Mass and isotopic concentrations of water-insoluble refractory carbon in total suspended particulates at *** Observatory(China)

作     者：Xiangdong Zheng Chengde Shen Guojiang Wan Jie Tang Kexin Liu 

作者机构：Key Laboratory of Atmospheric ChemistryChinese Academy of Meteorological Sciences State Key Laboratory of Isotope Geochronology and GeochemistryGuangzhou Institute of GeochemistryChinese Academy of Sciences State Key Laboratory of Environment GeochemistryInstitute of GeochemistryChinese Academy of Sciences Center of Meteorological SoundingChinese Meteorological Administration State Key Laboratory of Nuclear Physics and Technology and Institute of Heavy Ion PhysicsPeking University 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2015年第13卷第3期

页      面：24-31页

核心收录：

学科分类：07[理学] 08[工学] 070602[理学-大气物理学与大气环境] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0706[理学-大气科学] 

基　　金：supported by the National Natural Sciences Foundation of China(Grant Nos.41175115 40830102 40575013 and 40175032) 

主　　题：Water insoluble refractory carbon (WIRC)Mass concentration813C14CMt. Waliguan (WLG) 

摘      要：Mass concentration and isotopic values δ13C and 14C are presented for the water-insoluble refractory carbon （WIRC） component of total suspended particulates （TSP）, collected weekly during 2003, as well as from October 2005 to May 2006 at the WMO-GAW Mt. Waliguan （WLG） site. The overall average WlRC mass concentration was （1183 ± 120）ng/m3 （n = 79）, while seasonal averages were 2081 ± 1707 （spring）, 454±205 （summer）, 650 ±411 （autumn）, and 1019 ± 703 （winter） ng/m3. Seasonal variations in WIRC mass concentrations were consistent with black carbon measurements from an aethalometer, although WIRC concentrations were typically higher, especially in winter and spring. The δ13C PDB value （-25.3 ± 0.8）%0 determined for WIRC suggests that its sources are C3 biomass or fossil fuel combustion. No seasonal change in δ13C PDB was evident. The average percent Modern Carbon （pMC） for 14C in WIRC for winter and spring was （67.2 ± 7.7）% （n = 29）. Lower pMC values were associated with air masses trans- ported from the area east of WLG, while higher pMC values were associated with air masses from the Tibetan Plateau, southwest of WLG. Elevated pMC values with abnormally high mass concentrations of TSP and WIRC were measured during a dust storm event.