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介绍用化学分析方法测定有机肥料氮、磷、钾的含量,即样品经硫酸-过氧化氢消化后,制备待测溶液,分取待测溶液用NC-2型快速定氮仪测定氮,用磷钼酸喹啉重量法测定磷,用四苯硼酸钾重量法测定钾,不需使用分光光度计和火焰光度计,适宜一般复混肥料厂采用,对含氮、磷、钾分别达0.1%以上的样品均可用本法测定,方法的准确度和精密度能满足生产的要求。
Introduction Chemical analysis method for the determination of nitrogen, phosphorus and potassium content of organic fertilizers, that is, sample digestion by sulfuric acid - hydrogen peroxide, the test solution was prepared, the test solution was divided by NC-2 type fast nitrogen determination of nitrogen, with Phosphorus molybdate gravimetric gravimetric determination of potassium, potassium tetraphenylborate gravimetric determination of potassium, without the use of spectrophotometer and flame photometer, suitable for general compound fertilizer plant adopted, nitrogen, phosphorus and potassium were up to 0.1% The above samples can be measured by this method, the accuracy and precision of the method can meet the production requirements.