《水质 化学需氧量的测定 重铬酸盐法》(HJ 828—2017)的实验室方法验证

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英文篇名：Method Verification in Laboratory of Water Quality-Determination of the Chemical Oxygen Demand-Dichromate Method (HJ828-2017) 作者：张笑 ; 李文明 英文作者：ZHANG Xiao;LI Wenming;Xi'an Environmental Sanitation Scientific Research Institute; 关键词：化学需氧量 ; 方法验证 ; 方法检查限 英文关键词：COD;;method verification;;method check limit 中文刊名：HNKJ 英文刊名：Henan Science and Technology 机构：西安市环境卫生科学研究所; 出版日期：2019-02-05 出版单位：河南科技 年：2019 期：No.666 语种：中文; 页：HNKJ201904055 页数：3 CN：04 ISSN：41-1081/T 分类号：150-152

摘要

化学需氧量(COD)是我国实施排放总量控制的指标之一,反映了水中受还原性物质污染的程度。本文主要对《水质化学需氧量的测定重铬酸盐法》(HJ 828—2017)的方法进行验证。结果表明,测定的检出限为4mg/L,等于方法给出的检出限;对自控样2001117(30.2±1.9mg/L)和自控样2001116(224±8mg/L)进行了六次平行样测定,相对标准偏差分别为2.6%和3.1%,均在方法要求的5%以内,符合方法要求;相对误差分别为1.2和2,符合方法要求。
        Chemical oxygen demand(COD) is one of the indicators of total emission control in our country. It reflects the degree of contamination by reducing substances in water. This paper mainly validated the method of "Determination of Chemical Oxygen Demand of Water Quality by Dichromate Method"(HJ 828—2017). The results showed that the detection limit of the method was 4 mg/L, which was equal to the detection limit given by the method. Six parallel samples of the self-control sample 2001117(30.2+1.9 mg/L) and the self-control sample 2001116(224+8 mg/L) were determined. The relative standard deviations were 2.6% and 3.1% respectively, which were within 5% of the method requirements and met the method requirements. The relative errors were 1.2 and 2 respectively, which met the method requirements.

引文

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    [2]环境保护部.水质化学需氧量的测定重铬酸盐法:HJ828—2017[S].北京:环境保护部,2017.
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