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本文报告用选择性钾电极测定油枯这种有机肥料的全钾含量。在溶样方法上,把传统的湿灰化处理法,改进为用硝酸溶样至碳化。缩短了溶样时间,同时采用标准加入法,在悬浊体系中进行测定。方法简便快速。测定结果与原子吸收法对照,误差在3%以下。一、实验部分1.主要仪器和试剂PXJ—1型数字式离子计(江苏电分析仪器厂)401型钾电极(江苏电分析仪器厂)
This paper reports the determination of the total potassium content of this organic fertilizer using a selective potassium electrode. In the sample-dissolving method, the traditional wet ashing treatment method is improved to dissolve sample to carbonize with nitric acid. Shorten the sampling time, using standard addition method, the determination of the suspension system. The method is quick and easy Measurement results and atomic absorption method control, the error is below 3%. First, the experimental part 1. The main instruments and reagents PXJ-1 digital ion meter (Jiangsu Electric Analysis Instrument Factory) 401-type potassium electrode (Jiangsu Electric Instrument Factory)