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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。
In October and November 2010, the fluxes of mercury exchange between sediments and atmosphere in the northeastern Jiaozhou Bay were measured by dynamic flux box. The results showed that: the atmospheric mercury content is higher (4.8 ± 1.3ng / m3), higher than the global background value, the mercury content in sediment exceeds the standard of marine sediment quality; the sediment in the second sampling intertidal zone - atmospheric mercury release The maximum appeared in the afternoon, respectively, 2.47ng / (m2 · h) and 2.75ng / (m2 · h). The intertidal zone sediment-atmosphere mercury exchange flux has a significant positive correlation with solar radiation, sediment temperature and atmospheric temperature, and has a negative correlation with atmospheric relative humidity.