Geochemical characteristics of phosphorus in surface sediments of two major Chinese mariculture areas: The Laizhou Bay and the coastal waters of the Zhangzi Island

MARINE POLLUTION BULLETIN

卷:83

Article

Zhuang, Wen^1,2,3  Gao, Xuelu¹  Zhang, Yong¹  Xing, Qianguo¹  Tosi, Luigi⁴  Qin, Song¹ 

[1] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remedia, Yantai 264003, Shandong, Peoples R China

[2] Zaozhuang Univ, Coll City & Architect Engn, Zaozhuang 277160, Shandong, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] CNR, Inst Marine Sci, I-30122 Venice, Italy

关键词: Sequential extraction;    Surface sediment;    Phosphorus fractionation;    Geochemical characteristics;    Marine aquaculture area;    China;   

DOI  :  10.1016/j.marpolbul.2014.03.040

来源: Elsevier

【 摘 要 】

Phosphorus (P) in surface sediments of the Laizhou Bay (LB) and the coastal waters around the Zhangzi Island (ZI) was analyzed. Six forms of P were separated exchangeable or loosely sorbed P (Ads-P), aluminum-bound P (Al-P), iron-bound P (Fe-P), authigenic apatite plus CaCO3-bound P plus biogenic apatite (Ca-P), detrital apatite plus other inorganic P (De-P) and organic P (OP). The average contents of P in the LB were in the order: De-P > OP > Ca-P > Fe-P > Ads-P > Al-P; in the ZI, the corresponding order was DeP> OP > Fe-P> Ca-P > Ads-P > Al-P. Due to the high nutrient loadings from the surrounding rivers, TP contents in sediments of the LB were higher than in those of the ZI. The potential bio-available P (Ads-P and OP) accounted for 14.7% and 24.2% of TP in sediments of the LB and the ZI, respectively. (C) 2014 Elsevier Ltd. All rights reserved.

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