The impact of marine current to Cu contents in Jiaozhou Bay

Abstract

Based on the investigation data on Cu contents in different seasons in 1983 in surface waters in Jiaozhou Bay, we analyzed the contents, pollution level and distributions of Cu. Results showed that Cu contents in May, September and October were 2.47-20.60 μg L, 0.86-4.86 μg L and 0.77-3.00 μg L, respectively. The major souces of Cu were marine current, strem flow, shipping, the top of the islands and overland runoff, whose source strengths were 20.60 μg L, 2.20-10.57 μg L, 9.48 μg L, 4.86 μg L and 2.28 μg L, respectively. The influence of marine current to Cu contents in Jiaozhou Bay was strongest, indicated that the back ground pollution of Cu was the essential source in 1983. Introduction A large amount of Cu-containing waste waters were generated along with the rapid increasing of industry and agriculture. The maine environment was finally polluted because ocean is the sink of various pollutants [1-2], and the pollution of marine environment could finally be harmful to human beings by means of food chain. Hence, it is necessary to understanding the pollution level and sources of Cu in the marine environment. Jiaozhou Bay is a semi-closed bay located in Shandong Province, eastern China, and has been polluted by various pollutants including Cu [1-2]. Based on the investigation data on Cu waters in different seasons in 1983, the aim of this paper was to analysis the content, pollution level, and sources of Cu, and to provide basis for the research and pollution control contermeasures on Cu in Jiaozhou Bay. Materials and method Jiaozhou Bay (35°55′-36°18′ N, 120°04′-120°23′ E) is located in the south of Shandong Peninsula, eastern China. The area and and average water depth are 460 km and 7 m, respectively, yet the bay mouth is only 2.5 km (Fig. 1). This bay is surrounding by cities of Qingdao, Jiaozhou and Jiaonan in the east, north and south, and is connected with the Yellow Sea in the south. There are more than ten inflow rivers such as Loushan River, Licun River and Haibo River, all of which are seasonal rivers [3-4]. The investigation on Cu in surface waters in Jiaozhou Bay was conducted by North China Sea Environmental Monitoring Center in May, September and October 1983 (Fig. 1). The investigation and measurement of Cu were follow by National Specification for Marine Monitoring [5]. 4th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering (ICMMCCE 2015) © 2015. The authors Published by Atlantis Press 1765 Fig.1 Geographic location and sampling sites of Jiaozhou Bay Results and discussion