Determination of trace mercury(II) in wastewater using on-line flow injection spectrophotometry coupled with supported liquid membrane enrichment

被引：10
|
作者：
Xiao, Xin-feng [1 ]
Yang, Nu [1 ]
Wang, Zhao-li [2 ]
Huang, Yong-qing [1 ]
机构：
[1] Shandong Univ Sci & Technol, Coll Chem & Environm Engn, Qingdao 266510, Peoples R China
[2] Chengdu Acad Environm Protect, Chengdu 610072, Peoples R China
来源：
ANALYTICAL METHODS | 2016年 / 8卷 / 03期
基金：
美国国家科学基金会;
关键词：
ATOMIC-ABSORPTION-SPECTROMETRY; ENVIRONMENTAL-SAMPLES; CD(II); HG(II);
D O I：
10.1039/c5ay02725j
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An on-line flow-injection spectrophotometric method coupled with supported liquid membrane enrichment was developed to determine trace Hg(II) in water. Tributyl phosphate (TBP) dissolved in kerosene was used as the flow carrier in a supported liquid membrane extraction system. The effect of various parameters on Hg(II) measurement was investigated. The optimum conditions were determined as 20% TBP in the membrane phase, 0.02 mol L-1 NaOH in the accepting phase, 0.8 mol L-1 HCl in the feeding phase, 0.2 mu m PTFE membrane in the enrichment process, and 20 min enrichment time. Under these optimum conditions, the linear range for Hg(II) measurement was from 0.2 to 30 mu g L-1 with a detection limit of 0.06 mu g L-1. Additionally, we demonstrated that this system can be used to determine trace Hg(II) in wastewater.
引用
收藏
页码：582 / 586
页数：5
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