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Airborne volatile aromatic hydrocarbons at an urban monitoring station in Korea from 2013 to 2015

机译:2013年至2015年韩国城市监测站中的机载挥发性芳香烃

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摘要

The concentrations of C6-C10volatile aromatic hydrocarbons (AHCs) in air were measured at an urban air quality monitoring station in Jong-Ro, Seoul, Korea, between 2013 and 2015. Their temporal patterns (e.g., diurnal, intraweek, daily) were assessed individually and collectively as groups of benzene, toluene, ethylbenzene, styrene, and xylene (BTESX); total aliphatic hydrocarbon (TALHC: C2-C12); total aromatic hydrocarbon (TARHC: C6-C10); and total hydrocarbon (THC: C2-C12). The highest mean AHC concentrations over the 3-year study (in ppb (v/v)) were observed for toluene (6.0 ± 4.3), followed by the xylenes (1.5 ± 1.3), ethylbenzene (0.85 ± 0.93), benzene (0.73 ± 0.77), and styrene (0.16 ± 0.30) nL/L. The mean ppbC ((v/v), nL∙atm∙CL∙atm) values for BTESX, TALHC, TARHC, and THC were 65.8, 113, 77.7, and 191 ppbC, respectively. For most AHC species (e.g., toluene, styrene, and BTESX), only weak seasonal trends were observed in contrast to temporally varying species like nitric oxide (NO) (e.g., 26.3 ppb (January–February) vs. 8.5 ppb (July–August) during weekdays in 2013). Furthermore, toluene and NO concentrations were much higher (up to a factor 3) on weekdays than on Sunday for most weeks. This might reflect reduced anthropogenic activities on Sunday.
机译:在2013年至2015年之间,在韩国首尔钟路的城市空气质量监测站测量了空气中C6-C10挥发性芳香烃(AHC)的浓度。评估了它们的时间分布(例如,昼夜,周内,每日)以苯,甲苯,乙苯,苯乙烯和二甲苯(BTESX)的形式单独或共同总脂肪烃(TALHC:C2-C12);总芳烃(TARHC:C6-C10);和总烃(THC:C2-C12)。在三年的研究中,观察到甲苯的平均AHC浓度最高(以ppb(v / v)为单位)(6.0±±4.3),其次是二甲苯(1.5±±1.3),乙苯(0.85±±0.93),苯(0.73)。 (±±0.77)和苯乙烯(0.16±±0.30)nL / L。 BTESX,TALHC,TARHC和THC的平均ppbC((v / v),nL∙atm∙C / nL∙atm)分别为65.8、113、77.7和191 ppbC。对于大多数AHC物种(例如,甲苯,苯乙烯和BTESX),与时态变化的物种(如一氧化二氮(NO),例如26.3 ppb(一月至二月)对8.5 ppb(七月至2013年8月)。此外,在大多数工作日中,工作日中的甲苯和NO浓度要比周日高得多(最高为3倍)。这可能反映出周日的人为活动减少。

著录项

  • 来源
    《Journal of Environmental Management》 |2018年第1期|525-538|共14页
  • 作者单位

    Department of Civil and Environmental Engineering, Hanyang University;

    Department of Civil and Environmental Engineering, Hanyang University;

    Department of Civil and Environmental Engineering, Hanyang University;

    Department of Chemical, Medical and Environmental Science, National Physical Laboratory;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Benzene; Toluene; Air pollution; Urban; Seoul;

    机译:苯;甲苯;空气污染;城市;首尔;
  • 入库时间 2022-08-17 13:31:54

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