| 摘要: |
| 通过室内模拟实验, 研究了磷化氢在海水中的转化过程, 分析了光照条件、氧化条件、通入方式等环境因子对磷化氢转化的影响。结果表明, 在日光照射条件下, 磷化氢在海水中可部分转化为磷酸盐, 但转化率相对较低, 转化过程复杂; 环境因子在磷化氢转化过程中起重要作用, 日光照射、紫外光照射、氧化条件等均能促进海水中磷化氢向磷酸盐和总磷的转化, 在紫外光照射条件下检测到磷化氢向磷酸盐的最大转化率为66.6%。本研究对探索磷化氢在海洋环境生物地球化学循环中的作用具有重要意义。
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| 关键词: 磷化氢 磷酸盐 环境因子 紫外光照射 |
| DOI： |
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| 基金项目:国家自然科学基金项目(40576058); 中国科学院知识创新工程项目(KZCX2-YW-208); 国家基金委“创新研究群体科学基金”项目(40821004); 淮海工学院自然科学研究项目(Z2008042) |
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| Effects of environmental factors on the transformation of phosphine in seawater |
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FENG Zhi-hua,SONG Xiu-xian,LI Xiao-jun,YU Hai-yan,YUAN Yong-quan,YU Zhi-ming
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| Abstract: |
| Laboratory experiments were carried out to explore the transformation process of phosphine in seawaterand the effects of environmental factors, such as illumination conditions, oxidation conditions and addition mode.The influences of ultraviolet irradiation, solar irradiation and darkness conditions on the transformation processwere compared. The results indicated that phosphine concentration in the upper atmosphere decreased and PO43?,total phosphorus concentrations in the bottom seawater increased as time went on. The transformation rates of PO43? and total phosphorus after 24 hours were 28.7% and 34.3% respectively. The results also revealed that some environmentalfactors, such as solar irradiation, oxidation conditions and slow addition mode, especially ultraviolet irradiationshould be responsible for the transformation of phosphine to PO43? and total phosphorus.
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| Key words: phosphine phosphate environmental factors ultraviolet irradiation |
