HYDROFLUORIC AND NITRIC-ACID TRANSPORT THROUGH LIPID BILAYER-MEMBRANES
HYDROFLUORIC AND NITRIC-ACID TRANSPORT THROUGH LIPID BILAYER-MEMBRANES
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DOI：
10.1016/0005-2736(81)90071-7
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发表时间：
1981-01-01
期刊：
影响因子：
--
通讯作者：
WALTER, A
中科院分区：
文献类型：
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作者：
GUTKNECHT, J;WALTER, A
采用电导和pH电极相结合的方法研究了HF和HNO3在脂质双层膜中的转运。运输主要通过HF分子和HNO3的非离子扩散发生。膜对HF和HNO3的渗透性为10-4-10-3 cm/s，比对NO3-、F-和H+的渗透性高5-7个数量级。F-主要通过HF的非离子扩散通过生物膜的假说得到了支持。在酸雨的两种主要成分中，HNO3可能比H2SO4毒性更大。
HF and HNO3 transport through lipid bilayer membranes were studied by a combination of electrical conductance and pH electrode techniques. Transport occurred primarily by nonionic diffusion of molecular HF and HNO3. Membrane permeabilities to HF and HNO3 ranged from 10-4-10-3 cm/s, 5-7 orders of magnitude higher than permeabilities to NO3-, F- and H+. The hypothesis that F- transport through biological membranes occurred mainly by nonionic diffusion of HF was supported. Of the 2 principal components of acid rain, HNO3 may be more toxic than H2SO4.