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利用福尔哈德法测定氯离子含量的方法原理,通过简化实验步骤、优化试剂组成,提出半定量快速确定复混肥料中氯离子含量等级的方法。实验结果表明,此方法检测结果与国标方法判定结果一致,能够正确地反映样品的氯离子浓度范围。本方法操作简单,实用性强,给消费者及执法人员现场确定复混肥料中氯离子含量等级是否与标识一致提供了新手段。
The principle of the method of determining the content of chloride ion was established by using the Forde Haar method. The method of semi-quantitative determination of chloride ion content in the compound fertilizer was proposed by simplifying the experimental procedure and optimizing the reagent composition. The experimental results show that the detection results of this method are consistent with those of the national standard method, and can correctly reflect the range of chloride ion concentration in the sample. The method has the advantages of simple operation and strong practicability, and provides consumers and law enforcement officers with new means for determining on the spot whether the level of chloride ion in the compound fertilizer is consistent with the mark.