在磷酸介质中，利用亚硝酸根催化溴酸钾氧化亮绿和甲基橙褪色的指示反应，建立催化光度法测定痕量亚硝酸根的新方法。
The method was based on the catalytic effect of nitrite ion on the oxidation fading reaction of methyl orange and bright green with potassium bromate as oxidant in phosphoric acid medium.
介绍硝酸铵-磷酸-铵—硫酸钾系高浓度烤烟专用复合肥的开发应用。
The paper describes the development and application of a special complex fertilizer containing flue -cured tobacco ammonium nitrate-ammonium phosphate-potassium sulphate.
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