当前位置: 首页 > 文章 > 几种可变电荷土壤电荷零点的初步研究 华中农业大学学报 1995 (5) 449-454
Position: Home > Articles > A PRELIMINARY STUDY ON POINT OF ZERO CHARGE OF VARIABLE CHARGE SOILS Journal of Huazhong Agricultural University 1995 (5) 449-454

几种可变电荷土壤电荷零点的初步研究

作  者:
贺纪正;谭文峰;刘凡;杨泽元
单  位:
华中农业大学土化系
关键词:
电荷零点;测定方法;可变电荷土壤
摘  要:
用电位滴定(PT)法、盐滴定(ST)法和盐滴定一电位满定(STPT)法3种方法,测定了4种可变电荷土壤的电荷零点(PZC),并对不同方法所得的结果进行了初步比较。棕红壤、红壤、赤红壤和砖红壤由PT法所得的PZC分别为3.10、3.60、3.75和4.40,ST法和STPT法所得的结果相当,PZC分别为3.4,4.1,3.9和4.5。由PT法所得的PZC低于由ST和STPT法所得的PZC,不同方法所得结果之间的差异,值得进一步研究。
译  名:
A PRELIMINARY STUDY ON POINT OF ZERO CHARGE OF VARIABLE CHARGE SOILS
作  者:
He Jizheng; Tan Wenfeng ;Liu Fan ;Yang Zheyuan(Huazhong Agricultural University, Wuhan 430070)
关键词:
point of zero change; method; variable charge soil
摘  要:
The point of zero charge (PZC) of four vairable charge soils was investi-gated with three different methods and the results were compared ehch other. The PZC val-ues measured by the potential titration (PT) method were 3. 10, 3. 60, 3. 75, and 4. 40 for brown red soil, red soil, laterictic red soil, and latosol respectively' The PZC values mea-sured by the salt titration (ST) method and the salt titration-potential titration (STPT)method were very similar, and they were 3. 4, 4. 1, 3. 9, and 4. 5 for the corresponding soils respectively. The PZC value measured by the PT method was lower than those by the ST method and the STPT method. The differences of the results gained from the different meth-ods deserve further investigation.

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