摘要
为探究阿特拉津在湖泊冰融化过程中的迁移规律,配制2组不同初始浓度的阿特拉津水样,并通过模拟湖泊的自然结冰和融冰的过程,分析阿特拉津在冰水体系和冰体内部的分布及其在冰体融化过程中的融出浓度。研究结果表明,不同初始浓度的阿特拉津溶液在冰水两相中的分布规律均为冰融水浓度<结冰前水浓度<冰下水浓度,在冰中的分布表现均为上层浓度<中层浓度<下层浓度;阿特拉津在初期冰融水(融1)中含量最高,即融冰过程中阿特拉津存在初期洗脱现象;随着融冰过程的进行,阿特拉津会呈少量、有递减趋势的融出;融冰进程前段冰融水(融1、融2、融3)中阿特拉津含量大于原冰体含量的77%,阿特拉津在融冰初期向冰融水中的迁移能力大于融冰后期。
In order to explore the migration law of atrazine in the melting of lake ice,two groups of atrazine water samples with different initial concentrations were prepared,and the distribution of atrazine in the ice system and ice body and its melting concentration in the melting process were analyzed by simulating the natural freezing and melting process of the lake.The results showed that the distribution of atrazine in ice water two-phase is as follows:concentration of ice<initial concentration of water before freezing<concentration of under-ice water;the distribution in ice phase is in the order of the upper layer concentration<the middle layer concentration<the lower layer concentration.During the process of ice melting,the content of atrazine in the initial melt water(melt 1)was the highest.Atrazine was eluted at the initial stage,which was characterized by high concentration.With the process of ice melting,atrazine would melt out in a small amount with a decreasing trend.The content of atrazine in melt water(melt 1,melt 2,melt 3)in the initial stage of ice melting process was more than 77%of the original ice content,which means that more than 77%of atrazine in the ice body could be melted out of the first three melting water(melt 1,melt 2,melt 3),the migration of atrazine into ice melt water in the initial stage is stronger than that in the later stage.
作者
张岩
赵万里
于爱鑫
刘玉灿
ZHANG Yan;ZHAO Wanli;YU Aixin;LIU Yucan(School of Civil Engineering,Yantai University,Yantai,264005,China)
出处
《环境化学》
CAS
CSCD
北大核心
2022年第7期2320-2325,共6页
Environmental Chemistry
基金
国家自然科学青年基金(51609207)
烟台大学研究生科技创新基金(YDYB2103)资助.
