|
| 长江流域沉积物中黑碳分布及其与多环芳烃的相关性研究 |
| Distribution of Black Carbon in the Sediments from the Yangtze River and Their Correlations with Polycyclic Aromatic Hydrocarbons |
| 投稿时间：2014-05-26 修订日期：2014-07-23 |
| DOI：10.14050/j.cnki.1672-9250.2015.02.004 |
| 中文关键词: 长江;沉积物;黑碳;多环芳烃 |
| 英文关键词: The Yangtze River;sediment;black carbon;polycyclic aromatic hydrocarbon |
| 基金项目:国家自然科学基金(41076052),国家重点基础研究发展计划("973"计划)项目(2011CB409801)。 |
| 作者 | 单位 | | 黄亮1,2, 张国森3 | 1. 九江学院, 化学与环境工程学院, 江西九江 332005
2. 华东师范大学, 资源与环境科学学院, 上海 200062
3. 华东师范大学, 河口海岸国家重点实验室, 上海 200062 |
|
| 摘要点击次数: 656 |
| 全文下载次数: 0 |
| 中文摘要: |
| 本文采用CTO-375法测定了长江流域主流及直流20个表层沉积物中黑碳的含量,探讨了沉积物中黑碳与粒度、总有机碳以及多环芳烃之间的关系。结果表明,长江流域沉积物中黑碳的含量范围在0.22~1.89 mg/g之间,与粘土、粉砂及砂含量之间的相关性并不明显,说明粒度组成并不是控制BC分布的主要因素。BC与TOC之间的显著正相关性,表明BC与TOC有相似的来源,如人类活动、土壤流失。沉积物中BC与PAHs有较好的相关性,表明二者之间有相似的来源,同时也表明PAHs在研究区域沉积物中吸附主要由BC控制,这为研究多环芳烃在长江流域的环境归趋与影响因素等提供了新的信息。 |
| 英文摘要: |
| Concentrations of black carbon (BC) in the sediments from the main stream and the tributary of the Yangtze River were determined with CTO-375 method. Meanwhile, total organic carbon (TOC) contents, grain size, concentrations of PAHs in the sediments were also measured. BC contents ranging from 0.22 to 1.86 mg/g, are found insignificant with clay, silt or sand contents, suggesting that grain composition is not primary factor influencing the distribution of BC. Significant relation between BC and TOC indicates that they are from similar sources, e.g. soil erosions and hunman activities. In addition, a good correlation between BC and PAHs in the sediments is proved due to similar soureces, suggesting that the sorption of PAHs in sediments is also controlled by BC, which provides new knowledge on fate of PAHs of the Yangtze River. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
