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熱門關鍵詞： 工业级氯化氫 化学级氯化氫 高纯级氯化氫 电子级氯化氫 硫化氫氣體 高純氯氣 配套設備

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氯化氫的卫生检测的标准的方法

返回打印发布时间：2016/5/30 点击：12366

氯化氫的卫生检测的标准的方法

氯化氫作为医药、农药、电子等众多行业的合成材料、中间体，有着不可替代的重要作用。但是众多工业生产中却会副产氯化氫，这些氯化氫废气如果直接排入空气中，会对空气造成严重的污染。空气中含有氯化氫的量并不多，而且还掺杂着一些其他的其他，那么对于测定就带来了一些困难，所以要寻求一种有效的方法才能够完成。怎样对空气中含有的氯化氫进行测定。

测定空气中氯化氫的方法，有硫氰酸汞比色法及离子选择性电极法等。硫氰酸汞比色法及离子选择性电极法均具有准确、灵敏、快速、简便等特点，国内外多已采用。但都是氯化氫的非特异性反应，干扰物多，测定的是氯离子量。若用硝酸处理的聚氯乙烯滤膜采集空气中的氯化物，而氯化氫气体在这种滤膜上的阻留很小，易被后面浸渍过碱溶液的滤纸所吸收，因而可做到分别测定空气中氯化物和氯化氫。该法已推荐为居住区大气中氯化氫卫生检验标准方法。

研究发现，氯离子能够和硫氰酸汞发生反应，将硫氰酸根置换出来，这样高铁离子与硫酸根作用就会变为血红色，可以根据颜色的深浅程度来判断和计算出含量，其中所涉及到的化学方程式如下所示：

①2Cl－+Hg（SCN）2→HgCl2+2SCN－；

②SCN－＋Fe3+→Fe（SCN）2+。\

国家相关规定对于氯化氫存在于大气中的浓度有严格的规定。相关企业应该做好副产氯化氫的控制排放以及回收工作。

我公司长期供应各种规格高纯氯化氫産品，並提供氯化氫气体專用配套設施、設備、閥門、減壓器，並提供優質技術服務和售後。

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