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甲基对硫磷溶液的荧光光谱及其特性----

毕琳娜 陈国庆 王俊 颜浩然

引用本文:
Citation:

甲基对硫磷溶液的荧光光谱及其特性----

    作者简介: 毕琳娜(1984- ),女,硕士研究生,现主要从事分子光谱的研究..
    通讯作者: 陈国庆, cgq2098@163.com
  • 基金项目:

    国家八六三高技术研究发展计划资助项目(2007AA10Z353)

  • 中图分类号:

    O433;S482.3

Fluorescence spectra of methyl parathion and its characteristic

    Corresponding author: CHEN Guo-qing, cgq2098@163.com ;
  • CLC number:

    O433;S482.3

  • 摘要: 为了研究甲基对硫磷溶液的荧光光谱及其特性,采用多功能光谱测量系统,对甲基对硫磷标准溶液在紫外光激励下的荧光光谱特性进行了实验研究。利用GAUSSIAN软件与量子力学理论进行了理论分析,获得了其荧光光谱的产生机理以及甲基对硫磷分子的相应跃迁能级差,估算了其中直线型结构的荧光团的电子跃迁能级差,估算值与理论值误差不大。结果表明,在波长为200nm~320nm的紫外光激励下,甲基对硫磷标准溶液产生4个荧光峰,分别位于435nm,467nm,567nm,650nm,最佳激励波长为200nm和295nm。4处荧光峰分别是溶剂丙酮分子中C=O上的n电子跃迁、硝基上的n电子跃迁、甲基对硫磷分子中氧原子与苯环形成的大共轭电子结构跃迁以及P=S上的n电子跃迁共同作用产生。以上结果对食品安全监管等领域检测有机磷农药含量是有帮助的。
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甲基对硫磷溶液的荧光光谱及其特性----

    通讯作者: 陈国庆, cgq2098@163.com
    作者简介: 毕琳娜(1984- ),女,硕士研究生,现主要从事分子光谱的研究.
  • 1. 江南大学理学院, 无锡, 214122
基金项目:  国家八六三高技术研究发展计划资助项目(2007AA10Z353)

摘要: 为了研究甲基对硫磷溶液的荧光光谱及其特性,采用多功能光谱测量系统,对甲基对硫磷标准溶液在紫外光激励下的荧光光谱特性进行了实验研究。利用GAUSSIAN软件与量子力学理论进行了理论分析,获得了其荧光光谱的产生机理以及甲基对硫磷分子的相应跃迁能级差,估算了其中直线型结构的荧光团的电子跃迁能级差,估算值与理论值误差不大。结果表明,在波长为200nm~320nm的紫外光激励下,甲基对硫磷标准溶液产生4个荧光峰,分别位于435nm,467nm,567nm,650nm,最佳激励波长为200nm和295nm。4处荧光峰分别是溶剂丙酮分子中C=O上的n电子跃迁、硝基上的n电子跃迁、甲基对硫磷分子中氧原子与苯环形成的大共轭电子结构跃迁以及P=S上的n电子跃迁共同作用产生。以上结果对食品安全监管等领域检测有机磷农药含量是有帮助的。

English Abstract

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