| 水环境中OH自由基的分子探针法测定 |
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| 引用本文： | 杨曦,孔令仁,王连生.水环境中OH自由基的分子探针法测定[J].环境化学,2003,22(5):490-492. |
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| 作者姓名： | 杨曦 孔令仁 王连生 |
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| 作者单位： | 南京大学环境学院,污染控制与资源化国家重点实验室,南京,210093 |
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| 基金项目： | 国家自然科学基金 (编号 :2 0 2 0 70 0 4)，江苏省自然科学基金 (编号 :DK2 0 0 2 41 3 )资助项目 |
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| 摘 要： | 采用水杨酸分析水体中羟基(OH)的分子探针，测定了紫外光照下NO3^-和NO2^-体系中OH的稳态浓度和量子产率，并在此基础上估算了天然水体中OH自由基的生成速率和清除有机污染物的速率。
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| 关 键 词： | 水环境 羟基 水杨酸 分子探针法 水体污染 有机污染物 环境化学 |
DETERMINATION OF HYDROXYL RADICALS IN AQUATIC ENVIRONMENT WITH A NEW MOLECULAR PROBE |
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| YANG Xi,KONG Ling-ren,WANG Lian-sheng.DETERMINATION OF HYDROXYL RADICALS IN AQUATIC ENVIRONMENT WITH A NEW MOLECULAR PROBE[J].Environmental Chemistry,2003,22(5):490-492. |
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| Authors: | YANG Xi KONG Ling-ren WANG Lian-sheng |
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| Abstract: | In this paper,salicylic acid was used as a molecular probe to determine hydroxyl radicals in aquatic system.The steady state concentrations and quantum yields of hydroxyl radicals formed by ultraviolet irradiation of nitrate and nitrite solutions were explored.Formation rate of hydroxyl radicals and removal rate of organic pollutants through oxidation with hydroxyl radical in natural water were estimated on the basis of above results. |
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| Keywords: | reactive oxygen species photochemistry salicylic acid |
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