摘要
目的在“三普”工作中建立一种测定土壤中有效态铜、铁、锰、锌的最优方法。方法AB-DTPA浸提–电感耦合等离子体光谱法同时测定土壤中有效态铜、铁、锰、锌。结果铜、铁、锰在0.50~100 mg/L、锌在0.25~10.0 mg/L浓度范围内线性关系好,相关系数均在0.999以上,方法检出范围为0.06~0.69 mg/kg,空白试验结果稳定,方法精密度均小于5.0%,方法比对样品平行差均在合格范围之内。样品中有效铁、锰和铜、锌差了一到两个数量级,同时测定依然可以得到准确的结果。结论此法的检出限、精密度符合分析要求,准确度高,适用于土壤中有效态铜、铁、锰、锌的检测。
Objective To establish an optimal method for the determination of available copper,iron,manganese and zinc in soil in Sanpu.Methods AB-DTPA leaching and inductively coupled plasma spectrometry were used to determine the available Cu,Fe,Mn and Zn in soil simultaneously.Results The detection limit and precision met the analysis requirements,and the high accuracy of copper,iron and manganese were in the concentration range of 0.50~100 mg/L,and zinc was in the concentration range of 0.25~10.0 mg/L.The linear relationship was good,and the correlation coefficients were all above 0.999.The detection range of the method was in the range of 0.06~0.69 mg/kg,and the blank test results were stable.The precision of the methods was less than 5.0%,and the parallel differences of the samples were all within the qualified range.The available iron,manganese and copper,zinc in the sample are different by one to two orders of magnitude,and the determination can still obtain accurate results.Conclusion The detection limit and precision of this method meet the requirements of analysis,and the accuracy is high,which is suitable for the detection of available copper,iron,manganese and zinc in soil.
作者
杨芳梅
莫颖明
YANG Fang-Mei;MO Ying-Ming(Hainan Geological testing Research Center,Haikou 570206,China)
出处
《实验室检测》
2024年第9期14-18,共5页
Laboratory Testing
关键词
电感耦合等离子体光谱
检出限
精密度
准确度
inductively coupled plasma spectrum
detection limit
precision
accuracy
