六价铬Cr（Ⅵ）对人体健康存在严重影响，是公认的致癌物质，2004年美国环保署将六价铬列为对人体危害最大的18种化学物质之一。我国新颁布的环境空气质量标准（ GB 3095—2012）中明确规定了对环境空气中六价铬的标准限值。本文比较了不同国家及地区的环境空气中的浓度水平，综述了六价铬的环境空气样品分析方法进展，分析国内外前处理方法和仪器分析的现状，剖析技术难点，并对在我国进行相关研究提出了建议，以期推动六价铬的研究工作。
Hexavalent chromiμm Cr(Ⅵ) is extremely harmful to health and considered as a carcinogen. It was listed as one of the most toxic chemical substances by US EPA in 2004. In Chinese Ambient Air Quality Standards (GB 3095—2012), the standard limit value of Cr(Ⅵ) in ambient air is also established. In this paper, we compare the ambient levels of Cr(Ⅵ) in different countries and regions, review the advances of the methods and instrumental analysis of Cr(Ⅵ) in ambient, compare current situation of pretreatment methods and instrument methods in domestic and international and analyze technical difficulties. In order to promote the related investigation, some suggestions are also given for future studies on hexavalent chromiμm in the environment air in China.
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