一种快速测定聚磷酸钙镁中有效磷的方法  

A method for fast determination of available phosphorus in calcium magnesium polyphosphate

作　　者：王伯通 闫章印 张营 陈德清 刘永秀 WANG Botong;YAN Zhangyin;ZHANG Ying;CHEN Deqing;LIU Yongxiu(Kingenta Ecological Engineering Group Co.,Ltd.,Linshu 276700,China;State Key Laboratory of Nutrition Resources Integrated Utilization/National Engineering Technology Research Center for SCRF,Linshu 276700,China;Key Laboratory of Plant Nutrition and New Fertilizers Creation R&D,Ministry of Agriculture,Linshu 276700,China)

机构地区：[1]金正大生态工程集团股份有限公司,山东临沐276700 [2]养分资源高效开发与综合利用国家重点实验室/国家缓控释肥工程技术研究中心,山东临沐276700 [3]农业部植物营养与新型肥料创制重点实验室,山东临沐276700

出　　处：《磷肥与复肥》2020年第1期37-39,共3页Phosphate & Compound Fertilizer

基　　金：国家重点研发计划：非常规硝酸分解磷矿清洁生产关键技术及工程示范(2018YFC1900205)

摘　　要：建立一种快速测定聚磷酸钙镁中有效磷的方法。用EDTA-2Na溶液提取聚磷酸钙镁肥料中有效磷,用氢氧化钠溶液调节pH至12.0~12.5,煮沸15 min;并选择磷钼酸喹啉重量法测定有效磷。实验结果表明,该方法具有检测快速、准确度高、重现性好、操作简单等特点。A method for fast determination of available phosphorus in calcium magnesium polyphosphate is developed. The available phosphorus is extracted with EDTA-2 Na solution, the pH of the system is adjusted to12.0-12.5 by sodium hydroxide solution, and then boiling for 15 min. The effective phosphorus is measured by quinoline phosphomolybdate gravimetric method. The experimental results show that this method has the advantages of rapid detection, high accuracy, good reproducibility and simple operation.

关 键 词：聚磷酸钙镁 磷钼酸喹啉重量法 有效磷 检测方法 

分 类 号：TQ440.72[化学工程—化学肥料工业]