Abstract
The concentrations and compositional patterns of the United States Environmental Protection Agency (US EPA) 16 priority polycyclic aromatic hydrocarbons (PAHs) were determined in surface soils of an urban environment in the Niger Delta of Nigeria with a view to providing information on the sources, extent of contamination and human health risks of PAHs in these soils. The analyses were performed by means of gas chromatography-mass spectrometry (GC-MS) after extraction of the soils with hexane/dichloromethane and clean-up of the extracts. The concentration of Σ16 PAHs in the urban soils ranged from 188 to 684 µg kg−1, while the ΣPAH7c (carcinogenic PAHs) ranged from 28.5 and 571 µg kg−1. The estimated carcinogenic and mutagenic potency factors for these sites ranged from 2.34 to 197 and 9.66 to 195 µg kg−1 respectively. The composition of PAHs in these soils follows the order: 5-rings>4-rings>3-rings>6-rings>2-rings, and higher molecular weight PAHs accounted for a significant proportion of the Σ16 PAH concentration in this study. The results indicated that there is a high potential risk of cancer development as a result of exposure of PAHs via ingestion, dermal contact and inhalation. The diagnostic ratios indicate that the PAHs in these soils originated mainly from pyrogenic processes, such as combustion of petroleum, fossil fuels and biomass such as woods, charcoal straw and grasses. The results of this study provided information on the concentrations and compositional patterns of PAHs, which is useful in understanding the effects, sources, fate and transport of PAHs in soils, as well as environmental quality management and environmental forensic studies.
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References
Saha, M. et al. Sources of sedimentary PAHs in tropical Asian waters: Differentiation between pyrogenic and petrogenic sources by alkyl homolog abundance. Mar. Pollut. Bull. 58, 189–200 (2009).
Yang, B. et al. Risk assessment and source of polycyclic aromatic hydrocarbons in agricultural soils of Huanghnai Plain, China. Ecotox. Environ. Safe. 84, 304–310 (2012).
Banger, K., Toor, G. S., Chirenje, T. & Ma, L. Polycyclic aromatic hydrocarbons in urban soils of different land uses in Miami, Florida. Soil Sediment Contam. 9, 231–243 (2010).
Tavakkoli, E., Juhasz, A., Donner, E. & Lombi, E. Characterising the exchangeability of phenanthrene associated with naturally occurring soil colloids using and isotopic dilution technique. Environ. Pollut. 199, 244–252 (2015).
Heywood, E., Wright, J. & Wienburg, C. L. Factors influencing national distribution of polycyclic aromatic hydrocarbons and polychlorinated biphenyls in British soils. Envir. Sci. Tech. 40, 7629–7635 (2006).
Morillo, E. et al. Characterization and sources of PAHs and potentially toxic metals in urban environments of Sevilla (Southern Spain). Water, Air Soil Pollut. 187, 41–51 (2008).
Abrahams, P. W. Soils: their implication to health. Sci. Total Environ. 291, 1–32 (2002).
Luo, X. S., Yu, S., Zhu, Y. G. & Li, X. D. Trace metal contamination in urban soils of China. Sci. Total Environ. 421-422, 17–30 (2012).
Peng, C. et al. Polycyclic aromatic hydrocarbons in urban soils of Beijing: Status, sources, distribution and potential risk. Environ. Pollut. 159, 802–808 (2011).
Chahal, M. K., Toor, G. S. & Brown, P. Trace metals and polycyclic aromatic hydrocarbons in an urbanized area of Florida. Soil Sediment Contam. 19, 1–16 (2010).
Olajire, A. A. & Brack, W. Polycyclic aromatic hydrocarbons in Niger Delta soil: Contamination sources and profiles. Int. J. Environ. Sci. Te. 2, 343–352 (2005).
Okoro, D. & Ikolo, O. A. Spatial variation and distribution of polycyclic aromatic hydrocarbons in soil. Bull. Chem. Soc. Ethiop. 21, 331–340 (2007).
Sojinu, O. S., Wang, J. Z., Sonibare, O. O. & Zeng, E. Y. Polycyclic aromatic hydrocarbons in sediments and soils from oil exploration areas of the Niger Delta, Nigeria. J. Hazard. Mater. 174, 641–647 (2010).
