Utilization of activated carbon as an effective replacement for a commercialized three-bed sorbent (Carbopack) to quantitate aromatic hydrocarbons in ambient air.

Autor: Lee YS; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, Republic of Korea., Maitlo HA; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, Republic of Korea., Kim KH; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, Republic of Korea. Electronic address: kkim61@hanyang.ac.kr., Kwon EE; Department of Environment and Energy, Sejong University, Seoul, 05005, Republic of Korea. Electronic address: ekwon74@sejong.ac.kr., Lee MH; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, Republic of Korea., Kim JC; Department of Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-Gu, Seoul, 05029, South Korea. Electronic address: jckim@konkuk.ac.kr., Song HN; ACEN Co., Ltd, Yeongtong-Gu Dukyong Dearo 1556-16, Suwon-Si, Gyeonggi-Do, 16670, Republic of Korea., Szulejko JE; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, Republic of Korea.
Jazyk: angličtina
Zdroj: Environmental research [Environ Res] 2019 Dec; Vol. 179 (Pt A), pp. 108802. Date of Electronic Publication: 2019 Oct 10.
DOI: 10.1016/j.envres.2019.108802
Abstrakt: The potential use of activated carbon (AC) as an inexpensive and effective alternative sorbent material in thermal desorption is presented and validated for the analysis of aromatic volatile organic compounds (VOCs) such as benzene, toluene, m-xylene, and styrene (BTXS) in air. The optimum desorption conditions of an AC sampling tube (2 mg AC bed) were determined and compared with a commercial three-bed (Carbopack; C + B + X) tube sampler as a reference. The AC sampler exhibited good linearity (R 2  > 0.99) and reproducibility (RSE of 2.38 ± 0.21%) for BTXS analysis. The AC tube sampler showed good storability (up to 3 d) and excellent recyclability (up to 50 cycles). An analysis of BTXS in ambient air showed excellent agreement between AC and CBX (bias < 5%). The 1% breakthrough volume values for 2 mg AC, when tested at 100 ppb of benzene as a sole component or in a BTXS mixture, were 10,000 or 5000 L g -1 , respectively. The results of this study support the performance of AC as a suitable medium for sampling VOCs as reliable as high-cost commercial sorbent products.
(Copyright © 2019 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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