Influence of Asian and Western United States urban areas and fires on the atmospheric transport of polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and fluorotelomer alcohols in the Western United States.
Influence of Asian and Western United States urban areas and fires on the atmospheric transport of polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and fluorotelomer alcohols in the Western United States.
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DOI：
10.1021/es702160d
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发表时间：
2008-09-01
影响因子：
11.4
通讯作者：
Simonich, Staci Massey
中科院分区：
文献类型：
--
作者：
Primbs, Toby;Piekarz, Arkadiusz;Wilson, Glenn;Schmedding, David;Higginbotham, Carol;Field, Jennifer;Simonich, Staci Massey
大气测量的半挥发性有机化合物（SOC）在山。学士观测站（MBO），位于俄勒冈州的喀斯喀特山脉，以了解跨太平洋和区域运输的SOC从城市地区。从2004年4月19日至2006年5月13日（n=69），对气相和颗粒相进行了大量空气采样（约644 m3，24小时）;包括2006年春季NASA的INTEX-B活动（n= 34/69）。计算了空气质量返回轨迹，并用于计算源区影响因子（SRIF），即采样空气质量在给定源区停留的时间百分比。颗粒相多环芳烃（PAH）的浓度在MBO增加的空气质量的时间在亚洲的百分比，并结合其他数据，提供了强有力的证据表明，颗粒相多环芳烃从亚洲排放，并进行跨太平洋大气传输到北美。气相多环芳烃和氟调聚物醇（FTOH）的浓度显着增加的空气质量时间的百分比在加州的城市地区，而retene和多氯联苯（PCB）的浓度增加的空气质量时间的百分比在俄勒冈州和区域火灾事件。此外，大气气相多环芳烃、retene和左旋葡聚糖浓度与大气多氯联苯浓度显著相关（p值< 0.001），这表明大气多氯联苯浓度的增加与火灾有关，这是由于土壤和植被中储存的多氯联苯挥发所致。
Atmospheric measurements of semivolatile organic compounds (SOCs) were made at Mt. Bachelor Observatory (MBO), located in Oregon’s Cascade Range, to understand the trans-Pacific and regional transport of SOCs from urban areas. High volume air sampling (~644 m3 for 24 hour periods) of both the gas and particulate phases was conducted from the 19th of April 2004 to the 13th of May 2006 (n=69); including NASA’s INTEX-B campaign in spring 2006 (n= 34 of 69). Air mass back trajectories were calculated and used to calculate source region impact factors (SRIFs), the percentage of time the sampled air mass resided in a given source region. Particulate-phase polycyclic aromatic hydrocarbon (PAH) concentrations at MBO increased with the percentage of air mass time in Asia and, in conjunction with other data, provided strong evidence that particulate-phase PAHs are emitted from Asia and undergo trans-Pacific atmospheric transport to North America. Gas-phase PAH and fluorotelomer alcohol (FTOH) concentrations significantly increased with the percentage of air mass time in California’s urban areas, while retene and polychlorinated biphenyl (PCB) concentrations increased with the percentage of air mass time in Oregon and during regional fire events. In addition, Σgas-phase PAH, retene, and levoglucosan concentrations were significantly correlated (p-value < 0.001) with ΣPCB concentrations, suggesting increased atmospheric PCB concentrations were associated with fires due to the volatilization of stored PCBs from soil and vegetation.
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影响因子：
5
作者：
Simoneit, BRT;Schauer, JJ;Cass, GR
通讯作者：
Cass, GR
影响因子：
2.4
作者：
Garivait, H;Polprasert, C;Reutergardh, LB
通讯作者：
Reutergardh, LB
影响因子：
11.4
作者：
Hageman, Kimberly J.;Simonich, Staci L.;Landers, Dixon H.
通讯作者：
Landers, Dixon H.
影响因子：
4.4
作者：
Bailey, R;Barrie, LA;Muir, DCG
通讯作者：
Muir, DCG
影响因子：
6.3
作者：
Eckhardt, S.;Breivik, K.;Stohl, A.
通讯作者：
Stohl, A.