Academic Journal of Engineering and Technology Science, 2019, 2(3); doi: 10.25236/AJETS.020053.
Dongfang Yang1,2,3,a, Ye Li4, Bailing Fan1,2, Chunhua Su1,2, Sixi Zhu1,2
1. Research Center for Karst Wetland Ecology, Guizhou Minzu University, Guizhou Guiyang, Guizhou Guiyang, China
2. College of Chemistry and Environmental Science, Guizhou Minzu University, Shanghai, 550025, China
3. North China Sea Environmental Monitoring Center, SOA, Qingdao 266033, China
4. School of Computer Science, Fudan University, 201203, China.
Based on the investigation data of Hg in Jiaozhou Bay in May, August and October of 1991, according to the horizontal and vertical distribution of Hg content, the difference of Hg at surface and bottom disclosed that the Hg content and transport time influenced the variation of Hg content at surface and bottom and the sedimentation area. The results showed that in bay center, there was no source to transport Hg content in May and 0.081μg/L of Hg content was transported from atmospheric sedimentation in August. In eastern nearshore waters, 0.041μg/L of Hg content was transported from ships and wharfs in May and there was no source in August. Spatially, different sources presented the spatial variation of Hg content. Specifically, in May, in eastern nearshore waters, Hg content at surface was less than that at bottom, decreasing to the bay center along with the gradients. In August, in bay center, Hg content at surface was less than that at bottom, decreasing to eastern nearshore waters along with the gradients. Temporally, at different time, the sources changed. From May to August, in bay center, from no source to atmospheric sedimentation, there was no Hg content at seafloor, so Hg content at surface was more than that at bottom. Whereas, in nearshore waters, Hg content was transported by ships and wharfs all the time, causing a great number of Hg content at seafloor, so Hg content at surface was less than that at bottom. Therefore, the spatial and temporal variation of Hg content disclosed that the Hg content accumulated in seafloor was decided by the time of transporting Hg content, not contrary.
Hg content; transport amount and time; spatial and temporal variation at surface and bottom; Hg content accumulated in seafloor; Jiaozhou Bay
Dongfang Yang, Ye Li, Bailing Fan, Chunhua Su, Sixi Zhu. Hg Content Accumulated in Seafloor Decided by the Time of Transporting Hg Content. Academic Journal of Engineering and Technology Science (2019) Vol. 2 Issue 3: 36-43. https://doi.org/10.25236/AJETS.020053.
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