| 络合剂对燃煤及木材飞灰生物氧化能力的影响 |
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| 引用本文： | 王玉秋,戴树桂,张林,马永民.络合剂对燃煤及木材飞灰生物氧化能力的影响[J].环境科学,1999,20(4):63-66. |
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| 作者姓名： | 王玉秋 戴树桂 张林 马永民 |
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| 作者单位： | 南开大学环境科学系，天津卫生防病中心 |
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| 基金项目： | 北京大学环境与污染控制国家重点联合实验室开放基金 |
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| 摘 要： | 利用脱氧核糖氧化法考察了飞灰颗粒物，包括５种燃煤飞灰及一种燃木飞灰，生物氧化能力以及外加螯合剂的影响。结果证实，不同来源飞灰颗粒物氧化剂产生能力不同，且燃煤飞灰产生方式不同，催化氧化剂产生能力亦不同。
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| 关 键 词： | 燃煤飞灰 燃木飞灰 络合剂 脱氧核糖氧化法 |
| 收稿时间： | 1998/11/18 0:00:00 |
Effects of External Chelators on Capability of BiologicalOxidation by Coal and Wood Combustion Fly Ashes |
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| Wang Yuqiu,Dai Shugui,Zhang Lin and Ma Yongmin.Effects of External Chelators on Capability of BiologicalOxidation by Coal and Wood Combustion Fly Ashes[J].Chinese Journal of Environmental Science,1999,20(4):63-66. |
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| Authors: | Wang Yuqiu Dai Shugui Zhang Lin and Ma Yongmin |
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| Institution: | Department of Environmental Science, Nankai University, Tianjin 300071, China;Department of Environmental Science, Nankai University, Tianjin 300071, China;Department of Environmental Science, Nankai University, Tianjin 300071, China;Tianjin Municipal Sanitation and Diseases Prevention Centre, Tianjin 300011 |
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| Abstract: | By means of deoxyribose oxidation assay the capability of the biological oxidation
generated by fly ashes,including five coalfired fly ashes and one wood combustion fly ash,as
well as effects of external chelators such as diethylenetriaminepentacetic acid
(DTPA),nitrolotriacetate (NTA),ethylenediamine tetraacetic acid (EDTA) and citric acid (CIT),have
been studied.It was confirmed that the capability to generate oxidant from different sources of
fly ashes is dissimilar,moreover coal fly ashes with various kinds of combustion have different
catalysis effect for generation of oxidized products.The generations of oxidant by fly ashes are
strongly dependent on properties of external chelators,DTPA inhibited generation of oxidant,and
NTA promoted oxidation of deoxyribose by all fly ashes,but influence of EDTA on extents of
oxidized products varied,ability to catalyze deoxyribose oxidation by coal combustion fly ash
decreased,while that by wood combustion ehhanced.When CIT was added to the in vitro react
ion mixture,chromogen formation was inhibited in a significant manner in comparison with that
without adding of chelator. |
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| Keywords: | coal combustion fly ash wood combustion fly ash chelator reactive oxygen species deoxyribose assay |
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