Arsenic (As) and antimony (Sb) are toxic metalloids widely distributed in coastal sediments, but are seldom studied for their geochemical baselines. In this study, sediment samples were collected from Jiaozhou Bay (JZB) to evaluate their baselines, contamination, and ecological risk. Results showed that the As and Sb concentrations were between 3.15 and 11.94 mg/kg and 0.20–0.61 mg/kg, respectively. Sc and Fe showed good performance in developing geochemical baseline functions for the metalloids. Organic matter content and clay had significant positive correlations with metalloid abundance in sediments (p < 0.01). In the JZB, As and Sb were not enriched in the sediments, with the enrichment factors below 1. Furthermore, the contamination degrees of As and Sb were low in the JZB. In addition, the ecological risks of As and Sb were relatively low in the JZB, with the risk index between 4.02 and 12.70 and 1.68–5.09, respectively.

砷（As）和锑（Sb）是有毒的准金属，广泛分布在沿海沉积物中，但很少对其地球化学基准进行研究。在这项研究中，从胶州湾（JZB）收集了沉积物样品，以评估其基线，污染和生态风险。结果表明，砷和锑的浓度分别在3.15至11.94 mg / kg和0.20至0.61 mg / kg之间。Sc和Fe在开发准金属的地球化学基线功能方面显示出良好的性能。有机质含量和黏土与沉积物中准金属丰度呈显着正相关（p <0.01）。在JZB中，沉积物中未富集As和Sb，富集因子低于1。此外，JZB中As和Sb的污染程度较低。此外，JZB中As和Sb的生态风险相对较低，风险指数分别在4.02和12.70和1.68–5.09之间。