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 | |
发表期刊 | ENVIRONMENTAL SCIENCE & TECHNOLOGY |
卷号 | 45期号:12页码:5287-5293 |
文章类型 | 期刊论文 |
摘要 | 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. |
DOI | 10.1021/es103518c |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/10240 |
专题 | 粉尘与环境研究室 |
通讯作者 | Han, YM (Han, Y. M.)[1] |
作者单位 | 1.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 |
推荐引用方式 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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Comparison of Elemen(1362KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 请求全文 |
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