Effect of Hg in Jiaozhou Bay Waters-Settling Process

Being a close bay, vertical settling was the dominant transfer process of Hg Jiaozhou Bay. Based on the investigation data of mercury (Hg) in bottom waters in Jiaozhou bay in 1979 to 1985 (in absence of 1984), this paper tried to analysis both of the settling processes and settling mechanisms of Hg. Results showed that that Hg in Jiaozhou Bay was settling continually over year, therefore a continued accumulation of Hg contents in bottom waters appeared, especially in spring and summer. Sediments in sea bottom could be both of source and sink of pollutants, especially for persistence pollutants such as Hg. Based on the both of the settling processes and settling mechanisms, the improve of recycle rate and the emission reduction of Hg should be the major pollution control strategies in Jiaozhou Bay.

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Plumbum Sink and Transfer Process in Jiaozhou Bay

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.651-653.1216 ◽

2014 ◽

Vol 651-653 ◽

pp. 1216-1219 ◽

Cited By ~ 18

Author(s):

Dong Fang Yang ◽

Xiao Geng ◽

Sheng Tao Chen ◽

Zi Jun Xu ◽

Wen Lin Cui

Keyword(s):

Point Source ◽

Transfer Process ◽

Pollution Control ◽

Wet Deposition ◽

Water Exchange ◽

Jiaozhou Bay ◽

Scientific Basis ◽

Background Information ◽

Sea Bottom ◽

Autumn And Winter

In order to provide background information and scientific basis for pollution control of Pb, this paper analyzed the sink and transfer process of Pb in Jiaozhou Bay. Results showed that Pb in Jiaozhou Bay was mainly sourced from agricultural non-point source and urban point source, as well as atmosphere dry and wet deposition, leading to the contents of Pb were increasing from spring to summer, and decreasing in autumn and winter. Due to Jiaozhou Bay is a closed bay, the narrow bay mouth is vital to the water exchange, which is the force of horizontal distributions. Horizontal diffusion and vertical deposition were the two major transferred processes of Pb, leading to a large amount of Pb was finally transferred to the sea bottom of the bay mouth areas, and the sea bottom of bay mouth areas was the sink of Pb in Jiaozhou Bay.

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The consistency of Arsenic’s high value regions in surface and bottom waters in Jiaozhou Bay

E3S Web of Conferences ◽

10.1051/e3sconf/20183801026 ◽

2018 ◽

Vol 38 ◽

pp. 01026

Author(s):

Dongfang Yang ◽

Jianxun Chai ◽

Xiaoye Gao ◽

Yunjie Wu ◽

Sixi Zhu

Keyword(s):

Surface Waters ◽

Water Body ◽

Coastal Waters ◽

Jiaozhou Bay ◽

Pollution Level ◽

Wet Season ◽

Guide Line ◽

Sea Bottom ◽

Bottom Waters ◽

Overland Runoff

This paper analyzed the contents and distributions of As in Jiaozhou Bay in 1982. Results showed that As’s contents in bottom waters in coastal waters in the southwest of the bay and the bay mouth in Jiaozhou Bay in July and October 1982 were 0.88-4.48 μg L-1 and 0.84-1.16 μg L-1, respectively. As’s contents were much lower than the guide line of Grade I, and the pollution level of As in bottom waters in Jiaozhou Bay in 1982 was still very slight. There was high value region in coastal waters in the southwest of the bay in July 1982 (4.48 μg L-1), while in October 1982 high value region was in the bay mouth (1.16 μg L-1). The source input of As from overland runoff in the southwest was strong in July, resulted in relative high value region in surface waters in coastal waters in the southwest of the bay, and therefore resulted in high value region in bottom waters in same region by means of rapid sedimentation of As. October was wet season and there was little As input to the bay, resulted in low As’s contents in surface waters, as well as bottom waters. At any time, the terrigenous As was foremost transported to surface waters, and was subsided to sea bottom through water body by vertical water’s effect. Hence, the high value regions of As’s contents in surface and bottom waters had characteristic of consistency in Jiaozhou Bay.

