分析与监测

纯水细菌测定的抽样方案分析

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  • 广州半导体材料研究所, 广东 广州 510610
莫庆时(1945- ),1967年毕业于华南理工大学,高级工程师.电话:020-87222754.

收稿日期: 2003-11-06

  网络出版日期: 2010-10-01

Analysis of sampling plans of the determination of the bacterial content in pure water

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  • Guangzhou Semiconductor Material Research Institute, Guangzhou 510610, China

Received date: 2003-11-06

  Online published: 2010-10-01

摘要

以泊松分布分析了在要求细菌数少于1mL-1的纯水细菌测定中,选用采样量1mL,合格判定数为0的抽样方案,其错判概率和漏判概率都较高。提出了将细菌数≥1mL-1的纯水误判为合格的概率不超过5%的各种抽样方案,并对采样量及合格判定界限选择作了讨论。

本文引用格式

莫庆时 . 纯水细菌测定的抽样方案分析[J]. 工业水处理, 2004 , 24(7) : 42 -44 . DOI: 10.11894/1005-829x.2004.24(7).42

Abstract

It is analyzed that the sampling method, by which the result of bacterial test is accepted when the defect number equals zero in 1 mL water sample in which the number of bacteria is less than 1 mL-1, through Poisson distribution.And it is proved that the probability of the error determination of it is higher.The multifarious sampling methods are put forward, which can decrease the probability of the error determination of inspect result of pure water containing bacterial number≥1 mL-1 to less than 5%.The selections of samples and principle of judge are also discussed.

参考文献

[1]国家环保局<水和废水监测分析方法>编委会.水和废水监测分析方法[M].第3版.北京:中国环境科学出版社,1997.500-502
[2]盛骤,等.概率论与数理统计[M].北京:高等教育出版社,1995.115-118
[3]张玉柱.质量监督抽样检验[M].北京:中国标准出版社,2001.56-81

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