Maliszewska-Kordybach, B. Polycyclic aromatic hydrocarbons in agricultural soils in Poland; Preliminary proposal for criteria to evaluate the levels of soil contamination. Appl. Geochem. 11, 121–127 (1996).
Trapido, M. Polycyclic aromatic hydrocarbons in Estonia soil: contamination and profiles. Environ. Pollut. 105, 67–74 (1999).
Zhang, H. B. et al. Distribution and concentrations of PAHs in Hong Kong Soils. Environ. Pollut. 141, 107–114 (2006).
Bucheli, T. D., Blum, F., Desaules, A. & Gustafsson, O. Polycyclic aromatic hydrocarbon, black carbon, and molecular markers in soils of Switzerland. Chemosphere 56, 1061–1076 (2004).
Gocht, T., Moldenhauer, K. M. & Puttmann, W. Historical record of polycyclic aromatic hydrocarbons (PAH) and heavy metals in flood plain sediments from the Rhine Rivers (Hessiches Ried, Germany). Appl. Geochem. 16, 1707–1721 (2001).
Ma, L. L. et al. Polycyclic aromatic hydrocarbons in the surface soils from outskirts of Beijing, China. Chemosphere 58, 1355–1363 (2005).
Imran, H., Kim, J. G., Kim, K. S. & Park, J. S. Polyaromatic hydrocarbons (PAHs) levels from two industrial zones (Sihwa and Banwal) located in An-san City of the Korea Peninsula and their influence on lake. J. Appl. Sci. Environ. Manag. 9, 63–69 (2005).
Kumar, V. & Kothiyal, N. C. Distribution behavior of polycyclic aromatic hydrocarbons in roadside soil at traffic intercepts within developing cities. Int. J. Environ. Sci. Te. 8, 63–72 (2011).
Barran-Berdon, A. L. et al. Polycyclic aromatic hydrocarbons in soils from a brick manufacturing location in central Mexico. Rev. Int. Contam. Ambie. 28, 277–288 (2012).
Kumar, B. et al. Distribution of polycyclic aromatic hydrocarbons and polychlorinated biphenyls and their source identification urban roadside soils. Arch. Appl. Sci. Res. 4, 1906–1916 (2012).
Sojinu, O. S., Sonibare, O. O. & Zeng, E. Y. Concentrations of polycyclic aromatic hydrocarbons in soils of a mangrove forest affected by forest fire. Toxicol. Environ. Chem. 93, 450–461 (2011).
Meharg, A. A., Wright, J., Dyke, H. & Osborn, D. Polycyclic aromatic hydrocarbons (PAHs) dispersion and deposition to vegetation and soil following a large scale chemical fire. Environ. Pollut. 99, 29–36 (1998).
Spitzer, T. & Kuwatsuka, S. Residue levels of polynuclear aromatic compound surface from Japan. J. Chromatogr. 643, 305–309 (1993).
Li, X. et al. Polycyclic aromatic hydrocarbons in urban soil from Beijing China. J. Environ. Sci. 18, 944–950 (2006).
Man, Y. B. et al. Cancer risk assessments of Hong Kong soils contaminated by polycyclic aromatic hydrocarbons. J. Hazard. Mater. 261, 770–776 (2013).
Wang, X. T. et al. Polycyclic aromatic hydrocarbons (PAHs) in urban soils of the megacity Shanghai: occurrence, source apportionment and potential human health risk. Sci. Total Environ. 447, 80–89 (2013).
Yu, G. et al. Polycyclic aromatic hydrocarbons in urban soil of Hangzhou, status, distribution, sources and potential risk. Environ. Monit. Assess. 186, 2775–2784 (2014).
Vane, C. H. et al. Polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) in urban soils of Greater London, UK.Appl. Geochem. 51, 300–314 (2014).
Jiao, H. et al. Polycyclic aromatic hydrocarbons in the Daigang oilfield (China): Distribution, sources, and risk. Int. J. Environ. Res. Public Health 12, 5775–5791 (2015).
Hiller, E., Lachká, L., Jurkovic, L. & Vozár, J. Polyclicyclic aromatic hydrocarbons in urban soils from kindergartens and playgrounds in Bratislava, the capital city of Slovakia. Environ. Earth Sci. 73, 7174–7156 (2015).
