| 吴安冉.水泥中水溶性铬（Ⅵ）的限量及测定方法
（GB 31893—2015）第1号修改单解读[J].水泥工程,2022,35(4):53-56 |
| 水泥中水溶性铬（Ⅵ）的限量及测定方法
（GB 31893—2015）第1号修改单解读 |
| Interpretation of Amendment No. 1 for Limits and Determination Methods of Water-soluble Chromium (VI) in Cement (GB 31893-2015) |
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| DOI： |
| 中文关键词: 分光光度法 第1号修改单 修订内容 对比试验 指示剂 |
| 英文关键词: spectrophotometry Amendment No. 1 revised content comparative test indicator |
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| 中文摘要: |
| 水溶性六价铬是重金属中毒性较大的元素之一，含有较高水溶性六价铬的水泥产品在生产、流通、使用及废弃环节均会对人身健康产生严重影响，同时会造成严重的环境污染。《水泥中水溶性铬（Ⅵ）的限量及测定方法》（GB 31893—2015）规定采用分光光度法测定水泥中水溶性铬（Ⅵ）的限量值应不大于 10.00 mg/kg。为保持标准的适应性和准确性，采用修改单形式对GB 31893—2015进行修订。本文主要简述了GB 31893—2015《水泥中水溶性铬（Ⅵ）的限量及测定方法》国家标准第1号修改单中的修订内容；进行了变更的检测方法与原检测方法的对比试验，同时进行了不同厂家指示剂对检测结果的误差分析，可为实际检测提供参考。 |
| 英文摘要: |
| Water-soluble hexavalent chromium is one of the most toxic elements in heavy metals. Cement products containing high water-soluble hexavalent chromium will have a serious impact on human health during production, circulation, use and disposal. cause serious environmental pollution. "Limits and Determination Methods of Water-Soluble Chromium (VI) in Cement" (GB 31893-2015) stipulates that the limit value of water-soluble chromium (VI) in cement determined by spectrophotometry should not be greater than 10.00 mg/kg. In order to maintain the adaptability and accuracy of the standard, GB 31893-2015 is revised in the form of a revision sheet. This paper briefly describes the revisions in the National Standard No. 1 Amendment List of GB 31893-2015 "Limits and Determination Methods of Water-Soluble Chromium (VI) in Cement"; At the same time, the error analysis of the test results of the indicators from different manufacturers is carried out, which can provide a reference for the actual test. |
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