Development of a preparation system for the radiocarbon analysis of organic carbon in carbonaceous aerosols in China

被引:22
作者
Zhang, Y. L. [1 ]
Liu, D. [1 ]
Shen, C. D. [2 ]
Ding, P. [2 ]
Zhang, G. [1 ]
机构
[1] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China
[2] Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Isotope Geochronol & Geochem, Guangzhou 510640, Guangdong, Peoples R China
关键词
Radiocarbon; Carbonaceous aerosols; Elemental carbon; Organic carbon; AMS; ELEMENTAL CARBON; C-14; PARTICULATE; GRAPHITE; CLIMATE; SAMPLES; FOSSIL; URBAN;
D O I
10.1016/j.nimb.2010.06.032
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Carbonaceous aerosols comprising a large fraction of elemental carbon (EC) and organic carbon (OC) are considered to affect both global climate and human health Radiocarbon measurements have been proved to be a useful isotopic tracer for distinguishing contemporary and fossil emissions. An optimized system of a two-step thermal preparation system for radiocarbon (C-14) measurement of OC/TC is firstly established in China In this system, OC/TC are converted into carbon dioxide under a pure oxygen now at 340 degrees C/650 degrees C and then reduced to graphite for AMS target using the method of zinc reduction Afterwards, radiocarbon measurements of the targets performed by the NEC Compact AMS System at the Institute of Heavy Ion Physics, Peking University. The measured results for estimated reference martial including HOx I. HOx II and IAEA-C6 are consistent with internationally accepted values The radiocarbon-based source appointment of carbonaceous aerosols in China would be much more convenient and faster with the preparation system developed in this work (C) 2010 Elsevier B V All rights reserved.
引用
收藏
页码:2831 / 2834
页数:4
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