Yang, Y., Woodward, L. A., Li, Q. X. & Wang, J. Concentrations, sources and risk assessment of polycyclic aromatic hydrocarbons in soils from Midway Atoll, North Pacific Ocean. PLoS ONE 9, e86441 (2014).
Tesi, G. O., Iwegbue, C. M. A., Emuh, F. N. & Nwajei, G. E. Ladgo Dam floods disaster of 2012: Polycyclic aromatic hydrocarbon Assessment of floodplain soils, lower reaches of River Niger, Nigeria. J. Environ. Qual. 45, 305–314 (2016).
Iwegbue, C. M. A. & Obi, G. Distribution, source and health risk assessment of polycyclic aromatic hydrocarbons in dust from urban environment in the Niger Delta, Nigeria. Hum. Ecol. Risk Assess. 22, 623–638 (2016).
Netherlands Ministry of Housing and Environment. Environmental quality objectives in the Netherlands: A review of environmental quality objectives and their policy framework in the Netherlands. Risk Assessment and Environmental Quality Division. Directorate for Chemicals, External Safety and Radiation Protection, Ministry of Housing Spatial Planning and the Environment, Netherlands (1994).
Jiang, Y. F. et al. Levels, composition profiles and sources of polycyclic aromatic hydrocarbons in urban soil of Shanghai, China. Chemosphere 75, 1112–1118 (2009).
Wilcke, W. Polycyclic aromatic hydrocarbons (PAHs) in soil. A review. J. Plant. Nutr. Soil. Sc. 163, 229–243 (2000).
Agarwal, T., Khillare, P. S., Shridhar, V. & Ray, S. Pattern, source and toxic potential of PAHs in agricultural soil of Delhi, India. J. Hazard. Mater. 163, 1033–1039 (2009).
Nam, J. J., Song, B. H., Eoma, K. C., Lee, S. H. & Smith, A. Distribution of polycyclic aromatic hydrocarbons in agricultural soil in South Korea. Chemosphere 50, 1281–1289 (2003).
Wang, Z. et al. Distribution and sources of polycyclic aromatic hydrocarbons from urban to rural soils: a case study in Dalian, China. Chemosphere 68, 965–971 (2007).
Nam, J. J. et al. PAHs in background soils from Western Europe: Influence of atmospheric deposition and soil organic matter. Chemosphere 70, 1596–1602 (2008).
Peng, C. et al. Polycyclic aromatic hydrocarbons in urban soils of Beijing: Status, sources, distribution and potential risk. Environ. Pollut. 159, 802–808 (2011).
Li, J. et al. Polycyclic aromatic hydrocarbon in water, sediment, soil and plants of the Aojiang River waterway in Wenzhow, China. J. Hazard. Mater. 173, 75–81 (2010).
Zeiger, E. Identification of rodent carcinogens and non-carcinogens using genetic toxicity tests: premises, promises, and performance. Regul. Toxicol. Pharm. 28, 85–95 (1998).
Zeiger, E. Mutagens that are not carcinogens: faulty theory or faulty tests? Mutation Research. Mutat. Res. Genet. Toxicol. Environ. Mutagen. 492, 29–38 (2001).
De Marini, D. M. et al. Bioassay-directed fractionation and salmonella mutagenicity of automobile and forklift diesel exhaust particles. Environ. Health Persp. 112, 814–819 (2004).
Seagrave, J. et al. Mutagenicity and in vivo toxicity of combined particulate and semi volatile organic fractions of gasoline and diesel engine emissions. Toxicol. Sci. 70, 212–216 (2002).
Orecchio, S. Assessment of polycyclic aromatic hydrocarbons (PAHs) in soil of a natural reserve (Isola delle Femmine) (Italy) located in front of a plant for the production of cement. J. Hazard. Mater. 173, 358–368 (2010).
Wang, W. et al. Concentration, sources and spatial distribution of polycyclic aromatic hydrocarbons in soils from Beijing, Tianjin and surrounding areas, North China. Environ. Pollut. 158, 1245–1251 (2010).
Qu, C. et al. Multi-pathway assessment of human health risk posed by polycyclic aromatic hydrocarbons. Environ. Geochem. Health. 37, 587–601 (2015).
