金普湾海域表层沉积物中基质结合态磷化氢的分布特征  

Distribution of Matrix-Bound Phosphine in Surface Sediments of Jinpu Bay

作　　者：游丽丽[1] 宗海波[1] 张淑芳[2] 尹国宇[1] 李涛[1] 侯立军[1] 

机构地区：[1]华东师范大学河口海岸国家重点实验室,上海200062 [2]国家海洋环境监测中心,大连116023

出　　处：《环境科学》2013年第10期3804-3809,共6页Environmental Science

基　　金：海洋公益性行业科研专项(200905007);国家自然科学基金项目(41106074;41271114;41071135);河口海岸学国家重点实验室科研业务经费项目(2010RCDW07)

摘　　要：利用气相色谱-脉冲火焰光度检测器（GC-PFPD）,对金普湾海域夏季表层沉积物中基质结合态磷化氢的含量及其影响因素进行了初步分析.结果表明,研究区域内沉积物中均检测到基质结合态磷化氢的存在,其含量介于62.58~190.81ng·kg-1之间,均值为114.42 ng·kg-1;并且,在近岸海域沉积物中基质结合态磷化氢的含量普遍高于远岸海域沉积物.相关数理统计分析显示,沉积物中基质结合态磷化氢与有机磷含量和碱性磷酸酶活性有显著的线性正相关（R=0.882,P=0.01;R=0.819,P=0.023）,而与有机氮、无机磷含量、沉积物粒径的相关性并不显著.由此,揭示了金普湾海域沉积物中基质结合态磷化氢的累积与分布主要受有机磷化合物微生物降解作用的影响.This work investigated the distribution of matrix-bound phosphine in surface sediments of Jinpu Bay and associated environmental factors in summer, using the gas chromatography combined with a pulsed flame detector （GC-PFPD）. It showed that phosphine ubiquitously presented in the sediments of Jinpu Bay. Contents of matrix-bound phosphine varied between 62.58 and 190.81 ng.kg-1 , with the average value of 114.42 ng.kg-1. In addition, the spatial distribution of matrix-bound phosphine indicated that matrix-bound phosphine in inshore sediments had relatively higher contents than those in offshore sediments. Statistical analysis showed that matrix-bound phosphine significantly related to organic phosphorus and alkaline phosphatase activity （R = 0. 882, P = 0. 01 ; R = 0. 819, P = 0. 023）. However, there were no correlations between matrix-bound phosphine and organic nitrogen, inorganic phosphorus and sediment grain sizes. These results implied that accumulation and distribution of matrix-bound phosphined were mainly affected by the decomposition of organic phosphorus by microorganisms.

关 键 词：沉积物 磷化氢 分布差异 GC-PFPD 金普湾 

分 类 号：X131.2[环境科学与工程—环境科学] X52