| 地表水中藻类代谢对pH和含氧量影响分析 |
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| 引用本文： | 沈青.地表水中藻类代谢对pH和含氧量影响分析[J].环境科学与技术,2011(Z2):261-262,286. |
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| 作者姓名： | 沈青 |
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| 作者单位： | 湖北省环境监测中心站 |
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| 摘 要： | 藻类代谢对地表水中含氧量和pH均产生影响。藻类光合作用放出氧气,导致地表水中的含氧量增加。藻类光合作用吸收二氧化碳,影响地表水中碳酸及碳酸盐的平衡,导致地表水中pH偏向碱性。地表水中存在的弱酸及弱酸盐也会影响地表水中pH的变化。在同样的光合作用条件下,如果地表水中碳酸及碳酸盐浓度高,则pH变化小;如果地表水中碳酸及碳酸盐浓度低,则pH变化大。
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| 关 键 词： | 地表水 藻类 含氧量 pH 影响因素 |
Analyses on the Influece of Algae Metabolism on pH and DO in Surface Water |
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| SHEN Qing.Analyses on the Influece of Algae Metabolism on pH and DO in Surface Water[J].Environmental Science and Technology,2011(Z2):261-262,286. |
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| Authors: | SHEN Qing |
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| Institution: | SHEN Qing(Hubei Environmental Monitoring Central Station,Wuhan 430072,China) |
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| Abstract: | The metabolism of algae affects both DO and pH of surface water.The oxygen produced by algae photosynthesis directly increases DO in surface water,while the surface water tends to alkaline since the algae absorb carbon dioxide during the photosynthesis which affects the balance of carbonic acid and carbonate in surface water.Besides,the pH is lessened by the weak acid and its salt in surface water.Under the same photosynthesis conditions,if the concentration of carbonic acid and carbonate increase,the pH will decrease;otherwise,the pH will increase. |
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| Keywords: | surface water algae DO pH influencing factor |
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