Olawoyin, R., Grayson, R. L. & Okareh, O. T. Ecotoxicological and epidemiological assessment of human exposure to polycyclic aromatic hydrocarbons in the Niger Delta, Nigeria. Toxicol. Environ. Health Sci. 4, 173–185 (2012).
Chen, S. C. & Liao, C. M. Health risk assessment on human exposed to environmental polycyclic aromatic hydrocarbons pollution sources. Sci. Total Environ. 366, 112–123 (2006).
NYS DOH (New York States Department of Health). Hopewell precision area contamination: Appendix C-NYS DOH, In: Procedure for evaluating potential health risks for contaminants of concern (2007).
Kamal, A., Malik, R. N., Martellini, T. & Cincinelli, A. Sources, profile, and carcinogenic risk assessment for cohorts occupationally exposure to dust-bound PAHs in Lahore and Rawalpindi cities (Punjab province, Pakistan). Environ. Sci. Pollut. R. 22, 10580–10591 (2015).
Kamal, A., Malik, R. N., Martellini, T. & Cincinelli, A. Exposure to dust bound PAHs and associated carcinogenic risk in primitive and traditional cooking practices in Pakistan. Environ. Sci. Pollut. 22, 12644–12654 (2015).
Wang, W. et al. Polycyclic aromatic hydrocarbons (PAHs) in urban surface dust of Guangzhou, China: Status, sources and human health risk assessment. Sci. Total Environ. 409, 4519–4527 (2011).
US EPA (United States Environmental Protection Agency). Regional Screening Levels (RSL) Tables. In: Kansas Department of Health and Environment (KDHE)/ Bureau of Environmental Remediation (BER). Risk-based Standards for Kansas (RSK) Manual, 5th version (2010).
Yunker, M. B. et al. PAHs in the Faster River Basic: a critical appraisal of PAH ratios as indicators of PAH source and composition. Org. Geochem. 32, 489–515 (2002).
Guo, Z. et al. Occurrence and source of polycyclic aromatic hydrocarbons and n-alkanes in PM2.5 in the roadside environment of a major city in China. J. Hazard. Mater. 170, 888–894 (2009).
Katsoyiannis, A. & Breivik, K. Model-based evaluation of the use of polycyclic aromatic hydrocarbons molecular diagnostic ratios as a source identification tool. Environ. Pollut. 184, 488–494 (2014).
Kamal, A., Malik, R. N., Martellini, T. & Cincinelli, A. Cancer risk evaluation of kiln workers exposed to dust bound PAHs in Punjab province (Pakistan). Sci. Total Environ. 493, 562–570 (2014).
Kuang, Y. et al. Analysis of polycyclic aromatic hydrocarbons in tree rings of Masson pine (Pinus massoniana L.) from two industrial sites in the Pearl River Delta, South China. J. Environ. Monitor. 13, 2630–2637 (2011).
Mai, B. X. et al. Distribution of polycyclic aromatic hydrocarbons in the coastal region off Macao, China: assessment of input sources and transport pathways using compositional analysis. Environ. Sci. Technol. 37, 4855–4863 (2003).
Lee, B. K. & Dong, T. T. T. Toxicity and sources assignment of polycyclic aromatic hydrocarbons in road dust from urban residential and industrial areas in a typical industrial city in Korea. J. Mater. Cycles. Waste. 13, 34–42 (2011).
Simoneit, B. R. T. et al. Molecular marker study of extractable organic matter in aerosols from urban area of China. Atmos. Environ. 25A, 2111–2129 (1991).
Liu, M. et al. Characterization, identification of road dust PAHs in central Shanghai area, China. Atmospheric Environment 41, 8785–8795 (2007).
Barreca, S. et al. Determination of selected polyaromatic hydrocarbons by gas chromatography-mass spectrometry for the analysis of wood to establish the cause of sinking of an old vessel (Scauri wreck) by fire. Microchem. J. 117, 116–121 (2014).
Lv, J., Shi, R., Cai, Y. & Liu, Y. Assessment of polycyclic aromatic hydrocarbons (PAHs) pollution in soil of suburban areas in Tianjin, China. Bull. Hist. Chem. 85, 5–9 (2010).
Wang, D. G., Yang, M. & Jia, H. L. Polycyclic aromatic hydrocarbons in urban street dust and surface soil: Comparison of concentrations, profiles and sources. Arch. Environ. Contam. Toxicol. 56, 173–180 (2009).
