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2012年7月—2013年9月对旬阳汞矿区大气降水中总汞、活性汞和溶解气态汞污染特征以及微量元素浓度进行了调查,分析了汞与微量元素浓度之间的相关性。结果表明:旬阳汞矿区大气降水中总汞、活性汞和溶解气态汞浓度的平均值分别为(48±43)、(13±9.0)和(3.8±3.6)ng·L~(-1),浓度变化范围分别为4.4~253、0.39~43和0.41~17 ng·L~(-1);大气降水中活性汞和溶解气态汞分别占总汞浓度的27%和7.9%,其他无机汞形态是其主要存在形态,占总汞浓度的65%;雨水的pH平均值为5.4,变化范围为4.2~6.7;大气降水中Hg和Sb、Se呈显著的正相关,R~2分别为0.67和0.54,说明Hg和Sb、Se具有相同的来源,其中旬阳汞矿的开采和汞锑冶炼等人为释放源为主要贡献源,其次为燃煤源。
From July 2012 to September 2013, the characteristics of total mercury, active mercury and dissolved gaseous mercury in atmospheric precipitation of Xunyang mercury mine and the concentrations of trace elements were investigated. The correlation between mercury and trace element concentrations was analyzed. The results showed that the mean concentrations of total mercury, active mercury and dissolved gaseous mercury in the atmospheric precipitation of Xunyang mercury mine were (48 ± 43), (13 ± 9.0) and (3.8 ± 3.6) ng · L -1, respectively , Respectively. The concentrations ranged from 4.4 to 253, 0.39 to 43 and 0.41 to 17 ng · L -1, respectively. Active mercury and dissolved mercury in the precipitation accounted for 27% and 7.9% of the total mercury concentration respectively. Other inorganic mercury The morphology is the main form, which accounts for 65% of the total mercury concentration. The average pH value of rainwater is 5.4 and the range of variation is 4.2 ~ 6.7. Hg, Sb and Se are positively correlated with R ~ 2, 0.67 And 0.54, indicating that Hg and Sb, Se have the same source, of which man-made release source such as the end of the sun mercury deposits and mercury mercury antimony smelting as the main contributor, followed by coal-fired sources.