火焰原子吸收分光光度法测定废水中总铬前处理方法比较

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	作者：刘畅 关键词：微波消解 ; 电热板消解 ; 火焰原子吸收分光光度法 ; 铬 英文关键词：microwave digestion;;electrothermal plate digestion;;flame atomic absorption spectrophotometry;;chromium 中文刊名：LNCX 英文刊名：Environmental Protection and Circular Economy 机构：辽宁省环境监测实验中心; 出版日期：2019-03-15 出版单位：环境保护与循环经济 年：2019 期：v.39;No.283 语种：中文; 页：LNCX201903016 页数：3 CN：03 ISSN：21-1556/X 分类号：67-69

摘要

分别采用《水质金属总量的消解硝酸消解法》(HJ 677—2013)和《水质铬的测定火焰原子吸收分光光度法》(HJ757—2015)中的前处理方法对废水样品进行前处理,采用火焰原子吸收法测定样品中总铬的含量。结果表明,采用2种国标方法前处理后,测定结果存在显著差异,建议在采用原子吸收分光光度法测定同一样品中多种金属元素时,若采用HJ 677—2013进行样品前处理,需经过显著性差异检验后方可使用。
        The pretreatment methods of "Water quality-digestion of total metals-Nitric acid digestion method(HJ677-2013) " and the "Water quality-determination of chromium-flame atomic absorption spectrophotometry(HJ757-2015)" were used to pre-treat the wastewater samples respectively and the chromium-flame atomic absorption spectrophotometry was applied to determinate the content of total chromium. The results showed that there was significant difference between the two national standard methods. It was suggested that when atomic absorption spectrometry was used to determine multiple metal elements in the same sample and HJ 677-2013 method was used to pre-treat sample,it's necessary to do significant difference test before using.

引文

[1]环境保护部. HJ 677—2013水质金属总量的消解硝酸消解法[S]. 2013.
    [2]环境保护部. HJ 678—2013水质金属总量的消解微波消解法[S]. 2013.
    [3]环境保护部. HJ 757—2015水质铬的测定火焰原子吸收分光光度法[S]. 2015.