大连市南部地区冬季气态总汞浓度特征研究  

Characteristics of Total Gaseous Mercury Concentrations in Southern Area of Dalian in Winter

作　　者：苗书一[1] 纪德钰[1] 王曼华[1] 郭浩[1] 王伟[1] 

机构地区：[1]大连市环境监测中心,辽宁大连116023

出　　处：《中国环境管理干部学院学报》2015年第2期69-73,共5页Journal of Environmental Management College of China

摘　　要：利用RA-915AM汞监测仪对大连市南部地区冬季环境空气中的气态总汞进行连续监测,研究了该地区气态总汞的污染现状、日变化特征以及与空气质量指数（AQI）和气象参数的关系。结果显示,采样期间气态总汞浓度日均值变化范围为2.1-7.1 ng/m3。气态总汞浓度与AQI具有几乎一致的变化趋势。气态总汞浓度从早晨7：00左右开始逐渐减小,中午时达到最小值,之后又逐渐增大。夜间浓度高于昼间,属于夜间控制型。气态总汞与风速呈显著负相关性,与相对湿度呈显著正相关性,与温度无相关性。The co ncentration of total gaseous mercury（ TGM） in southern area of Dalian was monitored continuously using RA-915 AM mercury monitor. The present situation of mercury pollution, diurnal variation of TGM concentration and relationship with air quality index（ AQI）and meteorologic parameters were studied. Daily mean concentration of TGM was from 2.1 ng/m3to7.1 ng/m3 during the sampling period. TGM concentration increased with air quality index. It was showed that TGM concentration increased from about 7：00 and reached to the minimum at noon.Afterwards, it began to increase. TGM distribution pattern indicated that higher concentration of TGM was observed in nighttime. Wind speed had a significant negative correlation with TGM,whereas relative humidity had a positive relationship. There is no correlation between ambient temperature and TGM.

关 键 词：气态总汞 空气质量指数 温度 相对湿度 风速 

分 类 号：X831[环境科学与工程—环境工程]