ICP-AES法测定氯化钾中的钙镁  

Determination of Calcium and Magnesium in Potassium Chloride by ICP-AES Method

作　　者：白碧佳 Bai Bijia(Shanxi Applied Chemistry Research Institute,Shanxi Province Fertilizer and Pesticide Product Quality Supervision and Inspection Station,Taiyuan Shanxi 030027,China)

机构地区：[1]山西省应用化学研究所山西省化肥农药产品质量监督检验站,山西太原030027

出　　处：《山西化工》2025年第3期108-109,共2页Shanxi Chemical Industry

摘　　要：氯化钾肥经稀盐酸前处理,采用ICP-AES法同时测定钙、镁含量,对溶样方式进行优化。钙、镁质量浓度检出限分别为0.005、0.007mg/kg,相对标准偏差为2.75%~4.26%(n=6),加标回收率在93.3%~103.3%。该方法样品前处理简单,准确度和精密度良好,能满足大批量氯化钾肥中钙、镁含量测定要求。Potassium chloride fertilizer was pretreated with dilute hydrochloric acid,and the calcium and magnesium content was simultaneously determined using the ICP-AES method,with optimization of the sample dissolution process.The detection limits for calcium and magnesium concentrations were 0.005 mg/kg and 0.007 mg/kg,respectively.The relative standard deviation ranged from 2.75%to 4.26%(n=6).The recovery rates for spiked samples were between 93.3%and 103.3%.This method features simple sample pretreatment,good accuracy and precision,making it suitable for the determination of calcium and magnesium content in large batches of potassium chloride fertilizer.

关 键 词：氯化钾 ICP-AES 准确度 精密度 

分 类 号：O657[理学—分析化学]