Scholarlink

<p>Trace metals (TMs) pose significant environmental and health risks due to their tendency to bioaccumulate and exhibit toxicity. This study investigates TM contamination within a university environment using cobwebs (CBWs) as passive samplers. CBWs were collected from various campus locations, including laboratories, student hostels, cafeterias, lecture halls, and roadways, to assess TM concentrations and their potential sources. Eight TMs (Cd, Co, Cr, Cu, Mn, Ni, Pb, and Zn) were quantified using inductively coupled plasma optical emission spectrophotometry (ICP-OES). Across all samples, the ∑TMs concentrations (µg/g) ranged from 0.01 to 0.19, 0.47–7.92, 0.04–4.46, 0.13–4.07, 0.03–4.64, 0.31–7.23, 0.05–3.39, and 0.14–22.24 for Cd, Cr, Co, Cu, Mn, Ni, Pb and Zn, respectively. The results revealed significant spatial variations, with laboratories exhibiting the highest TM concentrations, followed by student hostels and roadways. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) identified laboratory emissions, vehicular sources, and infrastructural materials as major contributors to TM pollution. Health risk assessments based on inhalation and dermal exposure routes indicated that non-carcinogenic and carcinogenic risks remained within acceptable limits; however, certain metals, such as Cr, Cd, and Co, showed elevated potential risks. The findings highlight the necessity for stringent waste management and continuous environmental monitoring in academic institutions and highlight the effectiveness of CBW as a cost-efficient bioindicator for air quality assessment, advocating for their broader application in environmental monitoring.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Cobweb as a biomonitoring tool for airborne trace metals in a Nigerian university setting: distribution pattern and risk assessment

  • 期刊论文

  • 发表日期：

    2025年10月17日

查看全文
  • Isaac Ayodele Ololade,
  • Oluwaseun Ifeoluwa Akindumila,
  • Oluwabunmi Jerome Oloyede,
  • Oluwaranti Olubunmi Ololade,
  • Temitayo Ale,
  • Nurudeen A. Oladoja

摘要

Trace metals (TMs) pose significant environmental and health risks due to their tendency to bioaccumulate and exhibit toxicity. This study investigates TM contamination within a university environment using cobwebs (CBWs) as passive samplers. CBWs were collected from various campus locations, including laboratories, student hostels, cafeterias, lecture halls, and roadways, to assess TM concentrations and their potential sources. Eight TMs (Cd, Co, Cr, Cu, Mn, Ni, Pb, and Zn) were quantified using inductively coupled plasma optical emission spectrophotometry (ICP-OES). Across all samples, the ∑TMs concentrations (µg/g) ranged from 0.01 to 0.19, 0.47–7.92, 0.04–4.46, 0.13–4.07, 0.03–4.64, 0.31–7.23, 0.05–3.39, and 0.14–22.24 for Cd, Cr, Co, Cu, Mn, Ni, Pb and Zn, respectively. The results revealed significant spatial variations, with laboratories exhibiting the highest TM concentrations, followed by student hostels and roadways. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) identified laboratory emissions, vehicular sources, and infrastructural materials as major contributors to TM pollution. Health risk assessments based on inhalation and dermal exposure routes indicated that non-carcinogenic and carcinogenic risks remained within acceptable limits; however, certain metals, such as Cr, Cd, and Co, showed elevated potential risks. The findings highlight the necessity for stringent waste management and continuous environmental monitoring in academic institutions and highlight the effectiveness of CBW as a cost-efficient bioindicator for air quality assessment, advocating for their broader application in environmental monitoring.