紫外荧光法测定环境空气中的SO2
Study on the Portable Ultraviolet Fluorescence Analyzer for Determining SO2 Concentration in the Ambient Air
冯永超 1胡勇 1龚玲 1彭逸 1王海波1
作者信息
摘要
[目的]采用便携式紫外荧光仪测定环境空气中SO2浓度。[方法]将紫外荧光法应用于室外监测，研究其性能，并与甲醛法用标准气体样品和环境空气监测数据进行比较。[结果]当环境空气SO2浓度小于5μL／m3时，2种方法应采用绝对误差来评价；当环境空气SO2浓度大于5μL／m3时，2种方法有很好的相关性，其相对误差小于10％。[结论]紫外荧光法具有检测灵敏度高、实时性强、检测范围宽和重复性好等优点，可用于测定环境空气中SO 2浓度。
Abstract
Objective] The aim was to determine SO2 concentration in the ambient air by using portable ultraviolet fluorescence analyzer.[Meth-od] The monitoring value from the ultraviolet fluorescence and formaldehyde absorbing methods by standard gas samplings and ambient air was discussed through comparison experiment.[Result] The results showed that the two methods have obvious deviation except through the absolute error evaluation when the concentration of SO2 is less than 5μL/m2 ,while the deviation of two methods was less than 10%when the concentration of SO2 is more than 5 μL/m2.[Conclusion] Ultraviolet fluorescence method has advantages of high sensitivity,real-time,wide detection range and good repeatability,which can be used for determining SO2 concentration in the ambient air.
关键词
环境空气/SO2/紫外荧光法/甲醛法/比对试验Key words
Ambient air/SO2/Ultraviolet fluorescence method/Formaldehyde absorbing/Comparison experiment引用本文复制引用
基金项目
重庆市环保局环保科技项目(环科字2015第14号)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据