Distribution characteristics of matrix-bound phosphine along the coast of China and possible environmental controls
Distribution characteristics of matrix-bound phosphine along the coast of China and possible environmental controls
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中国沿海基质结合磷的分布特征及可能的环境控制
DOI：
10.1016/j.chemosphere.2008.06.018
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发表时间：
2008-09-01
期刊：
影响因子：
8.8
通讯作者：
Yu, Zhiming
中科院分区：
文献类型：
--
作者：
Feng, Zhihua;Song, Xiuxian;Yu, Zhiming
报道了2006年中国沿岸37个站位表层沉积物中基质结合磷化氢的浓度。所有样品中均检出MBP，平均浓度为6.30 ng kg(-1)干重。MBP的分布具有一定的空间变异特征，近岸站位MBP浓度较高。北黄海、南黄海、东中国海北部、东中国海南部和南中国海的MBP平均浓度分别为5.57±3.78、3.78±2.81、5.27±3.07、5.48±4.05和13.52±7.86 ng kg(-1)dw。分别进行了分析。研究了MBP与沉积环境特征(沉积物类型、粒度、磷、有机质和氧化还原电位)以及水环境特征(温度、盐度、深度和水动力)等影响因素的相关性。结果表明，MBP受到总磷(TP)、有机磷(OP)、有机碳(OC)、颗粒大小和流体动力学等多种因素的强烈影响，这不仅为MBP的分布特征提供了合理的解释，也为磷化氢来源于OP分解的观点提供了证据。这项工作是首次对中国沿岸沉积物中磷的分布及其与环境因素的关系进行了全面的研究，这将有助于更好地了解该海域的磷(P)生物地球化学循环。(C)2008爱思唯尔有限公司。保留所有权利。
Matrix-bound phosphine (MBP) concentrations in surface sediments collected from 37 stations along the coast of China in 2006 are reported. MBP was found in all samples and the average concentration was 6.30 ng kg(-1) dry weight (dw). The distribution of MBP showed certain spatial variation characteristics with high MBP concentrations at stations near to the coast. The average concentrations of MBP in the northern Yellow Sea (NYS), the southern Yellow Sea (SYS), the northern area of East China Sea (NECS), the southern area of East China Sea (SECS), and South China Sea (SCS) were 5.57 +/- 3.78, 3.78 +/- 2.81, 5.27 +/- 3.07, 5.48 +/- 4.05 and 13.52 +/- 7.86 ng kg(-1) dw. respectively. The correlations between MBP and influencing factors, such as the sedimentary environmental characteristics (sediment type, the grain size, contents of phosphorous, organic matters and redox potential) and the aquatic environmental characteristics (temperature, salinity, depth and hydrodynamics) were studied. The results indicated that MBP was strongly influenced by various factors, such as total phosphorus (TP), organic phosphorus (OP), organic carbon (OC), the grain size and hydrodynamics, all of which not only offered reasonable interpretations for the distribution characteristics of MBP but also provided evidence to support the viewpoint that phosphine originated from OP decomposition. This work is the first comprehensive study of the distribution of MBP along the coast of China and its relationships with environmental factors which will lead to a better understanding of the phosphorus (P) biogeochemical cycle in the sea. (C) 2008 Elsevier Ltd. All rights reserved.