| 光照和盐度对海水介质中磷化氢转化的影响 |
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| 引用本文： | 秦媛媛,宋秀贤,曹西华,袁涌铨,俞志明. 光照和盐度对海水介质中磷化氢转化的影响[J]. 海洋与湖沼, 2011, 42(4): 482-487 |
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| 作者姓名： | 秦媛媛 宋秀贤 曹西华 袁涌铨 俞志明 |
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| 作者单位： | 中国科学院海洋研究所海洋生态与环境科学重点实验室;中国科学院研究生院;中国科学院海洋研究所海洋生态与环境科学重点实验室;中国科学院海洋研究所海洋生态与环境科学重点实验室;中国科学院海洋研究所海洋生态与环境科学重点实验室;中国科学院海洋研究所海洋生态与环境科学重点实验室 |
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| 基金项目： | 国家自然科学基金项目, 30970522 号; 国家重点基础研究发展计划(973)项目, 2010CB428706 号; 国家自然科学基金项目, 40576058 号; 国家基金委“创新研究群体科学基金”资助项目, 40821004 号 |
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| 摘 要： | 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...
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| 关 键 词： | 磷化氢 转化 光照 盐度 模拟实验 |
| 修稿时间： | 2011-09-10 |
EFFECTS OF LIGHT AND SALINITY ON PHOSPHINE TRANSFORMATION IN SEAWATER |
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| QIN Yuan-Yuan,SONG Xiu-Xian,CAO Xi-Hu,YUAN Yong-Quan and YU Zhi-Ming. EFFECTS OF LIGHT AND SALINITY ON PHOSPHINE TRANSFORMATION IN SEAWATER[J]. Oceanologia Et Limnologia Sinica, 2011, 42(4): 482-487 |
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| Authors: | QIN Yuan-Yuan SONG Xiu-Xian CAO Xi-Hu YUAN Yong-Quan YU Zhi-Ming |
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| Affiliation: | Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Science;Graduate School, Chinese Academy of Science;Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Science;Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Science;Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Science;Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Science |
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| Abstract: | In this study, we carried laboratory experiments to study the effects of light and salinity on phosphine (PH3) transformation in seawater. In a series of simulation experiments, phosphate concentration monitored at changing light and the seawater salinity conditions. The results showed that different light conditions can affect the PH3 transformation in the order of UVC>UVB>daylight>UVA>dark. Light, especially the ultraviolet light, induces O3 production in the air, which then leads to production of free radicals, the latter can probably participate in PH3 transformation. We verified this hypothesis using O3 and sodium percarbonate. In addition, we also found that salinity on PH3 transformation showed opposite effect in natural seawater versus in artificial seawater. Through studying the effects of several transitional metals on PH3 transformation, we conclude that the salinity effect on PH3 transformation in natural seawater probably resulted from solute concentration changes. This study provides further scientific basis to help clarify the function and status of PH3 in oceanic phosphorus cycle. |
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| Keywords: | Phosphine Transformation Light Salinity Simulated experiments |
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