better than the environmental standard method,but the accuracy of certified reference materials was low,and the recovery rate of sample spiking could not meet the requirements of the method;In medium to strong acid media such as sulfuric acid,hydrochloric acid,and thiophosphoric acid,the standard curve had good linearity,low detection limit,high precision and accuracy,stable recovery after addition,and all indicators could meet the requirements of environmental standard methods.It is recommended to use sulfuric acid,hydrochloric acid and thiophosphoric acid as sub-stitutes in the analysis process.关键词
六价铬/连续流动分析/酸介质Key words
hexavalent chromium/on-flow analysis/acid medium分类
化学化工引用本文复制引用
李亚,李会兰,朱吉东,陆文灵,谭彦飞..不同酸介质下连续流动分析仪测定水样中六价铬的探究[J].云南化工,2023,50(12):66-70,5.
