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通过室内模拟实验,研究了光照和盐度对海水介质中磷化氢转化的影响。结果表明,不同光照条件下磷化氢转化率有明显差异,按对磷化氢转化促进作用由大到小排列依次为:UVC>UVB>日光>UVA>避光条件,单位辐照强度的UVC比UVB更能促进磷化氢的转化。在实验体系中加入臭氧、过碳酸钠的实验进一步验证自由基反应对磷化氢转化有促进作用。另外,实验结果显示,天然海水与人工海水盐度变化对磷化氢转化影响呈相反趋势,通过考察几种过渡金属对磷化氢转化的影响,初步验证了天然海水中的过渡金属等物质对磷化氢的转化具有一定的促进作用。本文的研究结果将为进一步揭示磷化氢在海洋循环中的作用和地位提供科学依据。
Through indoor simulation experiments, the effects of light and salinity on phosphine conversion in seawater media were studied. The results showed that there were significant differences in the conversion of phosphine under different light conditions. The order of promoting phosphine conversion was as follows: UVC> UVB> sunlight> UVA> dark conditions, unit intensity of UVC More than UVB promote the conversion of phosphine. Ozone and sodium percarbonate were added into the experimental system to further verify that the radical reaction promoted the conversion of phosphine. In addition, the experimental results show that the changes of natural saltwater and artificial sea salinity have an opposite trend on the conversion of phosphine. By examining the effects of several transition metals on the conversion of phosphine, preliminary studies have verified that transitional metals and other substances in natural seawater Phosphine conversion has a certain role in promoting. The results of this paper will provide a scientific basis for further revealing the role and status of phosphine in the oceanic cycle.