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Position: Home > Articles > Simultaneous determination of available phosphorus and potassium in compound fertilizers by ICP-AES Phosphate & Compound Fertilizer 2022,37 (1) 38-40+46

电感耦合等离子体发射光谱法同时测定复合肥料中的有效磷和钾

作  者:
覃当麟;黄芳;秦小猛;何京明;阎旭华;刘守廷;黄仁贵
单  位:
广西博测检测技术服务有限公司
关键词:
电感耦合等离子体发射光谱法;复合肥料;有效磷;钾
摘  要:
以乙二胺四乙酸的氨水溶液为浸提剂,采用电感耦合等离子体发射光谱法同时提取和测定复合肥料中有效磷和钾。对样品分析谱线选择、浸提剂选择和样品定容体积影响等进行了研究。该方法有效磷检出限为0.67 mg/L,7次测定相对标准偏差为2.25%;钾检出限为0.22 mg/L,7次测定相对标准偏差为2.71%;与GB/T 15063—2020中仲裁法比较具有试剂消耗少、耗时少、能进行大批量分析等优点;与GB/T 8573—2017和NY/T 2540—2014中等离子体发射光谱法分别提取、分别测定比较,该法可以同时提取、同时测定,既减少提取和检测工序,又节省试剂。该方法简单准确,特别适用于大批量复合肥料中有效磷和钾含量的同时测定。
译  名:
Simultaneous determination of available phosphorus and potassium in compound fertilizers by ICP-AES
作  者:
QIN Danglin;HUANG Fang;QIN Xiaomeng;HE Jingming;YAN Xuhua;LIU Shouting;HUANG Rengui;Guangxi Boce Test Technical Services Co.,Ltd.;
关键词:
inductively coupled plasma atomic emission spectrometry(ICP-AES);;compound fertilizers;;available phosphorus;;potassium
摘  要:
The available phosphorus and potassium of compound fertilizer are extracted by ammonia solution of ethylenediamine tetraacetic acid,and determined by ICP-AES. The selection of extractant and spectral line,the effect of sample constant volume are studied. In this method,the available phosphorus has a detection limit of 0.67 mg/L and a precision of 2.25%; The detection limit of potassium is 0.22 mg/L,and the precision is 2.71%. Compared with the arbitration method in GB/T 15063—2020, it has the advantages of less reagent consumption,less time consumption and large-scale analysis. Compared with the plasma emission spectrometry methods in GB/T 8573—2017 and NY/T 2540—2014,this method can extract and determine simultaneously,which saves both extraction and detection procedures and reagents. The method is simple and accurate,and is especially suitable for the simultaneous determination of available phosphorus and potassium in a large number of compound fertilizers.

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