Phosphorus chemical speciation and seasonal variations in surface sediments of the Maowei Sea, northern Beibu Gulf

被引：39
|
作者：
Yang, Bin [1 ,2 ]
Zhou, Jia-Bin [1 ]
Lu, Dong-Liang [1 ]
Dan, Solomon Felix [3 ]
Zhang, Dong [4 ]
Lan, Wen-Lu [5 ]
Kang, Zhen-Jun [1 ,2 ]
Ning, Zhi-Ming [4 ]
Cui, Dong-Yang [6 ]
机构：
[1] Beibu Gulf Univ, Guangxi Key Lab Marine Disaster Beibu Gulf, Qinzhou 535011, Peoples R China
[2] Beibu Gulf Univ, Key Lab Coastal Sci & Engn, Guangxi 535011, Qinzhou, Peoples R China
[3] Ocean Univ China, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Shandong, Peoples R China
[4] Guangxi Univ, Guangxi Lab Study Coral Reefs South China Sea, Nanning 530004, Peoples R China
[5] Marine Environm Monitoring Ctr Guangxi, Beihai 536000, Peoples R China
[6] Harbin Inst Technol Shenzhen, Shenzhen 518055, Peoples R China
来源：
MARINE POLLUTION BULLETIN | 2019年 / 141卷
基金：
中国国家自然科学基金;
关键词：
Phosphorus; Seasonal variation; Bioavailability; Surface sediments; Maowei Sea; EAST CHINA SEA; GEOCHEMICAL CHARACTERISTICS; CHANGJIANG ESTUARY; BIOGENIC ELEMENTS; RIVER; FLUX; BAY; BIOGEOCHEMISTRY; BIOAVAILABILITY; AVAILABILITY;
D O I：
10.1016/j.marpolbul.2019.02.023
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study presents the distribution, seasonal variations and factors influencing phosphorus (P) forms in surface sediments from the Maowei Sea. P forms were measured using the sequential extraction (SEDEX) procedures. Inorganic P (IP) was the predominant chemical form of total P (TP). Fe-bound P (Fe-P) was the main IP form. Sediment particle sizes, organic matter distribution, terrestrial input and aquaculture activity were responsible for the seasonal variations of different forms of P in sediment. In summer, the average proportions of P fractions in TP followed the order of organic P (OP) > Fe-P > authigenic P (Ca-P) > detrital P (DeP) > exchangeable P (Ex-P); in winter, the corresponding order was OP > Fe-P > De-P > Ca-P > Ex-P. The potential bio-available P accounted for 71.1 +/- 4.9% and 70.6 +/- 6.3% of TP in summer and winter, respectively. Sedimentary organic matter mainly came from land-based sources in winter.
引用
收藏
页码：61 / 69
页数：9
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