安徽农业科学2012，Vol.40Issue(2)：934-936,3.
顺序注射微量注样在线稀释分光光度法测定环境水样中的正磷酸盐
Determination of Phosphate in Environmental Samples by Sequential Injection Micro -sampling On -line Dilution Spectrophotometry
刘永强 1陶冠红 2王佳子 3马泓冰2
作者信息
- 1. 潍坊出入境检验检疫局,山东潍坊261041
- 2. 苏州大学材料与化学化工学部,江苏苏州215123
- 折叠
摘要
Abstract
[Objective] The aim was to study the feasibility of using sequential injection micro - sampling on - line dilution spectrophotometry determining phosphate in environmental samples. [ Method] A sequence injection analysis method for the direct determination of phosphate in environmental samples with on - line intelligent dilution and photometric detection was described. Phosphate was performed by the molybdenum blue method with detection at 720 nm. [Result] At the optimized condition,the calibration graph is a linear when PO43- concentration was in range of 1-6 and 6-50 mg/L. The relative standard deviation is 1.4 % for the determination of 2 mg/L PO4 3- (n = 11) and 1.6% for the determination of 20 mg/L PO4 3- (n = 11). [ Conclusion ] It is characterized by high automation and wide analytical working range, which meets the requirements of automatic analysis and on - line monitoring.关键词
顺序注射分析/分光光度法/微量注样/在线稀释/正磷酸盐Key words
Sequential injection analysis/ Spectrophotometry/ Micro - sample/ On - line dilution/ Phosphate分类
资源环境引用本文复制引用
刘永强,陶冠红,王佳子,马泓冰..顺序注射微量注样在线稀释分光光度法测定环境水样中的正磷酸盐[J].安徽农业科学,2012,40(2):934-936,3.
