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Comparison of Elemental Carbon in Lake Sediments Measured by Three Different Methods and 150-Year Pollution History in Eastern China
Han, YM (Han, Y. M.)[1]; Cao, JJ (Cao, J. J.)[1,5]; Yan, BZ (Yan, B. Z.)[2]; Kenna, TC (Kenna, T. C.)[2]; Jin, ZD (Jin, Z. D.)[1]; Cheng, Y (Cheng, Y.)[3]; Chow, JC (Chow, Judith C.)[4]; An, ZS (An, Z. S.)[1]
2011-06-15
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume45Issue:12Pages:5287-5293
Subtype期刊论文
Abstract

Concentrations of elemental carbon (EC) were measured in a 150 yr sediment record collected from Lake Chaohu in Anhui Province, eastern China, using three different thermal analytical methods: IMPROVE_A thermal optical reflectance (TOR), STN_thermal optical transmittance (TOT), and chemothermal oxidation (CTO). Distribution patterns for EC concentrations are different among the three methods, most likely due to the operational definition of EC and different temperature treatments prescribed for each method. However, similar profiles were found for high-temperature EC fractions among different methods. Historical soot(ToR) (high-temperature EC fractions measured by the IMPROVE_A TOR method) from Lake Chaohu exhibited stable low concentrations prior to the late 1970s and a sharp increase thereafter, corresponding well with the rapid industrialization of China in the last three decades. This may suggest that high-temperature thermal protocols are suitable for differentiating between soot and other carbon fractions. A similar soot(ToR) record was also obtained from Lake Taihu (similar to 200 km away), suggesting a regional source of soot. The ratio of char(ToR) (low-temperature EC fraction measured by the IMPROVE_A TOR method, after correction for pyrolysis) to sootToR in Lake Chaohu shows an overall decreasing trend, consistent with gradual changes in fuel use from wood burning to increasing fossil fuel combustions. Average higher char(ToR)/soot(ToR) was observed in Lake Taihu than in Lake Chaohu in the past 150 years, consistent with the longer and more extensive industrialization around the Taihu region.

DOI10.1021/es103518c
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10240
Collection粉尘与环境研究室
Corresponding AuthorHan, YM (Han, Y. M.)[1]
Affiliation1.SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China;
2.Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, United States;
3.Department of Environmental Science and Technology, Xi’an Jiaotong University, No.28 Xianning West Road, Xi’an 710049, China;
4.Desert Research Institute, 2215 Raggio Parkway, Reno, Nevada 89512, United States;
5.Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, China
Recommended Citation
GB/T 7714
Han, YM ,Cao, JJ ,Yan, BZ ,et al. Comparison of Elemental Carbon in Lake Sediments Measured by Three Different Methods and 150-Year Pollution History in Eastern China[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2011,45(12):5287-5293.
APA Han, YM .,Cao, JJ .,Yan, BZ .,Kenna, TC .,Jin, ZD .,...&An, ZS .(2011).Comparison of Elemental Carbon in Lake Sediments Measured by Three Different Methods and 150-Year Pollution History in Eastern China.ENVIRONMENTAL SCIENCE & TECHNOLOGY,45(12),5287-5293.
MLA Han, YM ,et al."Comparison of Elemental Carbon in Lake Sediments Measured by Three Different Methods and 150-Year Pollution History in Eastern China".ENVIRONMENTAL SCIENCE & TECHNOLOGY 45.12(2011):5287-5293.
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