Development of a Passive Sampling Device Based on Nitrogen Dioxide Absorption Property using Liquid Droplet as a Collection Interface.
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概要
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The droplet method is unique sampling procedure utilizing a droplet which containing a reagent solution, which made at the end of the stainless-steel pipe. This method is able to sampling various soluble substances, which needs suitable trapping reagent. Most of the interfering ions and species did not interfere in the determination. We investigated to obtain the best condition to the droplet method; reagent delivery rate, the size of the end of the pipe, effects of wind velocity and humidity were examined in the wind-tunnel method and nitrogen dioxide (NO<SUB>2</SUB>) was used as a test gas. Reagent solution was distilled water contained 3% triethanolamine. Satisfactory result was obtained and the detection limit for NO<SUB>2</SUB> is 5 ppb (C. V: 5-20%). The results were satisfactory when compared with a reference method. This droplet method was applicable to the measurement of NO<SUB>2</SUB> in air samples.
- 社団法人 大気環境学会の論文
社団法人 大気環境学会 | 論文
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