摘要
采用自动淋洗仪前处理装置、自动蒸馏仪快速测定土壤阳离子交换量(CEC),研究了影响测定结果的关键分析条件。通过对实际样品和土壤标准样品的实验分析,结果表明乙酸铵溶液反应时间15 min,乙醇洗涤3次,每次用量50 mL,蒸馏量100 g最佳,该条件下测得的实验结果的准确度和精密度均符合要求。此方法操作简便、试剂消耗少、效率高,适用于大批量快速测定土壤CEC。
In this paper,the key analytical conditions affecting the determination results were studied by using the pretreatment device of the automatic elution apparatus and the automatic distillation apparatus for the rapid determination of the soil cation exchange capacity.Through the experimental analysis of the actual samples and soil standard samples,the results showed that the ammonium acetate solution was reacted for 15 min,the soil was washed with ethanol for three times,the dosage of each time was 50 mL,and the best distillation was 100 g,and the accuracy and precision of the experimental results met the requirements.This method was simple to operate,less reagent consumption,high efficiency and suitable for mass determination of soil cation exchange capacity.
作者
迟伟伟
徐苏红
CHI Wei-wei;XU Su-hong(Xuzhou Environmental Monitoring Center of Jiangsu Province,Xuzhou 221002,China)
出处
《环境科技》
2019年第6期60-63,共4页
Environmental Science and Technology
关键词
自动淋洗仪
阳离子交换量
土壤
Automatic elution apparatus
Cation exchange capacity
Oil
