『Abstract
This paper characterizes the distribution of phosphorus fractions
and matrix-bound phosphine (MBP) in coastal surface sediments
of the Southwest Yellow Sea from 2006 to 2007. Total phosphorus
(TP), inorganic phosphorus (IP) and organic phosphorus (OP) concentrations
(mg kg-1) range from 278±3 to 768±15, 160±1 to 653±27,
and 3.42±0.05 and 267±22, respectively. MBP is a small portion
of TP with values of 0.69±0.06 to 179±29 ng kg-1. Phosphorus
fractions and MBP are influenced strongly by riverine input and
hydrodynamic conditions. High TP and MBP are found in the old
Yellow River mouth and the Yangtze River mouth. OP and MBP are
strongly negatively correlated to mean particle size. Significant
positive correlations are found between MBP and IP and OM, suggesting
that MBP production may be the microbially intermediated transformation
of IP.
Keywords: Phosphorus fractions; MBP; Coastal zone; Sediments;
Southwest Yellow Sea』
1. Introduction
2. Experimental
2.1. Study area and sampling procedures
2.2. Determination of phosphorus fractions
2.3. Determination of MBP
2.4. Determination of organic matter and particle size
2.5. Data analysis
3. Results and discussion
3.1. Distribution of TP, IP, OP and MBP
3.1.1. TP in coastal surface sediments of the Southwest Yellow
Sea
3.1.2. IP in coastal surface sediments of the Southwest Yellow
Sea
3.1.3. OP in coastal surface sediments of the Southwest Yellow
Sea
3.1.4. MBP in coastal surface sediments of the Southwest Yellow
Sea
3.2. Effects of riverine input and hydrodynamic conditions on
phosphorus distribution
3.3. Effects of mean particle size and OM on phosphorus distribution
3.4. Potential precursors of MBP production
4. Conclusions
Acknowledgements
References