摘要
采用三氯化六氨合钴浸提-分光光度法测定新疆土壤中阳离子交换量。方法检出限为0.8 cmol+/kg,标准曲线的线性相关系数为0.999 8,精密度(RSD,n=6)为2.04%~7.68%,在新疆土壤样品测定中,平行样品相对偏差为0.00%~8.58%。实验结果表明,该方法准确可靠、灵敏度高、操作简便,适用于新疆土壤中阳离子交换量分析。
A method was developed for determination of the cation exchange capacity in Xinjiang soils using a hexamminecobalt trichloride solution as extractant by spectrophotography.The detection limits of the method for soils were 0.8 cmol+/kg.The correlation coefficient of standard curve-r is greater to 0.999 8,and the RSD is 2.04%~7.68%(n=6).The relative deviation of parallel samples is 0.00%~8.58%in the determination of Xinjiang soil samples.The results show that the method is sensitive,accurate,simple and suitable for the determination of the cation exchange capacity in Xinjiang soils.
作者
段小燕
施玉格
DUAN Xiao-yan;SHI Yu-ge(Xinjiang Environmental Monitoring Centre,Urumqi Xinjiang 830011,China)
出处
《干旱环境监测》
2019年第3期113-116,共4页
Arid Environmental Monitoring
关键词
阳离子交换量
三氯化六氨合钴浸提-分光光度法
新疆土壤
The cation exchange capacity
Spectrophotography
Hexamminecobalt trichloride solution
Xinjiang Soils
