光电工程, 2015, 42 (4): 88, 网络出版: 2015-09-08
流动注射分光光度法测定海水中痕量重金属
Determination of Trace Soluble Heavy Metals in Seawater Based on Flow Injection Analysis and Spectrophotometry
重金属 流动注射分析 分光光度法 多元线性回归 heavy metal flow injection analysis spectrophotometry multiple linear regression
摘要
针对水体中污染较重且含量较高的可溶态痕量重金属镉 (Cd2+)、铜(Cu2+)、锌(Zn2+)、镍(Ni2+), 提出采用流动注射分光光度法测定海水中痕量可溶性重金属。首先分析了四种重金属离子 Cd2+、Cu2+、Zn2+、Ni2+在不同波长下的吸光光谱, 然后建立了 4水平 4因素的正交校正集作为多元线性回归数据分析模型, 最后搭建了重金属离子浓度测量装置, 检测了海水中的可溶性 Cd2+、Cu2+、Zn2+、Ni2+浓度, 检测下限可达 10-9(ppb)。
Abstract
For the heavy pollution and high content of trace soluble heavy metals Cd2+、Cu2+、Zn2+、Ni2+ in waters, a determination method of trace soluble heavy metals in seawater is proposed based on flow injection analysis and spectrophotometry. Firstly, the absorption spectrums of four heavy metal ions are analyzed at different wavelengths. Then, an orthogonal correction set with 4 levels and 4 factors is established as the multiple linear regression analysis model. Finally, the measuring equipment of four heavy metal ions is set up, the concentration of soluble metals Cd2+、Cu2+、Zn2+、 Ni2+ in waters is measured, and the detection limit at 10-9 (ppb) can be achieved.
于腾飞, 张燕君, 毕卫红, 付兴虎, 付广伟, 高明明. 流动注射分光光度法测定海水中痕量重金属[J]. 光电工程, 2015, 42(4): 88. 于腾飞, 张燕君, 毕卫红, 付兴虎, 付广伟, 高明明. Determination of Trace Soluble Heavy Metals in Seawater Based on Flow Injection Analysis and Spectrophotometry[J]. Opto-Electronic Engineering, 2015, 42(4): 88.