地下水中12项半挥发性有机污染物测定的质量控制  

Quality Control for the Determination of 12 Semi-volatile Organic Pollutants in Groundwater Samples

作　　者：李松[1] 饶竹[1] 

机构地区：[1]国家地质实验测试中心,北京100037

出　　处：《岩矿测试》2009年第2期157-160,共4页Rock and Mineral Analysis

基　　金：国土资源地质大调查项目资助(200120190107-05);地质调查工作项目--地下水有机污染物分析方法研究项目资助(121201063460);国家地质实验测试中心基本科研业务项目资助(2008CSJ02)

摘　　要：以正己烷液-液萃取、气相色谱(电子捕获检测器)和高效液相色谱(紫外、荧光检测器)检测地下水调查样品中12项半挥发性有机污染物组分的分析为例,从水样的储存、气相色谱进样口活性评定、试剂空白检查、萃取过程中乳化现象的消除等方面总结出一些经验。参照美国EPA方法中QA/QC的经验,建立了全国地下水调查样品中半挥发性有机污染物分析过程的质量控制流程程序,通过引用质量控制图直观评价批量样品分析的满意度,实现了分析流程的受控状态。Liquid-liquid Extraction （LLE） with n-hexane was developed to extract 12 kinds of semi-volatile organic compounds in groundwater samples. Gas chromatography equipped with electron captured detector （ECD） and high performance liquid chromatography equipped with ultraviolet detector （UVD） and fluorescence detector （FLD） were used to analyze the target compounds. Some factors affecting the determinations including the preservation of the water samples, the activity evaluation of the gas chromatography injection, inspection of reagent blanks, elimination of emulsification in water sample extraction, etc. were discussed in details. Reference to the QA/QC protocols from EPA, a quality control procedure for semi-volatile organic compound analysis in groundwater samples was proposed. By using quality control charts for evaluating batch analytical results, it ensures that the analytical procedure is under the quality control.

关 键 词：半挥发性有机污染物 地下水 质量控制 经验交流 

分 类 号：O213.1[理学—概率论与数理统计] O656.31[理学—数学]