Abstract：
Thorough deliberation is necessary to safeguard the tropical urban streams near the shoreline from human interference, as it is becoming a notable environmental danger. Consequently, an in-depth study was carried out on a significant urban waterway located on the southern seashore of Bangladesh, which is positioned in the Bengal delta, renowned as the largest delta in the globe. The current investigation assesses the potential health hazards associated with trace metals (Hg, Cu, As, Pb, Ni, Zn, Cd, Cr, Fe, and Mn) and uses chemometric analysis to determine where they originate. Likewise geochemical methods are used to analyze the levels of trace metal enrichment and pollution in the sediments of the river. Almost all of the elements\' mean concentrations were observed to be within the standard limits. The findings not only demonstrate the extent of trace metal contamination but also the health threats that it poses to the public (male, female, and children) by polluting the sediment. For all age groups of people, the hazard index was <1, suggesting there was no non-carcinogenic threat. Regardless of age and sex, exposure occurred in descending order: ingestion > dermal > inhalation. Total carcinogenic risk (TCR) values for males, females, and children were 1.45E-05, 1.56E-05, and 1.34E-04, respectively, recommending that children are at greater vulnerability than adults. The geochemical approach and chemometric analysis corroborate the human-induced impact of trace metal loading in the sediment of the waterway, which is predominantly caused by the oil industry, domestic garbage, and untreated waste discharge.
摘要：
必须经过深思熟虑，以保护海岸线附近的热带城市溪流免受人为干扰，因为它正在成为一个显著的环境危险。因此,对位于孟加拉国南部海岸的重要城市水道进行了深入研究，位于孟加拉三角洲，被誉为全球最大的三角洲。当前的调查评估了与痕量金属(Hg，Cu,As,Pb,Ni,Zn,Cd,Cr,Fe,和Mn），并使用化学计量学分析来确定它们的起源。同样，地球化学方法用于分析河流沉积物中痕量金属的富集和污染水平。几乎所有元素的平均浓度都在标准限度内。研究结果不仅证明了痕量金属污染的程度，而且还证明了它对公众构成的健康威胁（男性，女性,和儿童）通过污染沉积物。对于所有年龄组的人来说，危险指数<1,表明没有非致癌威胁.不管年龄和性别,暴露按降序排列：摄入>皮肤>吸入。男性的总致癌风险（TCR）值，女性,和儿童分别为1.45E-05、1.56E-05和1.34E-04，建议儿童比成人更脆弱。地球化学方法和化学计量学分析证实了人类对水道沉积物中痕量金属负载的影响，这主要是由石油工业引起的，生活垃圾,和未经处理的废物排放。
