흡착튜브를 이용한 가스상물질 채취용 펌프의 유량성능 평가방법

• Published in: 한국산업위생학회지 Vol. 24; no. 2; pp. 201 - 207
• Main Authors: 김남희, 송호준, 김기연, 마혜란, 이광용, 정지연, Kim, Nam Hee, Song, Ho June, Kim, Ki Youn, Ma, Hye Lan, Yi, Gwang Yong, Jeong, Jee Yeon
• Format: Journal Article
• Language: Korean
• Published: 2014
• Subjects: ISO; back pressure; pump; flow rate; Adsorbents
• ISSN: 1226-4326

Objectives: Flow rate stability is very important for obtaining reliable measurements. However there is no easily used method for checking whether the flow rate set at the initial stage is sustained during sampling. The purpose of this study was to develop a method to evaluate the flow rate performance of gas sampling pumps with adsorbents commonly used to sample gases. Materials and methods: We tested the back pressure of gas sampling pumps commonly used in Korea with adsorbents such as charcoal and silica tubes and attempted to discover the combination conditions of adsorbents in accordance with back pressure required by ISO standard 13137. Results: We found the combination of sampling adsorbents to be applicable to the pressure drop required by the ISO standard for evaluating flow rate stability under increasing pressure drop and long term (eight-hour) performance. Conclusions: This evaluation method of using a sampling media matrix for checking flow rate stability as proposed by this study could be a highly useful tool for determining the reliability of the performance pumps before sampling.