贵州省水质分析实验室质控考核结果分析

郭华; 林野; 周贻兵; 黄培林; 张卫国

贵州省水质分析实验室质控考核结果分析

Analysis on Results of Quality Control for Water Analysis in Guizhou

摘要

摘要:
目的确保饮用水监测结果的准确和可靠, 促进各水质分析实验室加强实验室质量控制。
方法组织全省73家水质分析实验室对下发的饮用水质控考核样品进行铁、锰、氟化物、硫酸盐和硝酸盐氮的含量测定, 运用国际上通用的"Z"比分数"统计法对结果进行分析和评价。
结果 69家实验室按时提交检测结果, 2种不同质量浓度水平质控样品铁的检测结果满意率分别为91.2%和97.1%;锰的检测结果满意率为分别91.2%和91.9%;氟化物、硫酸盐和硝酸盐氮检测结果满意率分别为90.9%和91.7%、90.9%和94.4%、90.9%和88.9%;5项指标的检测结果均满意的实验室占73.9%。
结论目前全省水质分析实验室总体检测能力仍需进一步提高。

Abstract:
Objectives To ensure the accuracy and reliability of monitoring results of water analysis and to strengthen the quality control in laboratories.
Methods Two quality control water samples containing different content of iron, manganese, fluoride, sulfate and nitrate were delivered to 73 laboratories of Guizhou. The results were statistically analyzed by internationally accepted "Z-score".
Results The tested result of 69 laboratories was submitted on time, the qualified rates for two iron concentrations were 91.2% and 97.1%, those for manganese were 91.2% and 91.9%, and those for fluoride, sulfate and nitrate nitrogen were 90.9% and 91.7%, 90.9% and 94.4% and 90.9% and 88.9% respectively. The satisfaction rate for five detection items in all laboratories was 73.9%.
Conclusions The general capability of analysis on drinking water needs to be further improved in Guizhou.

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