不同提取方法用于复混肥中钾含量测定的对比研究  

Comparative Study on Determination of Potassium Content in Compound Fertilizer by Different Extraction Methods

作　　者：廉翔 Lian Xiang(Shanxi Research Institute of Applied Chemistry,Shanxi Quality Supervision and Inspection Station of Fertilizer and Pesticide Product,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》2024年第1期94-95,共2页Shanxi Chemical Industry

摘　　要：分别采用超声和振荡法提取复混肥中的钾离子并测定其氧化钾含量,与沸水提取法的测定结果进行了对比,优化测定条件后进行了精密度和加标回收实验。结果显示,超声提取5 min可完全水解出复混肥中的钾离子,该方法加标回收率为99.1%~100.6%,相对标准偏差为0.31%;振荡提取10 min可完全水解出复混肥中钾离子,该方法加标回收率为98.9%~100.9%,相对标准偏差为0.34%。Ultrasonic and oscillation methods were used to extract potassium ions from compound fertilizer and the content of potassium oxide was determined,then the results were compared with the boiling water extraction method.The precision and standard recovery experiments were carried out after optimizing the determination conditions.The results showed that potassium ions in the compound fertilizer could be completely hydrolyzed by ultrasonic extraction for 5 min.The standard addition recovery of this method is 99.1~100.6%and the relative standard deviation is 0.31%.Potassium ions in the compound fertilizer could be hydrolyzed by oscillation extraction for 10min.The standard addition recovery of this method is 98.9~100.9%and the relative standard deviation is 0.34%.

关 键 词：复混肥料 氧化钾 超声提取 振荡提取 

分 类 号：O655[理学—分析化学]