厦门市秋冬季节大气汞污染调查  

The Atmospheric Mercury Pollution Survey During Autumn and Winter Seasons in Xiamen

作　　者：李红英[1] 罗津晶[1] 李金兰[1] 

机构地区：[1]厦门大学环境科学研究中心,福建厦门361005

出　　处：《环境科学与管理》2009年第9期48-52,194,共6页Environmental Science and Management

摘　　要：文章采用两次金汞齐一冷原子荧光光谱法对厦门地区秋冬季节大气汞的污染状况作了初步调查分析，结果表明厦门地区大气中汞的浓度平均为11．037ng／m^3，其含量高于北半球大气气态总汞含量的背景值（1．5-2．0ng／m^3），表明该地区已受到一定程度的大气汞污染；在一定的采样区域，大气汞浓度与温度、太阳辐射量、大气压、空气湿度成正相关，与风速成负相关；气态汞的含量在80％左右，这与该地区的人为活动多有关，与其他地区报道的类似区域情况的汞污染状况相符；工业区，学校实验室周边区域，生产过程中以汞为原料的工厂等附近区域，大气中汞的含量较高，开阔区域的海边含量较低，交通繁忙区域最低（所选采样点与交通要道有一定的距离），这种浓度分布说明了大气中汞的存在具有区域性特征。In this paper, the atmospheric mercury pollution during autumn and winter seasons in Xiamen was analyzed with the method of two - stage gold amalgamation - cold vapor atomic fluorescence spectroscopy. The results show that the average concentration of atmospheric mercury in Xiamen is 11. 037ng/m^3, which is higher than the background value （ 1.5ng/m^3 - 2. 0ng/ m^3 ） of the atmospheric mercury in the northern hemisphere. It indicates that there is a certain degree of mercury pollution in Xia- men. there is a positive relationship between mercury concentration and temperature,solar radiation,atmospheric pressure and humidity, while there is a negative relationship between mercury concentration and wind speed. The content of gaseous mercury in Xiamen is about 80%, which shows analogous level compared to the mercury concentration in other areas. The high content of gaseous mercury in Xiamen maybe related to the human activities. The mercury concentration is high in some regions such as industrial zone, areas around school laboratories, factories which use mercury as raw materials, while the mercury concentration is a little lower in the open area of the seaside, and the mercury concentration is the lowest in traffic busy areas（ there is some distance between sampling locations and traffic busy in this study）. The distribution of mercury concentration indicates that there is a regional character of atmospheric mercury in Xiamen.

关 键 词：大气采样 汞 浓度 厦门 

分 类 号：X131.2[环境科学与工程—环境科学]