磷钼蓝分光光度法测定水质中磷酸盐的方法探讨  

Discussion on Phosphorus Molybdenum Blue Spectrophotometric Method for Determination of Phosphate in Water

作　　者：邵先涛 沈鹏 马凯云 张建生 Shao Xian-tao;Shen Peng;Ma Kai-yun;Zhang Jian-sheng(Qingshan Lvshui(Suzhou)Inspection and Testing Co.,Ltd.Suzhou,Jiangsu 215000,China)

机构地区：[1]青山绿水(苏州)检验检测有限公司,江苏苏州215000

出　　处：《福建分析测试》2021年第3期49-52,共4页Fujian Analysis & Testing

摘　　要：本文探讨了磷钼蓝分光光度法测定生活饮用水及其水源水中磷酸盐准确度的主要影响因素。研究表明:磷酸盐的测定条件在反应温度为20℃、显色反应时间为10min最佳,在该条件下,标准曲线具有良好的线性关系,相关系数在0.9994~0.9999之间,加标回收率为91.5%~105.5%,相对标准偏差2.0%~3.1%。为饮用水及其水源水中磷酸盐的测定提供了借鉴。This article discusses the main factors affecting the accuracy of phosphomolybdenum blue spectrophotometric determination of phosphate in drinking water and its source water.Studies have shown that the best conditions for the determination of phosphate are at a reaction temperature of 20℃ and a color reaction time of 10 minutes.Under these conditions,the standard curve has a good linear relationship,the correlation coefficient is between 0.9995 and 0.9999,and the standard recovery rate It is 91.5%~105.5%,and the relative standard deviation is<3.1%.Provide a reference for the determination of phosphate in drinking water and its source water.

关 键 词：磷酸盐 磷钼蓝分光光度法 饮用水 

分 类 号：O657.72[理学—分析化学]