秋季胶州湾潮间带汞通量的初步研究  

The Research of Jiaozhou Bay Intertidal Mercury Flux in Autumn

作　　者：周建平[1] 王金玉[1] 刘汝海[1] 许廖奇[1] 张玉卿[1] 

机构地区：[1]海洋环境与生态教育部重点实验室,中国海洋大学,青岛266100

出　　处：《海洋湖沼通报》2014年第4期121-127,共7页Transactions of Oceanology and Limnology

基　　金：国家自然科学基金(40608045);山东省海洋生态环境与防灾减灾重点实验室开放基金项目(201305)资助

摘　　要：分别于2010年10月、11月,利用动力学通量箱对胶州湾东北部潮间带沉积物与大气界面间的汞交换通量进行了现场测定。结果表明:大气汞含量较高(4.8±1.3ng/m3),高于全球背景值,沉积物汞含量超过海洋沉积物质量一类标准;2次采样潮间带沉积物-大气汞的释放通量均在午后出现最大值,分别为2.47ng/(m2·h)和2.75ng/(m2·h)。潮间带沉积物-大气间的汞交换通量与太阳辐射、沉积物温度以及大气温度有显著的正相关关系,与大气相对湿度呈负相关关系。The mercury exchange fluxes on the air-sediment interface in the intertidal of Northeast Jiaozhou Bay were measured with the dynamic flux chamber method and cold vapor atomic fluorescence （CVAFS）. The results showed that concentrations of mercury in the air were elevated over the global background values （1. 5 - 2. 0 ng· m^-3）. Sediment mercury levels were elevated over the primary standard of the Sediment Quality. The maximum value of the mercury flux both appeared at afternoon, which was 2.47 ng/（m^2· h） appeared at about 14.30 on October, while was 2.75 ng/（m^2· h） appeared at 14.57 on November. The results also illustrated that Hg fluxes were significantly correlated with solar radiations, sediment temperatures and free air temperatures, while were inversed with the air relative humidity. The solar radiation had directly affected with the produce of Hg^0 and it also affected the temperatures to influence to the reaction rates and exchange rates of Hg^2＋.

关 键 词：胶州湾 潮间带 交换通量 沉积物 大气 

分 类 号：X131.1[环境科学与工程—环境科学]