F. O. Ayodele, O. O. Ojuri, J. K. Ogunjobi, B. D. Oluyemi-Ayibiowu, O. O. Esuola, I. Nakouti
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The results obtained revealed that considerable levels of PAH and PCB are found at the dumpsites. The summation of the concentration levels of PAH <span>\\(\\left(\\sum \\text{PAH}\\right)\\)</span> for FUTA and Igbatoro dumpsites were 3.55 × 10<sup>-5</sup> and 5.51 × 10<sup>-5</sup> µ/m<sup>3</sup> while <span>\\(\\sum \\text{PCBs}\\)</span> are 1.00 and 0.99 <span>\\(\\text{ng}/{\\text{m}}^{3}\\)</span>. Cancer risk values of 1.10 × 10<sup>–5</sup> and 1.23 × 10<sup>–5</sup> obtained for FUTA and Igbatoro dumpsites respectively are within the acceptable limits of 1 × 10 <sup>−6</sup> to 1 × 10 <sup>−4</sup>. The inhalation rate analysis values of 1.53 × 10<sup>–6</sup> ng TEQ kg<sup>−1</sup> day<sup>−1</sup>(1.53 fg TEQ/kg per day) and 3.38 × 10<sup>–6</sup> ng TEQ kg<sup>−1</sup> day<sup>−1</sup> (3.38 fg TEQ/kg per day) obtained for adults and children respectively at these dumpsites are below the permissible threshold. Despite, being a short-term risk level assessment for the dumpsites, this study highlights the need for effective waste management strategies and the enforcement of environmental regulations to reduce the release of harmful pollutants into the atmosphere, ultimately safeguarding public health and the environment. 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引用次数: 0
摘要
与其他发展中国家和欠发达国家一样,露天倾倒处置是尼日利亚处理城市固体废物(MSW)的常用手段。环境(土地、空气和水)由于这种不受控制的城市生活垃圾倾倒的不健康做法而受到污染。污染物中值得注意的是持久性有机污染物(POPs)。本研究在30天内(2021年10月)测量了Igbatoro和Akure联邦科技大学(FUTA)垃圾场周围空气中的多环芳烃(PAH)和多氯联苯(PCB)浓度。空气样本按照联合国环境规划署(2017年)规定的标准操作程序收集,并使用气相色谱-质谱(GC-MS)进行评估。结果显示,在垃圾场发现了相当水平的多环芳烃和多氯联苯。FUTA和Igbatoro垃圾场的PAH浓度水平之和\(\left(\sum \text{PAH}\right)\)分别为3.55 × 10-5和5.51 × 10-5µ/m3, \(\sum \text{PCBs}\)分别为1.00和0.99 \(\text{ng}/{\text{m}}^{3}\)。FUTA和Igbatoro垃圾场的致癌风险值分别为1.10 × 10 - 5和1.23 × 10 - 5,在1 × 10 - 6至1 × 10 - 4的可接受范围内。在这些垃圾场获得的成人和儿童吸入率分析值分别为1.53 × 10-6 ng TEQ kg - 1 day - 1(1.53 fg TEQ/kg /kg / day)和3.38 × 10-6 ng TEQ kg - 1 day - 1(3.38 fg TEQ/kg /kg / day),均低于允许阈值。尽管这项研究是对倾倒场的短期风险水平评估,但它强调需要制定有效的废物管理战略和执行环境法规,以减少向大气中排放有害污染物,最终保障公众健康和环境。然而,建议对选定垃圾场内和周围的多环芳烃化合物和多氯联苯同系物进行长期评估(每年一次),以便有效和可靠地评估垃圾场的风险,特别是有关环境空气的风险。
Health risk assessment of the levels of Persistent Organic Pollutants in ambient air around urban dumpsites in Nigeria
Open dump disposal is the commonly used means of disposing Municipal Solid Waste (MSW) in Nigeria, just like in various other developing and underdeveloped countries. The environment (land, air, and water) has become contaminated due to this unwholesome practice of uncontrolled dumping of MSW. Notable among the contaminants are persistent organic pollutants (POPs). This study measured polycyclic aromatic hydrocarbon (PAH) and polychlorinated biphenyls (PCB) concentrations of the Igbatoro and Federal University of Technology, Akure (FUTA) dumpsites' ambient air within 30 days (October 2021). The air samples were collected following the standard operating procedures prescribed by the UNEP (2017) and evaluated using gas chromatography-mass spectrometry (GC–MS). The results obtained revealed that considerable levels of PAH and PCB are found at the dumpsites. The summation of the concentration levels of PAH \(\left(\sum \text{PAH}\right)\) for FUTA and Igbatoro dumpsites were 3.55 × 10-5 and 5.51 × 10-5 µ/m3 while \(\sum \text{PCBs}\) are 1.00 and 0.99 \(\text{ng}/{\text{m}}^{3}\). Cancer risk values of 1.10 × 10–5 and 1.23 × 10–5 obtained for FUTA and Igbatoro dumpsites respectively are within the acceptable limits of 1 × 10 −6 to 1 × 10 −4. The inhalation rate analysis values of 1.53 × 10–6 ng TEQ kg−1 day−1(1.53 fg TEQ/kg per day) and 3.38 × 10–6 ng TEQ kg−1 day−1 (3.38 fg TEQ/kg per day) obtained for adults and children respectively at these dumpsites are below the permissible threshold. Despite, being a short-term risk level assessment for the dumpsites, this study highlights the need for effective waste management strategies and the enforcement of environmental regulations to reduce the release of harmful pollutants into the atmosphere, ultimately safeguarding public health and the environment. However, a long-term assessment (annual) of the PAH compounds and PCB congeners within and around the selected dumpsites is recommended for an effective and reliable evaluation of the dumpsite risk, especially concerning ambient air.
期刊介绍:
Air Quality, Atmosphere, and Health is a multidisciplinary journal which, by its very name, illustrates the broad range of work it publishes and which focuses on atmospheric consequences of human activities and their implications for human and ecological health.
It offers research papers, critical literature reviews and commentaries, as well as special issues devoted to topical subjects or themes.
International in scope, the journal presents papers that inform and stimulate a global readership, as the topic addressed are global in their import. Consequently, we do not encourage submission of papers involving local data that relate to local problems. Unless they demonstrate wide applicability, these are better submitted to national or regional journals.
Air Quality, Atmosphere & Health addresses such topics as acid precipitation; airborne particulate matter; air quality monitoring and management; exposure assessment; risk assessment; indoor air quality; atmospheric chemistry; atmospheric modeling and prediction; air pollution climatology; climate change and air quality; air pollution measurement; atmospheric impact assessment; forest-fire emissions; atmospheric science; greenhouse gases; health and ecological effects; clean air technology; regional and global change and satellite measurements.
This journal benefits a diverse audience of researchers, public health officials and policy makers addressing problems that call for solutions based in evidence from atmospheric and exposure assessment scientists, epidemiologists, and risk assessors. Publication in the journal affords the opportunity to reach beyond defined disciplinary niches to this broader readership.