| Grain-size related nitrogen distribution in southern Yellow Sea surface sediments |
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| 作者姓名： | 吕晓霞 宋金明 袁华茂 李学刚 詹天荣 李宁 高学鲁 石学法 |
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| 作者单位： | [1]InstituteofOceanology,ChineseAcademyofSciences,No7NanhaiRoad,Qingdao266071,China／／CollegeofMarineGeoscience,OceanUniversityofChina,Qingdao266003,China [2]InstituteofOceanology,ChineseAcademyofSciences,No7NanhaiRoad,Qingdao266071,China [3]InstituteofOceanology,ChineseAcademyofSciences,No.7NanhaiRoad,Qingdao266071,China／／TheGraduateSchoolofChineseAcademyofSciences,Beijing100039,China |
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| 基金项目： | This project is supported by the Knowledge Innovation Program of the Chinese Academy of Sciences (No.KZCXI-SW-01-08) and the National Science Foundation for Outstanding Young Scientists in China (No.49925614) |
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| 摘 要： | Forty-eight surface sediments of the southern Yellow Sea are separated into three grain-size fractions. Four forms of extractable nitrogen (nitrogen in ion-exchangeable form (Nie), nitrogen in weak-acid extractable form (Nwa), nitrogen in strong-alkali extractable form (Nsa) and nitrogen in strong-oxidant form (N50))are obtained by the sequential extraction. The results show that the contents and the distributions of the extractable nitrogen in the southern Yellow Sea surface sediments are closely related to sediment grain size. The distributions ofNie, Nso and total nitrogen (TN) present positive correlations with fine particles content, while Nwa and Nsa does not have such correlation. The net contents of all the forms of nitrogen increase with sediment grain size finer.
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| 关 键 词： | 氮 表面沉淀物 黄海 粒度 水体污染 |
| 收稿时间： | 27 August 2004 |
| 修稿时间： | 23 December 2004 |
Grain-size related nitrogen distribution in southern Yellow Sea surface sediments |
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| Lü Xiaoxia,Song Jinming,Yuan Huamao,Li Xuegang,Zhan Tianrong,Li Ning,Gao Xuelu,Shi Xuefa.Grain-size related nitrogen distribution in southern Yellow Sea surface sediments[J].Chinese Journal of Oceanology and Limnology,2005,23(3):306-316. |
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| Authors: | Lü Xiaoxia Song Jinming Yuan Huamao Li Xuegang Zhan Tianrong Li Ning Gao Xuelu Shi Xuefa |
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| Institution: | (1) Institute of Oceanology, Chinese Academy of Sciences, No. 7 Nanhai Road, 266071 Qingdao, China;(2) College of Marine Geoscience, Ocean University of China, 266003 Qingdao, China;(3) The Graduate School of Chinese Academy of Sciences, 100039 Beijing, China |
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| Abstract: | Forty-eight surface sediments of the southern Yellow Sea are separated into three grain-size frac- tions. Four forms of extractable nitrogen (nitrogen in ion-exchangeable form (Nie), nitrogen in weak-acid ex- tractable form (Nwa), nitrogen in strong-alkali extractable form (Nsa) and nitrogen in strong-oxidant form (Nso)) are obtained by the sequential extraction. The results show that the contents and the distributions of the extract- able nitrogen in the southern Yellow Sea surface sediments are closely related to sediment grain size. The distri- butions of Nie, Nso and total nitrogen (TN) present positive correlations with fine particles content, while Nwa and Nsa does not have such correlation. The net contents of all the forms of nitrogen increase with sediment grain size finer. |
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| Keywords: | grain size surface sediment the southern Yellow Sea nitrogen form |
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