冰晶中双氧水的UV光解

叶招莲; 李萍; 曹长青; 侯惠奇; 张仁熙

环境化学

冰晶中双氧水的UV光解

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叶招莲, 李萍, 曹长青, 侯惠奇, 张仁熙. 冰晶中双氧水的UV光解[J]. 环境化学, 2009, 28(1): 39-43.

引用本文:

叶招莲, 李萍, 曹长青, 侯惠奇, 张仁熙. 冰晶中双氧水的UV光解[J]. 环境化学, 2009, 28(1): 39-43.

YE Zhao-lian, LI Ping, CAO Chang-qing, HOU Hui-qi, ZHANG Ren-xi . PHOTOLYSIS OF HYDROGEN PEROXIDE IN ICE[J]. Environmental Chemistry, 2009, 28(1): 39-43.

Citation:

YE Zhao-lian, LI Ping, CAO Chang-qing, HOU Hui-qi, ZHANG Ren-xi . PHOTOLYSIS OF HYDROGEN PEROXIDE IN ICE[J]. Environmental Chemistry, 2009, 28(1): 39-43.

冰晶中双氧水的UV光解

1.
复旦大学环境科学研究所, 上海, 200433;
2.
江苏技术师范学院, 常州, 213001
基金项目:
国家自然科学基金资助项目(项目编号:20577006)

PHOTOLYSIS OF HYDROGEN PEROXIDE IN ICE

1.
Institute of Environmental Science, Fudan University, Shanghai, 200433, China;
2.
Jiangsu Teacher's University of Technology, Changzhou, 213001, China
Fund Project:

摘要: 本文采用253.7 nm的紫外灯光解冰晶中的双氧水,研究其光解率随光照时间和温度的变化.以及Cl-,SO42-和CO32-对其降解的影响,结果表明,相同条件下三种离子对其影响大小依次为:Cl-SO42-CO32-.对比冰晶和水溶液中双氧水的光解,冰晶中双氧水的光解速率低于水溶液中双氧水的光解速率.紫外-可见光谱(UV-vis)分析其光解产物,没有发现新的物质生成.由此可以认为,冰晶中双氧水主要在冰晶笼子中进行反应,少部分在类似液体层(QLL)中降解.
- 冰晶 /
- 过氧化氯 /
- 光解
Abstract: The photolysis of hydrogen peroxide(H2O2)in ice was investigated with 253.7 nm UV light.We have studied the relationship between photolysis efficiency of H2O2 with irradiation time as well as temperature.The effect of three types of inorganic ions(Cl-,SO42-and CO32-)on H2O2 photolysis rate in ice has also been re-ported,which followed the order: Cl-SO42-CO32-.H2O2 photolysis in ice appeared to be slower than that in aqueous solution at the same condition.No new photolysis products were observed using UV-Vis spectra a-nalysis.On the basis of our experiment,we inferred that most of H2O2 photolysis took place in ice cage,while only small parts occurred in quasi-liquid layer(QLL).
- ice /
- inorganic ion /
- photolysis

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叶招莲, 李萍, 曹长青, 侯惠奇, 张仁熙. 冰晶中双氧水的UV光解[J]. 环境化学, 2009, 28(1): 39-43.

引用本文:

叶招莲, 李萍, 曹长青, 侯惠奇, 张仁熙. 冰晶中双氧水的UV光解[J]. 环境化学, 2009, 28(1): 39-43.

YE Zhao-lian, LI Ping, CAO Chang-qing, HOU Hui-qi, ZHANG Ren-xi . PHOTOLYSIS OF HYDROGEN PEROXIDE IN ICE[J]. Environmental Chemistry, 2009, 28(1): 39-43.

Citation:

YE Zhao-lian, LI Ping, CAO Chang-qing, HOU Hui-qi, ZHANG Ren-xi . PHOTOLYSIS OF HYDROGEN PEROXIDE IN ICE[J]. Environmental Chemistry, 2009, 28(1): 39-43.

冰晶中双氧水的UV光解

1. 复旦大学环境科学研究所, 上海, 200433;
2. 江苏技术师范学院, 常州, 213001

收稿日期: 2008-04-01

基金项目:

国家自然科学基金资助项目(项目编号:20577006)

关键词:

冰晶 /
过氧化氯 /
光解

摘要: 本文采用253.7 nm的紫外灯光解冰晶中的双氧水,研究其光解率随光照时间和温度的变化.以及Cl-,SO42-和CO32-对其降解的影响,结果表明,相同条件下三种离子对其影响大小依次为:Cl-SO42-CO32-.对比冰晶和水溶液中双氧水的光解,冰晶中双氧水的光解速率低于水溶液中双氧水的光解速率.紫外-可见光谱(UV-vis)分析其光解产物,没有发现新的物质生成.由此可以认为,冰晶中双氧水主要在冰晶笼子中进行反应,少部分在类似液体层(QLL)中降解.

English Abstract

PHOTOLYSIS OF HYDROGEN PEROXIDE IN ICE

1. Institute of Environmental Science, Fudan University, Shanghai, 200433, China;
2. Jiangsu Teacher's University of Technology, Changzhou, 213001, China

Received Date: 2008-04-01

Fund Project:

Keywords:

ice /
inorganic ion /
photolysis

Abstract: The photolysis of hydrogen peroxide(H2O2)in ice was investigated with 253.7 nm UV light.We have studied the relationship between photolysis efficiency of H2O2 with irradiation time as well as temperature.The effect of three types of inorganic ions(Cl-,SO42-and CO32-)on H2O2 photolysis rate in ice has also been re-ported,which followed the order: Cl-SO42-CO32-.H2O2 photolysis in ice appeared to be slower than that in aqueous solution at the same condition.No new photolysis products were observed using UV-Vis spectra a-nalysis.On the basis of our experiment,we inferred that most of H2O2 photolysis took place in ice cage,while only small parts occurred in quasi-liquid layer(QLL).

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冰晶中双氧水的UV光解

PHOTOLYSIS OF HYDROGEN PEROXIDE IN ICE

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冰晶中双氧水的UV光解

English Abstract

PHOTOLYSIS OF HYDROGEN PEROXIDE IN ICE

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