δ13C VALUES IN SIZE-SEGREGATED ATMOSPHERIC CARBONACEOUS AEROSOLS AT A RURAL SITE IN LITHUANIA

被引:14
|
作者
Garbaras, A. [1 ]
Rimselyte, I. [1 ]
Kvietkus, K. [1 ]
Remeikis, V. [1 ]
机构
[1] Inst Phys, LT-02300 Vilnius, Lithuania
来源
LITHUANIAN JOURNAL OF PHYSICS | 2009年 / 49卷 / 02期
关键词
carbon isotopes; carbonaceous aerosols; size distribution of aerosol particles; composition; delta C-13; source apportionment; PEARL RIVER-DELTA; CHEMICAL-COMPOSITION; STABLE CARBON; ELEMENTAL CARBON; PARTICLES; URBAN;
D O I
10.3952/lithjphys.49202
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The investigations of the carbon isotopic ratio in different size aerosol particles at the Rugsteliskis Integrated Monitoring Station (IMS) at the rural site (Lithuania) during 10-24 July 2008 are presented. Total carbon (TC) concentrations ranged from 0.06 to 0.35 mu g m(-3) and those of elemental carbon (EA) from 0.02 to 0.15 mu g m(-3) in accumulation mode, as well as from 0.06 to 0.14 mu g m(-3) and from 0.02 to 0.06 mu g m(-3) in coarse mode of aerosol particles, respectively. Organic matter (OM) concentration ranged from 1.0 to 25.4 mu g m(-3), with the average value of 5.6 mu g m(-3). Carbon isotopic ratios relative to standard for TC differ significantly in accumulation and coarse modes (-28 and -24%o, respectively) and indicate a different origin of size-segregated aerosol particles. Almost constant organic carbon isotopic ratio (-31.8%a) indicates that OM originates from local vegetation. Organic matter concentrations and the carbon isotopic ratio measurements in the size-segregated aerosol particles allow identifying sources of aerosol particles.
引用
收藏
页码:229 / 236
页数:8
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