Effect of Hg on Jiaozhou BayWaters – The Change Process of the Hg Pollution Sources

Yang, Dong; Wang, Feng You; He, Hua Zhong; Wu, You Fu; Zhu, Si Xi

doi:10.4028/www.scientific.net/amr.955-959.1443

Cited by 25 publications

(7 citation statements)

References 7 publications

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“…As the rainy season was going on, the remaining Hg in land surface and river bed was decreasing, and the content and flux of Hg to waters and ocean were also decreasing in summer in July 1988. The seasonal variations of Hg contents in 1988 were consistent with other years during 1979-1986 [1][2][3][4][5][6][7][8][9][10][11], that was Hg contents in surface waters weer relative high in spring, and were relative low in summer, and were lowest in autumn. That was the seasonal variation's mechanism of Hg, and was also the terrestrial migration mechanism.…”

Section: Seasonal Variation's Mechanism Of Hgsupporting

confidence: 66%

“…For vertical distribution, the horizontal distributions of Hg contents in surface and bottom waters were consistent in July 1988, indicating that the relative high Hg contents were extending from the bay to open waters. The horizontal distributions of Hg contents in surface and bottom waters were confirming the migration process and mechanism in waters [10][11]. Hence, the settling process of Hg indicated that Hg was low soluble in waters and could be absorbed to suspending particular matters and transported from surface waters to bottom waters, and fixed to sedimentation in sea bottom finally.…”

Section: Seasonal Variation's Mechanism Of Hgmentioning

confidence: 52%

See 1 more Smart Citation

Seasonal Variation Mechanism of Hg in Jiaozhou Bay 1988

Yang¹,

Wang²,

Tao³

et al. 2018

Proceedings of the 2017 4th International Conference on Machinery, Materials and Computer (MACMC 2017)

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This paper analyzed the vertical distribution and seasonal variation of Hg in waters in Jiaozhou Bay in 1988. Results showed that Hg contents in surface and bottom waters were in order of spring >summer. In case of Hg contents were relative high/low in surface waters, Hg contents in bottom waters were also relative high/low. The continuous sediment of Hg resulted in dilution and accumulation effects in bottom waters. The relative high Hg contents resulted in dilution effect in bottom waters, while the relative low Hg contents resulted in accumulation effect in bottom waters. The seasonal variations of Hg contents in surface waters were determined by the changes of the major Hg sources, while the corresponding seasonal variations of Hg contents in bottom waters were results of accumulation effect and dilution effect of waters.The distributions of Hg contents in surface and bottom waters were reverse in case of the input and sedimentation of Hg was just beginning, yet were consistent when the input and sedimentation of Hg had been on-going for a time period. Finally, the mechanism of seasonal variation mechanism and terrestrial migration mechanism were proposed.

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Section: Seasonal Variation's Mechanism Of Hgsupporting

confidence: 66%

Section: Seasonal Variation's Mechanism Of Hgmentioning

confidence: 52%

Seasonal Variation Mechanism of Hg in Jiaozhou Bay 1988

Yang¹,

Wang²,

Tao³

et al. 2018

Proceedings of the 2017 4th International Conference on Machinery, Materials and Computer (MACMC 2017)

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“…There are more than a dozen rivers entering the sea in Jiaozhou Bay, among which the Dagu River, Yang River and the Haibo River, Licun River and Loushan River in Qingdao City with larger runoff and sand content. These rivers are all seasonal rivers, and the river hydrological characteristics have obvious seasonal changes [12,13].…”

Section: The Natural Environment Of Jiaozhou Baymentioning

confidence: 99%

“…With the release of large amounts of Hg from land to the environment by many industries, Hg content has appeared on land, atmosphere, and oceans. The pollution degree and source of Hg content in the coastal waters has become everyone's concern [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Based on the survey data in 1993, the author studied the content, horizontal distribution and sources of Hg in the water body of Jiaozhou Bay.…”

Section: Introductionmentioning

confidence: 99%

The land surface mildly contaminated by Hg

Yang

Ding

et al. 2021

E3S Web Conf.

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The Hg content in the waters of Jiaozhou Bay was within 0.010-0.060μg/L in May, September and October 1993, which conforms to the seawater quality standards of Class I and II. It indicates that in the entire waters of Jiaozhou Bay, there were some water areas that did not get contaminated by Hg while some areas got mild contamination by Hg in May, September and October. In May, the variation range of Hg content in the waters of Jiaozhou Bay was 0.010-0.046μg/L. In September, it ranged within 0.007-0.011μg/L. And in October, the content of Hg detected in the waters of Jiaozhou Bay was 0.060μg/L. There were three sources to transport Hg content, open sea currents, Licun river and the surface runoff. The Hg content from the transportation of open sea currents was 0.046μg/L, from the Licun river was 0.011μg/L and from the surface runoff was 0.060μg/L. This paper builds a model block diagram to present the different paths and Hg contents that were input in the Jiaozhou Bay. In May, the open sea currents did not get any contamination of Hg; in August, the Licun river did not get any contamination of Hg as well; while in September, the surface runoff was mildly contaminated by Hg. The author concluded two points about the migration of Hg content: 1) Human activities discharge Hg to the land so that the Hg content could directly run to the ocean through the surface runoff. As the Hg content transported by surface runoff was relatively high, it resulted that the nearshore waters got mild contamination of Hg content. On the other hand, the surface runoff transported Hg to rivers, resulting relatively low content of Hg. Then rivers delivered the Hg content to nearshore waters, leading to a non-contaminated condition of rivers. 2) Human activities input Hg content to the ocean in a long period, resulting the increase of Hg content in the ocean. As the accumulation of Hg content in the ocean, the ocean got close to the mild contamination status.

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“…Jiaozhou Bay is a semi-closed bay located in Shandong Province China, and has been polluted by various pollutants including Hg after the rapid increasing of industry the past three decades [10][11][12][13][14]. Using investigation data on Hg in April and July in Jiaozhou Bay, this paper analyzed the contents and horizontal distribution trends, and identified the rapid sedimentation processes of Hg.…”

Section: Introductionmentioning

confidence: 99%