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1. 滁州学院国土信息工程系
2. 中国科学院东北地理与农业生态研究所
纸质出版:2009
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李彬, 王志春, 梁正伟, 等. 基于离子强度与活度的地下水质评价[J]. 中北大学学报(自然科学版), 2009,30(6):594-598.
李彬, 王志春, 梁正伟, et al. Groundwater Quality Evaluation Based on Ionic Strength and Ionic Activity[J]. 2009, 30(6): 594-598.
以吉林省西部典型苏打碱土区为例
对地下水离子强度和离子活度进行了计算
讨论了离子强度与各离子活度系数之间的关系.分别以离子活度代替离子浓度
计算地下水的相应参数
对地下水质进行评价.结果表明
以离子浓度为基础计算的各参数均小于相应以离子活度为基础的计算值.因此对该区地下水而言
仅考虑离子浓度会低估地下水质的危害程度.以离子活度为基础的相应评价可能更符合本区的实际情况.
A typical sodic soil area in the west of Jilin province was selected for test region.Ionic strength and ionic activity of groundwater were determined.Relationships between ionic strength and ionic activity coefficient were analyzed.Based on ionic activity
parameters of water quality evaluation were calculated and groundwater qualities in different depths were evaluated.Results show that the values of these parameters based on ion concentration are less than those based on corresponding ionic activity data.Therefore the results of quality evaluation for this kind of groundwater are on the low side when ion concentration is just considered.Results of water quality evaluation based on ionic activity agree with the practical situation well possibly.
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