文献类型：期刊文献

英文题名：Metal Content and Enrichment in Bivalves within the Drainage Area of Seawater Used for a Desulfurization Process in Zhanjiang Bay, China

作者：Zhang, Jibiao[1];Peng, Demeng[1];Zhang, Peng[1];Rong, Yumei[2];Hu, Lifang[2];Zhao, Lirong[1];Chen, Chunliang[3]

机构：[1]Guangdong Ocean Univ, Coll Chem & Environm Sci, Zhanjiang 524088, Peoples R China;[2]Neusoft Inst Guangdong, Foshan 528225, Peoples R China;[3]Guangdong Ocean Univ, Analytial & Testing Ctr, Zhanjiang 524088, Peoples R China

年份：2022

卷号：14

期号：16

外文期刊名：WATER

收录：SCI-EXPANDED(收录号：WOS:000845157500001)、、EI(收录号：20223712712148)、Scopus(收录号：2-s2.0-85137394612)、WOS

基金：This research was funded by the Research and Development Projects in Key Areas of Guangdong Province (2020B1111020004), the Science and Technology Program Project of Guangdong Province (2016A020225004), the First-class Special Fund (231419018) and Innovation Strong School Project (230420021) of Guangdong Ocean University.

语种：英文

外文关键词：metals of toxicological concern; distribution characteristics; enrichment behavior; oyster; barnacle; Zhanjiang Bay

外文摘要：As heavy metals are easy to accumulate and have strong biological toxicity, they pose a potential threat to human health by entering the human body through the cumulative effect of marine life. Land-based input is an important source of heavy metals in the ocean, which has a great influence on coastal water quality. In this study, the spatial distribution characteristics of heavy metals (Zn, Cu, Cd, Pb, Cr, As) in the coastal waters of the desulfurization process outlet of a power plant in Zhanjiang Bay were investigated, and the enrichment behavior of heavy metals by organisms (oysters and barnacles) were also studied. The results showed that, before the seawater desulfurization system was closed, there were high concentrations of heavy metals (Cu, Zn, Cd, Pb and Cr) in the surface seawater near the drainage outlet. The concentrations of these heavy metals in the surface seawater were higher than those in the bottom seawater within 100 m of the drainage outlet. After the seawater desulfurization system was closed, the average concentrations of Cu, Cr and As in seawater at each station decreased by 17.04%, 37.52% and 29.53%, respectively, while the average concentrations of Zn, Cd and Pb increased by 17.05%, 32.87% and 48.77%, respectively. Single factor pollution index (SFI) and bio-concentration factor (BCF) showed that there was a potential high accumulation risk of Zn in oysters and barnacles near the drainage outlet of desulfurization wastewater (0.5 < SFI < 1 and BCF > 1000). The SFI and BCF of each metal in oysters and barnacles decreased with the increase in distance from the drainage outlet. Generally, the coastal water quality of desulfurization process drainage area in Zhanjiang Bay were below the class IIof the "Seawater quality standard" (GB 3097-1997) of China. However, the heavy metals content in seawater and organisms near the drainage outlet is slightly higher. This suggested that if the seawater desulfurization process runs for a long time, it will have a negative impact on the coastal water and organisms.