腐植酸钾产品中氧化钾含量的测定方法  

Determination of Potassium Oxide Content in Potassium Humate Product

作　　者：王春花 郭振军 Wang Chunhua;Guo Zhenjun(Xinjiang Black Ecological Science Technology Co.Ltd.,Urumqi,831400)

机构地区：[1]新疆黑色生态科技股份有限公司,乌鲁木齐831400

出　　处：《腐植酸》2018年第6期54-57,共4页Humic Acid

摘　　要：为了优化腐植酸钾肥料产品中氧化钾含量的测定方法,对比了用盐酸溶液抽提法与GB/T17767.3-2010《有机-无机复混肥料的测定方法第3部分:总钾含量》标准中氧化钾测定方法的差异。结果表明,盐酸溶液抽提法的测定原理与GB/T 17767.3-2010相同,不同点是在样品溶液的制备过程中不采用硝酸-高氯酸消煮法和硫酸-过氧化氢消煮法,而是利用腐植酸遇酸沉淀的特性,将样品采用盐酸溶液抽提的方式来处理;并验证了此方法的准确性、安全性、快速性,以此为腐植酸钾肥产品中氧化钾含量测定标准的制定提供参考。In order to optimize the determination method of potassium oxide content in humic acid potassium fertilizer.The difference determination method of potassium oxide that extraction with hydrochloric acid was compared with GB/T 17767.3-2010 Determination methods of organic-inorganic compound fertilizers-Part iii:Determination of total potassium.The results showed that instead of using nitric acid-perchloric acid digestion and sulfuric acid-hydrogen peroxide digestion method,the potassium humate samples were extracted by hydrochloric acid solution according to the characteristics of humic acid in acid precipitation.The accuracy,safety and rapidity of this method were also verified to provide reference for the determination standard of potassium oxide content in humic acid potassium fertilizer.

关 键 词：腐植酸钾 盐酸溶液抽提 氧化钾 四苯硼酸钾重量法 

分 类 号：TQ314.1[化学工程—高聚物工业] TQ444.63