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１引言铬（Ⅵ）、苯酚和４－硝基酚是我国环境优先监测的工业污染物，其测定方法一直是环境分析中研究的重要课题。十二烷基苯磺酸钠（ＳＤＢＳ）是我国使用量最大的洗涤剂，它对环境造成的污染不容忽视。这４种物质有许多检测方法，但大多是用不同方法分别测定。本文建立了以?
1 Introduction Chromium (Ⅵ), phenol and 4-nitrophenol are the industrial pollutants that are monitored by the environment in China. The determination of chromium (Ⅵ), its determination method has been an important issue in environmental analysis. Sodium dodecyl benzene sulfonate (SDBS) is the most used detergent in China. Its environmental pollution can not be ignored. There are many detection methods for these 4 substances, but most of them are determined by different methods. This article established to?