|
|||||
|
|
| 浙江近岸海域表层沉积物中氮的存在形态及其含量的分布特征 | |
| 引用本文： | 王益鸣,吴烨飞,王键,郑爱榕.浙江近岸海域表层沉积物中氮的存在形态及其含量的分布特征[J].台湾海峡,2012,31(3):353-361. |
| 作者姓名： | 王益鸣 吴烨飞 王键 郑爱榕 |
| 作者单位： | 1. 浙江省舟山海洋生态环境监测站,浙江舟山,316000 2. 厦门大学海洋学系、福建省高校海洋化学及应用技术重点实验室,福建厦门,361005 3. 福建海洋研究所,福建厦门,361012 |
| 基金项目： | 国家环保部公益科研专项资助项目，浙江省环保厅科研专项资助项目 |
| 摘 要： | 运用分相浸取法分析了浙江近岸海域60个站位的表层沉积物(0～2 cm)中各形态氮的含量和分布.研究结果表明,表层沉积物中总氮(TN)含量为214.66～861.44 mg/kg,均值为580.52mg/kg,位于浅水区的长江口、杭州湾和浙江沿岸的TN含量低于东部远岸海域;可转化态氮(TTN)含量只占总氮的3.06%～37.24%,有机态和硫化物结合态氮(OSF-N)是沉积物中可转化态氮的主要赋存形态,非转化态氮(NTN)是浙江近岸海域表层沉积物中的优势形态.各站位沉积物中氮在不同提取相中的含量差异较大,与沉积物的陆源输入、沉积物重金属含量、粒径分布及沉积海域的水动力条件等因素有关. |
| 关 键 词： | 海洋化学 氮 形态 分布特征 沉积物 浙江近岸海域 |
Nitrogen forms and their concentration distribution in surface sediments of Zhejiang offshore |
|
| WANG Yi-ming , WU Ye-fei , WANG Jian , ZHENG Ai-rong.Nitrogen forms and their concentration distribution in surface sediments of Zhejiang offshore[J].Journal of Oceanography In Taiwan Strait,2012,31(3):353-361. | |
| Authors: | WANG Yi-ming WU Ye-fei WANG Jian ZHENG Ai-rong |
| Institution: | 1.Zhejiang Provincial Zhoushan Marine Ecological Environmental Monitoring Station,Zhoushan 316000,China; 2.Department of Oceanography and Fujian Universities Marine Chemistry and Applied Technology Key Laboratory, Xiamen University,Xiamen 361005,China;3.Fujian Institute of Oceanography,Xiamen 361012,China) |
| Abstract: | Different forms of nitrogen in surface sediments of Zhejiang offshore were studied with sequential extraction method.The result show that total nitrogen concentration in offshore surface sediments of Zhejiang ranged from 214.66 to 861.44 mg/kg with an average 580.52 mg/kg,and the concentration of TN was found higher in the eastern offshore of Zhejiang than Changjiang Estuary,Hangzhou Bay and Zhejiang coastal area.Transferable nitrogen,accounting for least part of total nitrogen,varied from 3.06% to 37.24%.Organic matter-sulfide form（OSF） is the dominant form of transferable nitrogen while non-transferable form is the dominant form in the surface sediments.Distribution of nitrogen forms is controlled by environmental factors,such as terrigenous inputs,grain size,heavy metal contents in surface sediments and hydro-dynamics. |
| Keywords: | marine chemistry nitrogen form distribution characteristic sediment Zhejiang offshore |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |