DETERMINATION OF •OH GENERATED IN COPPER ION CATALYZED FENTON REACTION BY TEREPHTHALATE

Huai Qing; Li Jiuqiang; Fang Xingwang

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DETERMINATION OF •OH GENERATED IN COPPER ION CATALYZED FENTON REACTION BY TEREPHTHALATE

更新时间：2023-04-18

- DETERMINATION OF •OH GENERATED IN COPPER ION CATALYZED FENTON REACTION BY TEREPHTHALATE
- Journal of Radiation Research and Radiation Processing Vol. 16, Issue 4, Pages: 193-197(1998)
- 作者机构：
  
  1.北京大学技术物理系　北京　100871
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(29371003)
- DOI：
  CLC：
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Huai Qing, Li Jiuqiang, Fang Xingwang. DETERMINATION OF •OH GENERATED IN COPPER ION CATALYZED FENTON REACTION BY TEREPHTHALATE. [J]. Journal of Radiation Research and Radiation Processing 16(4):193-197(1998)
DOI：

Huai Qing, Li Jiuqiang, Fang Xingwang. DETERMINATION OF •OH GENERATED IN COPPER ION CATALYZED FENTON REACTION BY TEREPHTHALATE. [J]. Journal of Radiation Research and Radiation Processing 16(4):193-197(1998) DOI：

摘要

研究了剂量率对对苯二甲酸剂量计的影响和该剂量计用于测定铜催化的类Fenton反应产生羟自由基的速率的可行性。羟自由基与对苯二甲酸（TA）加成生成的自由基被O,2,氧化成具有很强荧光的稳定产物羟基对苯二甲酸（HOTA）。在很广的剂量率范围内（8.2×10,-3,～1.6Gys,-1,）, G（HOTA）恒定。Cu,2+,的存在使G（HOTA）降低。但当[Cu,2+,]≤[TA],/10时，G（HOTA）不随[Cu,2+,]变化而变化，因此，对苯二甲酸剂量计可用来测定铜催化的类Fenton反应产生的羟自由基。

Abstract

The effect of dose rate on the radiation chemical yield of hydroxyterephthalate (HOTA) in the radiolysis of aerated terephthalate (TA) aqueous solution has been investigated,and the generation of •OH by copper ion catalyzed Fenton reaction has been evaluated with the help of TA. No significant difference in the G (HOTA) was observed at dose rate ranging from 8.2×10,-3, to 1.6Gy s,-1,. The presence of Cu,2+, at concentration less than 1/10 of [TA] lowers the G (HOTA) to 0.53, however G (HOTA) does not change with [Cu,2+,] added. As indicated by the formation of HOTA,the "•OH" generated by the Fenton-type reaction catalyzed by copper ion is different from that generated radiolytic,the former is rather localized and therefore difficult to be scavenged by TA.

关键词

对苯二甲酸剂量计类Fenton反应羟自由基

Keywords

Terephthalate dosimeterFenton-type reactionhydroxyl radical

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