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中文摘要：
所研究的沉积物样品采自福建省厦门市的港湾潮问带地区，选择了10μg／dm’的汞标准使用液对采集回来的沉积物样品进行了预污染处理，利用预污染后的沉积物样品，在实验室中进行了一系列的汞释放动力学实验．实验结果表明，汞的释放量较低，达到释放平衡时的释放量小于5μg／kg，释放过程可分为2个阶段：前8h为快速释放阶段，之后为慢速释放阶段，大约在24h达释放平衡．采用了Tessier五步提取法对未污染过的沉积物原样及进行过预污染处理的沉积物样品进行了汞的形态分析，结果表明通过污染实验吸附到沉积物上的汞的各形态含量大小顺序为：HgS为主的惰性汞〉单质汞〉盐酸溶无机汞及甲基汞〉有机结合、螯合态汞〉水溶态、交换态等活性汞．
英文摘要：
Sediment was sampled from the coastal intertidal sediment of Xiamen harbor, Fujian, China. According to the recent status of mercury pollution in China and other countries, and with reference to China＇ s national stand- ards for mercury emissions in industrial waste water （ p〈50 μg/dm3）, we selected a 10μg/dm3mercury solution to spike the intertidal sediment. The dynamics of mercury release in intertidal sediment was investigated and revealed that mercury release was 〈 5 μg/kg when equilibrium was reached, a relatively low release quantity. The dynamics of mercury release was biphasic： the quick-releasing phase occurred within 8 h, and the later slow-releasing phaseuntil equilibrium at approximately 24 h. Elovich and Freundlieh equations were used to fit the mercury releasing ki- netics and attained correlation coefficient values of 0.948 4 and 0. 888 9, respectively, indicating that both equa- tions fit well, with the Elovich equation indicating a relatively better correlation. Using the five-step Tessier sequen- tial extraction procedure for the speciation of particulate trace metals, we analyzed the main speciation of mercury in both original and spiked sediments. The study found that various mercury species were absorbed by the sediments at different rates, as follows ： inert mercury （HgS） .〉 elemental mercury 〉 HCl-soluble inorganic mercury and methyl mercury 〉 organic bound and chelated mercury 〉 reactive mercury-like water-soluble mercury and exchangeable mercury.
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