The study of heavy metal content in the sediments of the coastal zone of Qinzhou Harbour was used to analyse the level, distribution and sources of heavy metal pollution in the region and its hazards to the ecological environment and human health. The results showed that the average concentrations of Mn, Ni, Cr, Cu, and Pb exceeded background values along the shores of Qinzhou Harbour, Guangxi. Comprehensive assessments using Igeo, RI, and PLI identified Cu, Ni, and Pb as primary contaminants in the area, presenting slight to moderate ecological risks and biological toxic effects. Source analysis suggested that these metals primarily originated from anthropogenic activities including shipbuilding, chemical plant discharges, oil refining, and industrial smelting. Integrating SQGs with human health risk models revealed carcinogenic risks associated with Ni exposure, particularly for children. However, noncarcinogenic risks were not significant, and the risk to children was higher than to adults.

中文翻译：

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钦州港沉积物重金属污染多指标评估：揭示生态和人类健康风险


通过对钦州港沿岸区沉积物中重金属含量的研究，分析了该地区重金属污染的水平、分布和来源及其对生态环境和人类健康的危害。结果表明，广西钦州港沿岸 Mn、Ni、Cr、Cu 和 Pb 的平均浓度超过了背景值。使用 Igeo、RI 和 PLI 进行的综合评估确定 Cu、Ni 和 Pb 是该地区的主要污染物，呈现轻微至中度的生态风险和生物毒性影响。来源分析表明，这些金属主要来自人为活动，包括造船、化工厂排放、炼油和工业冶炼。将 SQG 与人类健康风险模型相结合揭示了与 Ni 暴露相关的致癌风险，尤其是对儿童。然而，非致癌风险并不显著，儿童的风险高于成人。