地下水有机污染物质量监控样品检测数据质量评价

Quality assessment of testing data for groundwater organic contaminants in quality monitoring samples

选取我国5家地下水污染调查检测实验室前后两年质量监控样品检测数据,按检测组分、检测样品类型和实验室检测技术能力3方面进行质量监控评价。两年内5家实验室的288件检测样品,累计5454个检测组分中各检测组分合格率为90.4%~100%,挥发性有机污染物(VOC)和半挥发性有机污染物(SVOC)样品的合格率为97.4%~99.4%,均满足地下水污染调查评价样品分析与质量控制技术要求;5家实验室VOC和SVOC样品检测的整体合格率为88.4%~100%。总体上我国地下水污染调查检测实验室的有机污染物测试能力有很大提高,检测数据准确可靠。

Comparing the results of blind reference materials with those of simultaneously determined daily groundwater samples can monitor and evaluate the quality of test data for laboratories. In this paper,test data of the first year and the second year for five laboratories that undertake tasks of groundwater pollution investigation were selected. The evaluation of quality monitoring is proposed according to testing components,testing samples and testing capability of laboratories. Results showed that qualified rates of 5454 testing components for 288 testing samples of 5 laboratories in two years range from 90. 4% to 100%,whereas qualified rates of testing samples for VOCs and SVOCs ranged from 97. 4% to 99. 4%,which meet the requirements of DD2014-15. The whole qualified rates of VOCs and SVOCs for 5 laboratories ranged from 88. 4% to 100%. Capability of testing organic contaminants for laboratories that undertake tasks of groundwater pollution investigation was greatly improved with accurate and reliable test data.