potassium nitrate and sodium nitrite 硝酸钾和亚硝酸钠混合物
The phase diagram analysis of sodium nitrite and sodium nitrate production was made and the control conditions of product quality in the production was also put forward.
对亚硝酸钠和硝酸钠生产相图进行了分析，提出了提高亚硝酸钠和硝酸钠产品质量的生产控制条件。
A discussion is also held on the compounds interfering with the methods. The main interfering compounds are phenol, sodium sulfite. sodium nitrite and sodium nitrate, etc.
还对一些物质对这两种方法的干扰情况进行了讨论，其中，苯酚、亚硫酸钠、亚硝酸钠和硝酸钠等为主要干扰物质。
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