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氧化液中硝酸钠的测定,常见的有两种方法:一种是在碱性溶液中以铝或锌还原硝酸钠及亚硝酸钠成氨,蒸馏分离后,以中和法进行测定,这一方法操作手续复杂,周期长。另一方法系在酸性溶液中以汞还原硝酸钠及亚硝酸钠为氧化氮,根据氧化氮的体积计算硝酸钠含量。虽然在速度上较快,但作起来很不方便,
Determination of sodium nitrate in the oxidation solution, there are two common methods: one is in alkaline solution with aluminum or zinc reduction of sodium nitrate and sodium nitrite into ammonia, distillation separation, and determination by the method of neutralization Method of operation complicated, long cycle. Another method is to reduce sodium nitrate and sodium nitrite to nitric oxide in an acidic solution and calculate the sodium nitrate content based on the volume of nitric oxide. Although the speed is faster, but it is very inconvenient to do,