Position: Home > Articles > Study on the Improved AB-DTPA Method for the Determination of Six Nutrient Elements in Acid Soil
Journal of Anhui Agricultural Sciences
2020
(12)
193-195
改进AB-DTPA用于一次性浸提测定酸性土壤中6种营养元素有效态方法研究
作 者：
谢飞;唐娟;严妍;曹顺滨
单 位：
关键词：
土壤浸取剂;DTPA;AB-DTPA法;土壤营养元素;有效组分
摘 要：
在AB-DTPA法复合浸取土壤营养元素的基础上,提出了一种适用于浸取土壤中营养元素有效组分的新方法,即采用0.2 mol/L乙酸(HOAC)-0.5 mol/L乙酸铵(NH_4OAC)-0.005 mol/L二乙三胺五乙酸(DTPA)进行土壤营养元素P、K、Fe、Mn、Cu、Zn有效态浸取,ICP-OES法测定,并与AB-DTPA法进行对比研究。结果表明,该浸取体系对土壤各元素有效态浸取结果均在认定值范围内,精密度符合要求。方法元素测定与AB-DTPA法之间具有良好的线性相关性,且该浸取体系方法有效提高了速效K、Fe、Mn元素的有效态浸取结果测定准确度。此方法的研究对于快速检测农业土壤多种营养元素具有重要意义。
译 名：
Study on the Improved AB-DTPA Method for the Determination of Six Nutrient Elements in Acid Soil
作 者：
XIE Fei;TANG Juan;YAN Yan;East-China Metallurgical Institute of Geology and Exploration;
关键词：
Soil extractant;;DTPA;;AB-DTPA method;;Soil nutrient elements;;Active principle
摘 要：
On the basis of AB-DTPA soil extraction method,a new method for the determination of the effective components of soil nutrients was proposed.The available state of P,K,Fe,Mn,Cu,Zn in soil was extracted by 0.2 mol/L acetic acid(HOAc)-0.5 mol/L ammonium acetate(NH_4OAC)-0.005 mol/L diethylenetriamine pentaacetic acid(DTPA),determined by ICP-OES and compared with methods of AB-DTPA.The results showed that the effective state of soil elements were in the range of the identified value,and the precision met the corresponding requirements.There was a good linear correlation between the determination of elements of AB-DTPA method.The accuracy of the extraction results of available potassium,Fe,Mn elements were improved by this method.The study of this method is of great significance for the rapid detection of multiple nutrient elements in agricultural soil.
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