Department of Safety, Health, and Environmental Engineering, Hungkuang University, No. 1018, Sec. 6, Taiwan Boulevard, Shalu District, Taichung City, 43302, Taiwan, ROC.
Department of Chemical and Materials Engineering, National Chin-Yi University of Technology, No.57, Sec. 2, Zhongshan Rd., Taiping Dist., Taichung, 41170, Taiwan, ROC.
Environ Geochem Health. 2021 Jan;43(1):235-245. doi: 10.1007/s10653-020-00695-z. Epub 2020 Aug 27.
This study aimed to measure and discuss the relationship of ambient air precipitations with respect to mercury wet depositions at suburban, agriculture and traffic three characteristic sampling sites during the year of 2019. In addition, the mercury volume weighted mean concentrations (VWM) at three characteristic sampling sites were also calculated. Finally, the ambient mercury wet depositions data obtained in this study to various world sampling sites were also compared and discussed in this study. The results indicated that the average mercury wet depositions for suburban, agriculture and traffic areas were 0.62, 0.55 and 2.32 ng/m min, respectively. And the average mercury VWM values were 0.9, 0.72 and 1.85 ng/m min for suburban, agriculture and traffic sites, respectively. In addition, the highest VWM and wet depositions for mercury both occurred in March at traffic and suburban areas. And the mercury wet depositions displayed a declined trend when the month was moved from March to July at both traffic and suburban sampling sites. In addition, the relationship between wet depositions and precipitations was low to moderate correlated in traffic area, while the relationship between wet depositions and precipitations was insignificant at both suburban and agriculture areas. Moreover, the average highest mercury wet deposition occurred in Nepal when compared to the other world sites. In addition, the average value of mercury wet depositions in Nepal was about 17.23 times to that of data obtained in this study during the period of 2007-2019. Finally, the average highest VWM (ng/L) occurred in the China. In addition, the average value mercury VWM in China was about 14.82 times to that of data obtained in this study during the period of 2007-2019.
本研究旨在测量和讨论 2019 年郊区、农业和交通三个特征采样点大气降水与汞湿沉降的关系。此外，还计算了三个特征采样点的汞体积加权平均值（VWM）。最后，还将本研究获得的大气汞湿沉降数据与世界各地的多个采样点进行了比较和讨论。结果表明，郊区、农业和交通区的平均汞湿沉降量分别为 0.62、0.55 和 2.32ng/mmin。郊区、农业和交通点的汞 VWM 值平均值分别为 0.9、0.72 和 1.85ng/mmin。此外，交通和郊区地区汞的 VWM 和湿沉降量最高值均出现在 3 月。交通和郊区采样点的汞湿沉降量从 3 月到 7 月逐月减少。此外，交通区湿沉降量与降水量之间的关系为低中度相关，而郊区和农业区湿沉降量与降水量之间的关系不显著。此外，与其他世界站点相比，尼泊尔的汞湿沉降量平均值最高。此外，尼泊尔汞湿沉降量的平均值约为本研究期间（2007-2019 年）数据的 17.23 倍。最后，汞湿沉降量的最高平均值（ng/L）出现在中国。此外，中国汞 VWM 的平均值约为本研究期间（2007-2019 年）数据的 14.82 倍。
