School of Resources, Environment and Materials, Guangxi University, Nanning, China; Guangxi Bossco Environmental Protection Technology Co., Ltd, Nanning, China.
School of Resources, Environment and Materials, Guangxi University, Nanning, China; Marine Environmental Monitoring Centre of Guangxi, Beihai, China.
Mar Pollut Bull. 2021 Jul;168:112403. doi: 10.1016/j.marpolbul.2021.112403. Epub 2021 May 8.
The Beibu Gulf is an important passageway between China and the Association of Southeast Asian Nations, where there has been an increase in pollution of heavy metals (HMs). High concentrations of Pb, Cr, Cd, Cu, Zn, As, and Hg in surface sediment were found in Qinzhou Bay, Fangchenggang, and other coastal areas. Stochastic geo-accumulation analyses identified the pollution to be "uncontaminated"; however, it had an 18% probability of deterioration. The Cd, Hg, and As pollution were relatively serious. Principal component analysis, positive matrix factor model, and mercury isotopes demonstrated that the HMs could mainly be attributed to industrial sources including petrochemical, coal-fired, metal and metalloid processing, leather tanning, and human activities: anthropogenic sources accounted for approximately 70% of all the contaminations. This study demonstrates the contribution of terrigenous input to HMs even at a low level and provides basic data for the coordinated development of land and marine resources.
北部湾是中国与东南亚国家联盟之间的重要通道，该地区重金属（HMs）污染不断加剧。在钦州湾、防城港等沿海地区，表层沉积物中发现 Pb、Cr、Cd、Cu、Zn、As 和 Hg 等重金属的浓度较高。随机地积累分析表明，污染处于“无污染”状态，但有 18%的恶化概率。Cd、Hg 和 As 的污染相对较为严重。主成分分析、正矩阵因子模型和汞同位素表明，这些重金属主要来自于工业源，包括石化、燃煤、金属和类金属加工、制革和人类活动：人为源约占所有污染的 70%。本研究表明，即使在低水平的情况下，陆源输入对 HMs 的贡献也很大，为陆海资源协调发展提供了基础数据。
