新洁尔灭是一种重要的化学除藻剂,为了探讨新洁尔灭的二次污染问题及其对水生生物可能存在的环境风险,本文在模拟生理条件下利用多种光谱技术和分子模拟技术研究了除藻剂新洁尔灭对鲱鱼精子DNA(hs-DNA)的作用机制,探讨了二者的结合特性和作用力类型,研究了新洁尔灭对hs-DNA空间结构的影响.结果表明,新洁尔灭对hs-DNA没有荧光猝灭作用,新洁尔灭对hs-DNA的空间结构也没有显著影响.通过光谱技术和分子模拟,验证了新洁尔灭与hs-DNA是以沟槽作用相结合且二者作用力类型主要为范德华力.该研究从分子光谱学角度验证了新洁尔灭的低毒性,阐明了新洁尔灭与hs-DNA的结合模式和作用力类型,为评价新洁尔灭的二次污染问题提供了参考.
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