目前的工作旨在使用全反射 X 射线荧光光谱 (TXRF) 评估从泰米尔纳德邦北金奈到本地治里沿海地区收集的 21 个沉积物样品中重金属 (HM) 的污染和人类健康风险。计算富集因子（EF）、污染因子（CF）和地累积指数（Igeo）来估计沉积物污染。 HMs 的平均浓度（mg kg-1 干重）为：Al (4305.12)、V (25.77)、Cr (15.08)、Mn (83.39)、Fe (4539.77)、Ni (2.89)、Cu (2.67)、锌 (9.46)、砷 (2.81)、汞 (0.05) 和铅 (0.92)。 EF结果表明Al、Ni和Pb没有富集，V中度富集，As和Hg重度富集。根据 Igeo，所有沉积物样品均未受到重金属污染（砷和汞除外）。根据终生癌症总风险 (LCR)，致癌的 Cr、As 和 Pb 不会对研究区域的人们造成重大健康风险。版权所有 © 2023 Elsevier Ltd。保留所有权利。

The present work aimed to assess the contamination and human health risk assessment of heavy metals (HMs) in 21 sediment samples collected from the North Chennai to Pondicherry coastal area of Tamil Nadu using total reflection X-ray fluorescence spectroscopy (TXRF). Enrichment factor (EF), contamination factor (CF), and geo-accumulation index (Igeo) were calculated to estimate sediment contamination. The average concentrations of HMs (mg kg-1 dry weight) were: Al (4305.12), V (25.77), Cr (15.08), Mn (83.39), Fe (4539.77), Ni (2.89), Cu (2.67), Zn (9.46), As (2.81), Hg (0.05), and Pb (0.92). Results of EF indicated no enrichment with Al, Ni, and Pb, moderate enrichment with V, and severe enrichment with As and Hg. Based on Igeo, all sediment samples showed unpolluted with HMs (except As and Hg). Based on total lifetime cancer risk (LCR), there are no significant health risks for people in the study area from carcinogenic Cr, As, and Pb.Copyright © 2023 Elsevier Ltd. All rights reserved.