Abstract
Hg contents of 133 samples from the plough layer soil over Tongguan Goldfield were employed to explore the Hg cumulative effect and its characteristics in temporal and spatial variation via corporative evaluation. The results show that the Hg contents in the soil varied from 0.04 mg/kg to 61.2 mg/kg, its arithmetic mean value was 22.92 times that in its adjacent region. 94% samples were over-standard of the comparison value, while 54% samples exceeded the comparison value by more than 7.28 times. Obviously, there was a cumulative effect of Hg in the studied soil. The most serious effect was observed in the east area, especially along two north-south belts. The cumulative effect was also gotten more serious from 1989 to 2009 through analyzing the data of 9 sample points. Hg was added in the gold mineral processing and resolutely was presented in the tailings, and formed the most primary source for Hg in the studied soil.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.