This study assessed the seasonal distribution of trace metals in soft tissues of Tympanotonos fuscatus var radula, surrounding water, and sediment of Abule-Agege Creek in Southwest Nigeria. A non-significant variation (p > 0.05) in water physicochemical parameters occurred across wet and dry seasons. Metallic contamination (Copper, zinc, mercury, chromium, lead and cadmium) was found to be higher in T. fuscatus var radula than in water, and the sediment serves as a large depository of these trace metals. In this gastropod, the ability of metal accumulation from water (Bio-water accumulation) was higher than that from sediment (Bio-sediment accumulation). In addition, the linear regression models revealed positive relationship between tissue and sediment concentrations of lead and cadmium for both seasons. The estimated daily intake of investigated metals for both seasons was lower than the oral reference dose, while the target hazard quotient and total hazard index of individual metals were both less than 1, meaning that T. fuscatus var radula from the study region posed no health risk.

本研究评估了Tympanotonos fuscatus var radula软组织、周围水体和尼日利亚西南部Abule-Agege Creek 沉积物中痕量金属的季节性分布。 水的物理化学参数在湿季和旱季发生了不显着的变化（p > 0.05）。在T. fuscatus var radula中发现金属污染（铜、锌、汞、铬、铅和镉）较高比在水中，沉积物是这些微量金属的大型储存库。在这种腹足动物中，金属从水中积累（生物水积累）的能力高于沉积物（生物沉积物积累）。此外，线性回归模型显示两个季节的组织和沉积物中铅和镉的浓度呈正相关。两个季节的调查金属的估计每日摄入量低于口服参考剂量，而单个金属的目标危害商和总危害指数均小于 1，这意味着来自研究区域的T. fuscatus var radula不构成健康风险。