以氯气和氢氧化钠为原料制备次氯酸钠溶液，控制其中游离碱含量在10.8%左右，有效氯在8.0%左右。

Sodium hypochlorite solution has been prepared by chlorine and sodium hydroxide, the content of free alkali should be controlled at about 10.8%, and the effective chlorine at about 8.0%.

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通过对氯碱生产中一次盐水游离氯及有效氯含量分析方法的对比，确定了亚硝酸根离子对分析结果的影响。

After comparison of analysis methods of free chlorine and active chlorine, it confirmed the influences on analysis results from nitrite ion.

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