摘要
为探究乌梁素海重金属在冰-水介质中迁移的微观机理,对冰封期乌梁素海不同重金属(Fe、As、Cr、Cu、Zn、Mn、Cd、Hg、Pb)水样进行室内单向结冰模拟,总结重金属在冰体和冰下水体中的分布特征,并根据第一性原理进行结合能计算,从结合能的角度分析其微观机理。结果表明:各重金属与水体的结合能均大于与冰体的,表明重金属在水体中比在冰体中更稳定,驱使重金属从冰体向冰下水体迁移。
In order to explore the microscopic mechanism of heavy metals migration in ice water medium of Lake Ulansuhai,indoor unidirec-tional icing simulation was carried out on water samples of different heavy metals(Fe、As、Cr、Cu、Zn、Mn、Cd、Hg、Pb)in Lake Ulansuhai during the icebound period,and the distribution characteristics of substances in the ice layer and sub ice water layer were summarized.The calculation was carried out according to the first principle,and its microscopic mechanism was analyzed from the perspective of binding ener-gy.The binding energy of heavy metals with water is greater than the binding energy of heavy metals with ice.A large binding energy means that heavy metals are more stable in water.That is to say heavy metals are more stable in water than in ice,driving them to migrate from ice layer to sub ice water layer.
作者
孙驰
王俊
史小红
吴用
王浩
张亚峰
姜卜源
SUN Chi;WANG Jun;SHI Xiaohong;WU Yong;WANG Hao;ZHANG Yafeng;JIANG Buyuan(College of Civil Engineering,Zhengzhou Institute of Technology,Zhengzhou 450053,China;College of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University,Huhhot 010018,China;College of Environment and Resources,Henan Agricultural University,Zhengzhou 450002,China)
出处
《人民黄河》
CAS
北大核心
2024年第4期86-91,共6页
Yellow River
基金
河南省高等学校重点科研计划项目(22A170022,23A630014,22A410004)
河南省科技攻关项目(222102320447,222102320383)
河南省高等教育教学改革研究与实践重点项目(2021SJGLX295)
河南农业大学科技创新基金资助项目(KJCX2020C05)
郑州工程技术学院重点学科建设项目。
关键词
重金属
冰-水双介质
微观机理
第一性原理
结合能
乌梁素海
heavy metal
ice-water double phase medium
microscopic mechanism
first principle
binding energy
Lake Ulansuhai