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Effect of Hg in Jiaozhou Bay Waters - Land Transfer Process

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.955-959.2496 ◽

2014 ◽

Vol 955-959 ◽

pp. 2496-2500 ◽

Cited By ~ 15

Author(s):

Dong Fang Yang ◽

Si Xi Zhu ◽

Feng You Wang ◽

Xiu Qin Yang

Keyword(s):

Economic Growth ◽

Decision Making ◽

Transfer Process ◽

Pollution Control ◽

Seasonal Variations ◽

Jiaozhou Bay ◽

River Channel ◽

Land Transfer ◽

Anthropogenic Discharge ◽

Industrial Adjustment

Based on the investigation data of mercury (Hg) in waters in Jiaozhou bay during time peroids of 1979 to 1985 (absent of 1984), this paper tried to analysis the seasonal variations of Hg in Jiaozhou Bay, to reveal the transfer process of Hg, and to provide basis for decision-making of pollution control. Results showed that, there was indistint seasonal variations of Hg content, due to anthropogenic discharge was the major source of Hg, which was not static, but depended on industrial adjustment. The land transfer process of Hg could be divided into three major processes: 1) human discharges of Hg to soil, waters, and atmosphere, etc., 2) Hg is washouted and delivered into streams, and 3) Hg is transferred to ocean via river channel runoff. In order to reconcile economic growth with environmental protection, we should have to improve the use ratio of Hg, and to reduce the discharge load of Hg.

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Effect of Hg in Jiaozhou Bay Waters-Transfer Processes

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.644-650.5316 ◽

2014 ◽

Vol 644-650 ◽

pp. 5316-5318

Author(s):

Dong Fang Yang ◽

Suo Tian Min ◽

Hong Guang Ge ◽

Feng Min Song ◽

Zhi Feng Liu

Keyword(s):

Transfer Process ◽

Jiaozhou Bay ◽

Shandong Province ◽

Pollution Sources ◽

The South ◽

Transfer Processes ◽

Land Transfer ◽

Settling Process ◽

Hg Pollution

Jiaozhou Bay is located in the south of Shandong province, and is around by economic developed cities such as Qingdao, Jiaozhou and Jiaonan etc. Previous studies showed that this bay had been polluted by mercury ( Hg) in certain level. This paper is a summary of previous studies, in order to reveal the transfer process of Hg, including 1) the variation of Hg content, 2) the pollution sources of Hg, 3) land transfer process of Hg, 4) aquatic transfer process of Hg, and 5) settling process of Hg. The results of this paper were meaningful to the control of Hg pollution.

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Palaeoenvironmental interpretation of echinoderm assemblages from Bathonian ore-bearing clays at Gnaszyn (Kraków-Silesia Homocline, Poland)

Acta Geologica Polonica ◽

10.2478/v10263-012-0019-6 ◽

2012 ◽

Vol 62 (3) ◽

pp. 351-366 ◽

Cited By ~ 2

Author(s):

Andrzej Boczarowski

Keyword(s):

Living Conditions ◽

Life Strategies ◽

Marine Waters ◽

Rock Samples ◽

Plant Detritus ◽

Sea Bottom ◽

Bottom Waters ◽

Good Oxygenation

ABSTRACT Boczarowski A. 2012. Palaeoenvironmental interpretation of echinoderm assemblages from Bathonian ore-bearing clays at Gnaszyn (Krakow-Silesia Homocline, Poland). Acta Geologica Polonica, 62(3), 351-366. Warszawa. This paper presents the results of an investigation into the variability of echinoderm assemblages from Bathonian ore-bearing clays from Gnaszyn. Remains of Crinoidea, Asteroidea, Ophiuroidea, Echinoidea, and Holothuroidea have been studied from 38 rock samples. The most common echinoderms represented are the crinoids Balanocrinusberchteni and Chariocrinus andreae and a few species of the holothurian genera Priscopedatus, Calclamna, Staurocaudina, Eocaudina, Achistrum, Theelia and Hemisphaeranthos. The echinoderms from Gnaszyn show various life strategies: benthic or epibenthic forms, sessile sestonophages (Crinoidea), motile macrophages (Asteroidea) and detritivores (Asteroidea, Ophiuroidea, Echinoidea), infaunal and epifaunal detritus feeders, sediment feeders or rake-feeders (Holothuroidea). Their presence suggests well oxygenated and presumably relatively cold bottom marine waters. The parts of the Gnaszyn section around concretion horizons and characterized by the ubiquitous occurrence of the holothurian Theelia and echinoids were deposited during phases of optimal living conditions with sufficient influx of plant detritus and good oxygenation of the sea bottom. These parts commonly host echinoderm associations dominated by crinoid remains, which occasionally are still articulated (or disarticulated but remaining intact) - this points to a quiet environment with normal oxygenation of the bottom waters but anaerobic/dysaerobic conditions in the sediment.

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