摘要
从必需/非必需金属以及金属价态两个角度,分析了BLM预测不同类型金属生物毒性的差异。结果表明:①必需金属的生物毒性大多要弱于非必需金属;金属对陆生生物的毒性顺序大多为:Cu>Cd≈Ni>Zn,而对水生生物的毒性顺序大多为:Cd>Cu>Zn;必需金属Cu和Zn的最大吸收通量(Jmax)数量级大多在10^(-12)~10^(-13) mol/(g·s),而非必需金属Cd、Ni等的Jmax数量级大多在10^(-13)~10^(-14) mol/(g·s)。②三价金属的生物毒性大多强于二价金属;三价金属的Jmax数量级大多在10~14 mol/(cm^(2)·s),一般低于二价金属的Jmax;三价金属的亲和力常数logK值大多在7 L/mol以上,大多高于二价金属的logK值。
From the perspectives of essential/non-essential metals and metal valence states,the differences in the biological toxicity of different types of metals predicted by BLM were analyzed.The results show that,the biological toxicity of essential metals is mostly weaker than that of non-essential metals,the sequence of toxicity of metal to terrestrial organisms is mostly Cu>Cd≈Ni>Zn and the sequence of toxicity to aquatic organisms is mostly Cd>Cu>Zn,the maximum absorption fluxes(Jmax)of the essential metals(Cu and Zn)are mostly in the order of 10^(-12)-10^(-13)mol/(g·s),while the non-essential metals(Cd,Ni,etc.)are mostly in the order of Jmax 10^(-13)-10^(14) mol/(g·s).The biological toxicity of trivalent metals is mostly stronger than that of divalent metals,the Jmax of trivalent metals is mostly in the order of 10^(-14) mol/(cm^(2)·s),which is generally lower than the Jmax of divalent metals and the affinity constant LogK value is mostly above 7 L/mol,which is mostly higher than the LogK value of the divalent metal.
作者
肖皋艺
杨光
XIAO Gaoyi;YANG Guang(College of Energyand Environmental Engineering,Hebei University of Engineering Handan,Hebei 056000;不详)
出处
《工业安全与环保》
2021年第8期91-96,共6页
Industrial Safety and Environmental Protection
基金
国家自然科学基金(41703088)
河北省重点研发计划项目(19273707D)
邯郸市科学技术研究与发展计划项(1723209055-3)。
关键词
必需/非必需金属
金属价态
BLM
生物毒性
essential/non-essential metals
metal valence
BioticLig Model
biological toxicity
