Department of Environmental Management and Toxicology, College of Environmental Resources Management, Federal University of Agriculture Abeokuta, Abeokuta, Ogun state, Nigeria.
Department of Chemistry, College of Physical Sciences, Federal University of Agriculture Abeokuta, Abeokuta, Ogun state, Nigeria.
Sci Rep. 2018 Apr 24;8(1):6482. doi: 10.1038/s41598-018-24810-4.
This study aimed at assessing the environmental pollution and related hazards of industries at Agbara, Ogun State, Nigeria. A total of five sampling points were identified and selected at random. Environmental samples were collected on a weekly basis for duration of 10 weeks. Air pollutants measured were CO, CO, NO, NO, VOCs, HS, SO, NH, PM andPM using standard procedure. Dust and plant samples were also collected and analyzed for heavy metals (Pb, Cr, Cd, Cu and Zn) using the Atomic Absorption Spectrophotometer (AAS). Data was evaluated for descriptive and inferential statistics using SPSS for Windows version 22.0. Air pollution data were also subjected to SPE-risk model. The results of highest measured air parameters were: CO (5.50 ± 2.32 ppm), CO (3.00 ± 2.05%), NO (0.90 ± 0.32 ppm), NO (0.60 ± 0.52 ppm), PM (0.40 ± 0.52 mg/m) and PM (0.20 ± 0.42 mg/m). The results of heavy metal concentrations in dust samples were: 57.40 ± 13.28 mg/kg for Cu, 45.36 ± 12.37 mg/kg for Cr, 22.80 ± 17.36 mg/kg for Zn, 13.76 ± 3.08 mg/kg for Pb and 0.32 ± 0.36 mg/kg for Cd. Metal concentrations in plants were: Cu (70.07 ± 16.24 mg/kg), Zn (67.69 ± 14.50 mg/kg), Cr (22.46 ± 9.35 mg/kg), Pb (13.76 ± 3.08 mg/kg) and Cd (2.25 ± 3.04 mg/kg). This study revealed the concentrations of CO, NO and NO higher than the World Health Organization (WHO) permissible standards while Pb, Cu, Cr, Cd and Zn values in dust samples were also found above the National Environmental Standards and Regulations Enforcement Agency (NESREA) and the WHO standards. Results of SPE-RISK model indicated that CO, CO, Pb, Cu and Zn posed the greatest health risks, while the Principal Component Analysis (PCA) indentified pollutant sources from industrial and vehicle exhaust.
本研究旨在评估尼日利亚奥贡州阿加拉地区工业的环境污染及其相关危害。共确定了五个采样点，并随机选择了五个采样点。每周采集一次环境样本，持续 10 周。使用标准程序测量了空气中的污染物，包括 CO、CO、NO、NO、VOCs、HS、SO、NH、PM 和 PM。使用原子吸收分光光度计（AAS）采集并分析了灰尘和植物样本中的重金属（Pb、Cr、Cd、Cu 和 Zn）。使用 Windows 版本 22.0 的 SPSS 进行描述性和推论统计数据分析。空气污染物数据也经过 SPE-risk 模型分析。最高测量空气参数的结果是：CO（5.50±2.32ppm）、CO（3.00±2.05%）、NO（0.90±0.32ppm）、NO（0.60±0.52ppm）、PM（0.40±0.52mg/m）和 PM（0.20±0.42mg/m）。灰尘样本中重金属浓度的结果是：Cu 为 57.40±13.28mg/kg，Cr 为 45.36±12.37mg/kg，Zn 为 22.80±17.36mg/kg，Pb 为 13.76±3.08mg/kg，Cd 为 0.32±0.36mg/kg。植物中的金属浓度为：Cu（70.07±16.24mg/kg）、Zn（67.69±14.50mg/kg）、Cr（22.46±9.35mg/kg）、Pb（13.76±3.08mg/kg）和 Cd（2.25±3.04mg/kg）。本研究表明，CO、NO 和 NO 的浓度高于世界卫生组织（WHO）允许的标准，而灰尘样本中的 Pb、Cu、Cr、Cd 和 Zn 的含量也高于国家环境标准和法规执行局（NESREA）和世界卫生组织的标准。SPE-RISK 模型的结果表明，CO、CO、Pb、Cu 和 Zn 构成了最大的健康风险，而主成分分析（PCA）则确定了工业和车辆尾气中的污染源。