Iwegbue, C. M. A., Nwajei, G. E. & Eguavoen, O. I. Impact of land use pattern on chemical properties of trace element in soils of rural, semi-urban and urban zones of the Niger Delta, Nigeria. Soil Sediment Contam. 21, 19–30 (2012).
Olabaniyi, S. B. & Owoyemi, F. B. Characterization by factor analysis of the chemical facies of groundwater in Deltaic plain sand aquifer of Warri, Western Niger Delta. Afr. J. Environ. Sci. Technol. 7, 73–81 (2006).
Iwegbue, C. M. A., Nwajei, G. E., Eguavoen, O. & Ogala, J. E. Chemical fractionation of some heavy metals in soil profiles in the vicinity of scrap dumps in Warri, Nigeria. Chem. Speciation Bioavailability 21, 99–110 (2009).
Iwegbue, C. M. A., Nwajei, G. E., Ogala, J. E. & Overah, C. L. Determination of trace metal concentrations in soil profiles of municipal waste dumps in Nigeria. Environ. Geochem. Health 32, 415–430 (2010).
Wilcke, W. et al. Polycyclic aromatic hydrocarbons (PAHs) in soils of the Moscow Region-concentrations, temporal trends, and small-scale distribution. J. Environ. Qual. 31, 1581–1590 (2005).
Pies, C., Yang, Y. & Hofmann, T. Distribution of polycyclic aromatic hydrocarbons (PAHs) in flood plain soils of Mosel and Saer River. J. Soils Sediments 7, 216–222 (2007).
Thompson, T. S., Clement, R. E., Thornton, N. & Luyt, J. Foundation and emission of PCDDs/PCDFs in the petroleum refining industry. Chemosphere 20, 1525–1532 (1990).
Nisbet, I. C. T. & LaGoy, P. K. Toxic equivalency factors (TEFs) for polycyclic aromatic hydrocarbons (PAHs). Regul. Toxicol. Pharm. 16, 290–300 (1992).
US EPA (United States Environmental Protection Agency). Risk-based concentration Table. U.S. Environmental Protection Agency, Region 111 (Third Quarter) (1993).
Larsen, J. C. & Larsen, P. B. Chemical carcinogens. In: Hester, E.E. and Harrison, R.R. (Eds). Air Pollution and Health. Cambridge, UK: The Royal Society of Chemistry (1998).
Durant, J. L. Human cell mutagenicity of oxygenated, nitrated and unsubstituted polycyclic aromatic hydrocarbons associated with urban aerosols. Mutat. Res. 371, 123–157 (1996).
US EPA (United States Environmental Protection Agency). Risk assessment guidance for superfund. Volume 1: Human Health Evaluation Manual (F, supplemental guidance for Inhalation Risk Assessment), https://www.epa.gov/sites/production/files/2015-09/ documents/rags_a.pdf (2009).
Risk Assessment guidance for superfund, Volume 1: Human Health Evaluation Manual EPA/se0/1-89/002, https://www.epa.gov/sites/production/files/2015-09/ documents/rags_a.pdf (1989).
{nitAssessment guidance for superfund. Volume 1: Human evaluation Manual (Part E, Supplemental guidance for defined risk assessment). EPA/540/R/99/005.7, https://www.epa.gov/sites/production/files/2015-09/documents/ rags_a.pdf (2001).}
Exposure Factors Handbook., https://www.epa.gov/ sites/production/files/2015-09/documents/rags_a.pdf (1997).
Mid Atlantic risk assessment Regional Screening Level (RSL) Summary Table (2012), http://www.epa.gov/regional superfund/prog/ (2013)
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Concentrations and Health Risk Assessment of Polycyclic Aromatic Hydrocarbons in Soils of an Urban Environment in the Niger Delta, Nigeria
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Iwegbue, C.M.A., Obi, G., Aganbi, E. et al. Concentrations and health risk assessment of Polycyclic aromatic hydrocarbons in Soils of an urban environment in the Niger Delta, Nigeria. Toxicol. Environ. Health Sci. 8, 221–233 (2016). https://doi.org/10.1007/s13530-016-0279-8
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DOI: https://doi.org/10.1007/s13530-016-0279-8