수산화바륨을 이용한 이산화탄소 확산측정법의 개발 및 평가 (Development and Evaluation of a Carbon Dioxide Diffusive Sampling Method using Barium Hydroxide)

서지정보

· 발행기관 : 한국대기환경학회
· 수록지 정보 : 한국대기환경학회지 / 29권 / 1호 / 56 ~ 63페이지
· 저자명 : 임봉빈

초록

This study was aimed at developing and evaluating a diffusive sampling method using a barium hydroxide solution as an absorbent for measuring carbon dioxide (CO2) in ambient air. The collected CO2 concentration was calculated by the change of conductivity resulted in the reaction of CO32- and Ba2+ in aqueous solution. The sampling rate for the diffusive sampler was determined 0.218 mL/min, as obtained from the slope of the linear correlation between the CO2 mass collected by the diffusive sampler and the time-weighted CO2 concentration with the active sampling method. The unexposed blank sampler sealed in aluminium foil-polyethylene laminated packets has remained stable during at least one-month storage period. A good correlation was observed between the diffusive sampler and active sampler with a coefficient of determination of 0.956. This diffusive sampler would be suitable for the indoor CO2 concentration monitoring.

영어초록

This study was aimed at developing and evaluating a diffusive sampling method using a barium hydroxide solution as an absorbent for measuring carbon dioxide (CO2) in ambient air. The collected CO2 concentration was calculated by the change of conductivity resulted in the reaction of CO32- and Ba2+ in aqueous solution. The sampling rate for the diffusive sampler was determined 0.218 mL/min, as obtained from the slope of the linear correlation between the CO2 mass collected by the diffusive sampler and the time-weighted CO2 concentration with the active sampling method. The unexposed blank sampler sealed in aluminium foil-polyethylene laminated packets has remained stable during at least one-month storage period. A good correlation was observed between the diffusive sampler and active sampler with a coefficient of determination of 0.956. This diffusive sampler would be suitable for the indoor CO2 concentration monitoring.

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