为揭示重金属存在条件下沉积物(生物膜)吸附阿特拉津( atrazine,AT)的复合污染规律,通过编程研究筛选优化沉积物吸附AT多元回归吸附模型(atrazine-multiple regression adsorption model,ATMRAM),以定性变量的方式将共存的Cu2(外因)引入模型中,建立包含Cu2+影响的沉积物吸附ATCu2+-MRAM.经分析发现,Cu2的存在会抑制AT在沉积物上的吸附,且Cu2+质量浓度越大其抑制作用越强,Cu2+质量浓度为75 mg/L时的抑制程度比15 mg/L时的抑制程度提高1倍以上；Cu2+对沉积物组分(铁氧化物和有机质)的吸附能力产生一定影响,会使各组分的吸附能力减弱8.75％～19.40％.%In order to reveal characteristic of atrazine (AT) adsorption onto the surficial sediments (the natural surficial coating samples) in the copper/AT composite contamination system, Cu2 + ( external) as a qualitative variable was introduced into the multiple regression adsorption model (MRAM) , and a new AT-Cu2+ -MRAM was developed. It is found that copper caused antagonistic effect on AT adsorption, the inhibition is generally enhanced with the increase of copper levels, and the inhibition with Cu2+ present at level of 75 mg/L is one time more than that with Cu2 + present at level of 15 mg/L. Also, Cu2+ can affect the AT adsorption onto the main components ( such as Fe oxides and organic materials) in surficial sediments (the natural surficial coating samples) , decreasing the AT adsorption onto the main components by 8. 75% ~ 19. 40%.
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