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为了解环境监测系统地表水中挥发性有机物(VOCs)的测定能力,提高结果的准确性和可比性,于2011年对全国29个省(自治区、直辖市)级和86个环保重点城市的市级环境监测站共115个实验室开展比对研究。22种VOCs结果全满意的单位有53个,占46.1%。18种VOCs比对结果的稳健变异系数小于10%。乙苯的结果满意率最高,为86.1%。大部分实验室的检测能力处于受控状态。
In order to understand the capability of the environmental monitoring system to measure the volatile organic compounds (VOCs) in surface water and improve the accuracy and comparability of the results, the municipal environment of 29 provinces (autonomous regions and municipalities) and 86 key environmental cities in China A total of 115 laboratories in the monitoring station conducted a comparative study. Fifty-two units were satisfied with the results of 22 VOCs, accounting for 46.1% of the total. The robust coefficient of variation for the 18 VOCs was less than 10%. The highest satisfaction rate of ethylbenzene was 86.1%. Most laboratories have a controlled test capability.