微波作用微型化实验快速测定硝酸磷肥及硝酸磷钾肥中磷  

Rapid determination of phosphorus in nitrophosphate fertilizer and phosphorus potassium nitrate fertilizer by microwave assisted miniaturization experiment

作　　者：彭桦[1] 何宾宾[1] 姜威[1] 朱桂华 聂鹏飞 龚丽[1] 杜雄雁 陈凡永 PENG Hua;HE Binbin;JIANG Wei;ZHU Guihua;NIE Pengfei;GONG Li;DU Xiongyan;CHEN Fanyong(National Engineering and Technology Research Center for Development and Utilization of Phosphorus Resources,Yunnan Phosphate Chemical Group Co.,Ltd.,Kunming 650600,China;Quality Inspection Center of Phosphorus Chemical Division,Yunnan Phosphate Chemical Group Co.,Ltd.,Kunming 650600,China)

机构地区：[1]云南磷化集团有限公司国家磷资源开发利用工程技术研究中心,云南昆明650600 [2]云南磷化集团有限公司磷化工事业部质检中心,云南昆明650600

出　　处：《磷肥与复肥》2021年第12期39-41,共3页Phosphate & Compound Fertilizer

基　　金：云南省磷化工节能与新材料重点实验室(2019);国家重点研发计划“中低品位磷矿非常规体系反应动力学特征研究”(2018YFC1900202-2);国家重点研发计划“渣-酸高值化协同化利用技术及工程示范”(2018YFC1900206-4)。

摘　　要：用柠檬酸-硝酸铝溶液代替王水作消解液,采用微波消解硝酸磷肥和硝酸磷钾肥,优化消解参数,消解后通过微型化实验,磷钼酸喹啉重量法测定其中的磷,用微波炉代替烘箱快速蒸干磷钼酸喹啉沉淀中的水分。该方法试剂用量只有GB/T 10512—2008方法用量的25.0%~33.3%,分析成本低,能减少环境污染,易于推广;与GB/T 10512—2008仲裁法相比较,分析时间只有原来的1/7,结果无显著性差异,绝对误差在0.01%~0.19%,加标回收率在95.6%~106.1%。Citric acid aluminum nitrate solution is used instead of aqua regia as digestion solution,nitro phosphate fertilizer and phosphorus potassium nitrate fertilizer are digested by microwave,and the digestion parameters are optimized.After digestion,the phosphorus is quickly determined by quinoline phosphomdybdate gravimetric method through miniaturization experiment.The microwave oven is used instead of oven to quickly evaporate the water in quinoline phosphomolybdate precipitation.The reagent amount of this methood is only 25.0%-33.3%of the amount of GB/T 10512—2008,the analysis cost is low,reducing environmental pollution and easy to popularize.Compared with GB/T 10512—2008 arbitration method,the analysis time is only 1/7 of the original,the results have no significant difference with the absolute error of0.01%-0.19%,and the recovery rate is 95.6%-106.1%.

关 键 词：硝酸磷肥 硝酸磷钾肥 微型化实验 微波消解 磷 

分 类 号：TQ440.72[化学工程—化学肥料工业]