Song Sang-Keun, Shon Zang-Ho, Kim Yoo-Keun, Kim Cheol-Hee, Yoo Su-Young, Park Sang-Hyun
School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332-0340, USA.
Environ Monit Assess. 2009 Oct;157(1-4):259-75. doi: 10.1007/s10661-008-0533-x. Epub 2008 Oct 11.
In this study, the environmental behavior of malodor pollutants (MPs) [including reduced sulfur compounds (RSCs)] and aromatic volatile organic compounds (AVOCs) were investigated around urban valley areas during several field campaigns (February through December 2006). The MPs measured in the study area include the RSCs (H(2)S, CH(3)SH, DMS, and DMDS), ammonia (NH(3)), and styrene (STY); the AVOCs include benzene (BEN), toluene (TOL), ethylbenzene (EB), m,p-xylene (MPX), and o-xylene (OX). The variation of most MP concentrations (except for DMDS) was found to be larger than that of AVOCs. It was found that STY (2,346 +/- 4,867 ppbv) was the most dominant MP followed by NH(3) (447 +/- 285), CH(3)SH (16 +/- 41), and the others (<8). The magnitude of AVOCs was found in the following descending order: TOL (1.4 +/- 2.2 ppbv), EB (1.0 +/- 2.1), MPX (0.9 +/- 2.0), and the others (<0.8). The concentration levels of most MPs on industrial (I) and downwind (D) sites were up to an order of magnitude higher than those at non-industrial (N) and upwind (U) sites. For most AVOCs, the former was ~3 times higher than the latter. For malodor intensity in RSCs, CH(3)SH was the dominant contributor. The concentration difference in target compounds between the sites/periods is likely to be caused by the combined effects such as emission sources, geographical features (e.g., semi-closed topography), and meteorological conditions (e.g., wind directions) in and outside the urban valley.
在本研究中，在几次实地考察期间（2006年2月至12月），对城市山谷地区周围恶臭污染物（MPs）[包括还原性硫化合物（RSCs）]和芳香族挥发性有机化合物（AVOCs）的环境行为进行了调查。研究区域内测量的MPs包括RSCs（H₂S、CH₃SH、DMS和DMDS）、氨（NH₃）和苯乙烯（STY）；AVOCs包括苯（BEN）、甲苯（TOL）、乙苯（EB）、间/对二甲苯（MPX）和邻二甲苯（OX）。发现大多数MP浓度（除DMDS外）的变化大于AVOCs。发现STY（2346±4867 ppbv）是最主要的MP，其次是NH₃（447±285）、CH₃SH（16±41），其他物质（<8）。AVOCs的含量按以下降序排列：TOL（1.4±2.2 ppbv）、EB（1.0±2.1）、MPX（0.9±2.0），其他物质（<0.8）。大多数MPs在工业（I）和下风（D）站点的浓度水平比非工业（N）和上风（U）站点高出一个数量级。对于大多数AVOCs，前者比后者高约3倍。对于RSCs中的恶臭强度，CH₃SH是主要贡献者。站点/时间段之间目标化合物的浓度差异可能是由城市山谷内外的排放源、地理特征（如半封闭地形）和气象条件（如风向）等综合作用引起的。
