期刊论文

Passive sampling incorporating UV method for measuring ozone concentrations in ambient air

中文

安全与环境学报

1009-6094

2004

4

4

13-16

10.3969/j.issn.1009-6094.2004.04.004

湖南农业大学青年基金项目 （ 2 0 0 1-基 2 16）；

本校为第一机构

研究被动采样-UV法测定臭氧浓度.以NaNO2作为诱捕试剂,用被动采样器吸收O3,然后在紫外分光光度计上进行测定.通过测定所生成的NO-3浓度,间接计算出臭氧浓度.结果表明,测得臭氧浓度范围在20～100 μg/m3,NO-3浓度线性范围在0～0.6 mmol/L.在测定NO-3浓度时,NO-2会造成很大的干扰,但在实验中,NO-2浓度在0～0.8 mmol/L,氨基磺酸都能有效地去除其干扰.该方法是简单、灵敏、可靠的测定环境空气中臭氧浓度的良好方法.

The present paper aims at introducing the passive sampling incorporating UV method for measuring ozone concentrations in ambient air. It is a common sense that sodium nitrite can be used for measuring the performance of an ozone passive sampler as a trapping reagent, which can in turn be used by UV method. What the passive sampling has to measure is the daily average ozone concentration. Our measuring results show that the extent of measured ozone concentration is from 20 to 100 μg/m~3 and the linear extent of nitrate concentration is from 0 t...