Distribution of phosphorus in sediments from the Changjiang Estuary and its adjacent sea

HE Hui-jun; YU Zhi-gang; YAO Qing-zheng; CHEN Hong-tao; MI Tie-zhu

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HE Hui-jun, YU Zhi-gang, YAO Qing-zheng, CHEN Hong-tao, MI Tie-zhu. Distribution of phosphorus in sediments from the Changjiang Estuary and its adjacent sea[J]. Haiyang Xuebao, 2009, 31(5): 19-30.

Citation:

HE Hui-jun, YU Zhi-gang, YAO Qing-zheng, CHEN Hong-tao, MI Tie-zhu. Distribution of phosphorus in sediments from the Changjiang Estuary and its adjacent sea[J]. Haiyang Xuebao, 2009, 31(5): 19-30.

HE Hui-jun, YU Zhi-gang, YAO Qing-zheng, CHEN Hong-tao, MI Tie-zhu. Distribution of phosphorus in sediments from the Changjiang Estuary and its adjacent sea[J]. Haiyang Xuebao, 2009, 31(5): 19-30.

Citation:

HE Hui-jun, YU Zhi-gang, YAO Qing-zheng, CHEN Hong-tao, MI Tie-zhu. Distribution of phosphorus in sediments from the Changjiang Estuary and its adjacent sea[J]. Haiyang Xuebao, 2009, 31(5): 19-30.

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Distribution of phosphorus in sediments from the Changjiang Estuary and its adjacent sea

1.
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
2.
Key Laboratory of Marine Environment Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China

Received Date: 2008-12-18
Rev Recd Date: 2009-05-11

Abstract

Abstract

Surface sediments were collected from Changjiang Estuary and its adjacent sea in June 2006 and April 2007.The sediments were separated into five fractions via water elutriation.The sediments and the fractioned sediments were analyzed with modified SEDEX to obtain six forms of phosphorus.The results indicated that TP in June 2006 and in April 2007 varied from 12.56 to 19.64 μmol/g and from 8.99 to 19.91 μmol/g,respectively.Detrital P was the major form.Exchangeable P,iron-bound P,organic P,Authigenic P and refractory P had the similar distribution pattern with higher contents appeared just out of the Changjiang Estuary and Hangzhou Bay,while higer detrital P content was found in the lower estuary.The content of different P forms varied by sediments size:organic P,Authigenic P and refractory P were the dominant forms in < 8 μm classes and decreased with the increasing sediment size;detrital P was the main contributor of 32~63 μm and > 63 μm classes.The distributions of P in estuarine sediments were affected mainly by the sediments size and the content of various particulate P in different particle size classes.
- Changjiang Estuary,
- sediments,
- particle size,
- sedimentary phosphorus forms

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References(50)

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