摘要
土壤有效养分的分析测试是测土施肥的关键内容,其测定方法的研究近年来倍受关注。该研究以混合标准溶液模拟可同时提取多种有效养分的Mehlich 3(M3)土壤浸提液,结合能够同步测定多种元素含量的等离子体发射光谱法,对ICP-AES的最佳工作条件进行了系统研究。实验结果表明,当载气流量在0.80 L.min-1、观察高度15 mm、功率为1200 W时,各元素的测定结果较为稳定,对溶液中20种有效养分P,K,Ca,Mg,Na,Fe,Mn,Cu,Zn,Cd,Cr,Pb,Ni,Al,B,Mo,S,Si,Se,As进行准确高效的测定。该研究将为进一步建立我国土壤通用浸提剂养分测定方法提供试验依据。
As a key process of fertilization with soil test,the determination of soil effective nutrients has received great attention in recent years.Based on a series of standard solution mixtures,which simulate the soil nutrients extracted by Mehlich 3（M3） reagent,the optimal operating condition of ICP-AES was explored in a systematic way.The results show that the 20 key nutrient elements（P,K, Ca,Mg,Na,Fe,Mn,Cu,Zn,Cd,Cr,Pb,Ni,Al,B,Mo,S,Si,Se,and As） in the solutions can be determined correctly and proficiently when ICP-AES is set at 0.80 L·min-1 of carrier gas flux,with observation height 15 mm and power 1 200 W.This study supplies a primary experimental foundation for establishing the determination technique of essential nutrient elements,extracted from soils in China with the general soil-nutrient extractant M3 reagent.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2010年第9期2564-2566,共3页
Spectroscopy and Spectral Analysis
基金
国家“十一五”科技支撑计划重点项目(2008BADA4B02)
国家自然科学基金项目(40973054)资助
