[Abrahim, G.M.S. & Parker R.J. (2008). Assessment of heavy metal enrichment factors and the degree of contamination in marine sediments from Tamaki Estuary Auckland, New Zealand. Environ. Monit. Assess., 136, 227−238. DOI : 10.1007/s10661-007-9678-2.]Search in Google Scholar
[Anju, M. & Banerjee D.K. (2012). Multivariate statistical analysis of heavy metals in soils of a Pb-Zn mining area, India. Environ. Monit. Assess., 184, 4191−4206. DOI : 10.1007/s10661-011-2255-8.]Search in Google Scholar
[Boularbah, A., Schwartz, C., Bitton, G. & Morel J.L. (2006). Heavy metal contamination from mining sites in South Morocco: 1. Use of a biotest to assess metal toxicity of tailings and soils metal accumulation and toxicity in plants. Chemosphere, 63, 802−810. doi: 10.1016/j.chemosphere.2005.07.079.10.1016/j.chemosphere.2005.07.079]Search in Google Scholar
[Cao, R.X., Ma, L.Q., Chen, M., Singh, S.P. & Harris W.G. (2003). Phosphate-induced metal immobilization in a contaminated site. Environ. Pollut., 122, 19−28. doi: 10.1016/S0269-7491(02)00283-X.10.1016/S0269-7491(02)00283-X]Search in Google Scholar
[CCME (Canadian Council of Ministers of the Environment), 1999 and updates. Canadian Environmental Quality Guidelines. Canadian Council of Ministers of the Environment, Winnipeg. Published 1999, updated through 2014. Available online at http://ceqg-rcqe.ccme.ca/ ]Search in Google Scholar
[Chen, S.B., Zhua, Y.G. & Ma Y.B. (2006). The effect of grain size of rock phosphate amendment on metal immobilization in contaminated soils. J. Hazard. Mater., 134, 74−79. doi: 10.1016/j.jhazmat.2005.10.027.10.1016/j.jhazmat.2005.10.027]Search in Google Scholar
[Cheng, H.X., Li, M., Zhao, C.D., Li, K., Peng, M., Qin, A.H. & Cheng X.M. (2014). Overview of trace metals in the urban soil of 31 metropolises in China. Journal of Geochemical Exploration, 139, 31−52. doi: 10.1016/j. gexplo.2013.08.012.]Search in Google Scholar
[Dauvalter, V. & Rognerud S. (2001). Heavy metal pollution in sediments of the Pasvik River drainage. Chemosphere, 42, 9−18. doi: 10.1016/S0045-6535(00)00094-1.10.1016/S0045-6535(00)00094-1]Search in Google Scholar
[Fairbrother, A., Wenstel, R., Sappington, K. & Wood W. (2007). Framework for metals risk assessment. Ecotoxicol. Environ. Saf., 68, 145−227. doi: 10.1016/j.ecoenv.2007.03.015.10.1016/j.ecoenv.2007.03.015]Search in Google Scholar
[FAOUN , (Food and Agriculture Organization of the United Nations) (1970). Physical and chemical methods of soil and water analysis. FAO Soils Bulletin, 10, 1−275.]Search in Google Scholar
[Freitas, H., Prasad, M.N.V. & Pratas J. (2004). Plant community tolerant to trace elements growing on the degraded soils of Sao Domingos mine in the south east of Portugal: environmental implications. Environ Int., 30, 65−72. doi: 10.1016/S0160-4120(03)00149-1.10.1016/S0160-4120(03)00149-1]Search in Google Scholar
[Håkanson, L. (1980). Ecological risk index for aquatic pollution control: a sediment logical approach. Water Research, 14, 975−1001. doi: 10.1016/0043-1354(80)90143-8.10.1016/0043-1354(80)90143-8]Search in Google Scholar
[Håkanson, L. (1988). Metal monitoring in coastal environments. In U. Seeliger, L.D. Lacerda & S.R. Patchineelam (Eds.), Metals in coastal environments of Latin America (pp. 240−257). Berlin: Springer-Verlag.]Search in Google Scholar
[Homa, J., Niklinska, M. & Plytycz B. (2003). Effect of heavy metals on coelomocytes of the earthworm Allolobophora chlorotica. Pedobiologia, 47, 640−645. doi: 10.1078/0031-4056-00239.10.1078/0031-4056-00239]Search in Google Scholar
[Houba, V.J.G, Novozamsky, I., Lexmond, T.M. & Van Der Lee J.J. (1990). Applicability of 0.01 M CaCl2 as a single extraction solution for the assessment of the nutrient status of soils and other diagnostic purposes. Commun. Soil Sci. Plant Anal., 21, 2281−2290. DOI : 10.1080/00103629009368380.]Search in Google Scholar
[Iavazzo, P., Ducci, D., Adamo, P., Trifuoggi, M., Migliozzi, A. & Boni M. (2012). Impact of past mining activity on the quality of water and soil in the high Moulouya Valley (Morocco). Water Air Soil Pollut., 223, 573−589. DOI : 10.1007/s11270-011-0883-9.]Search in Google Scholar
[Jiang, J.B., Wang, J., Liu, S.Q., Lin, C.Y., He, M.C. & Liu X.T. (2013). Background, baseline, normalization, and contamination of heavy metals in the Liao River Watershed sediments of China. Journal of Asian Earth Science, 73, 87−94. doi: 10.1016/j.jseaes.2013.04.014.10.1016/j.jseaes.2013.04.014]Search in Google Scholar
[Khan, S., Cao, Q., Zheng, Y.M., Huang, Y.Z. & Zhu Y.G. (2008). Health risks of heavy metals in contaminated soils and food crops irrigated with wastewater in Beijing, China. Environ. Pollut., 152, 686−692. doi: 10.1016/j. envpol.2007.06.056.]Search in Google Scholar
[Komárek, M., Vanĕk, A. & Ettler V., (2013). Chemical stabilization of metals and arsenic in contaminated soils using oxides. Environ. Pollut., 172, 9−22. doi: 10.1016/j.envpol.2012.07.045.10.1016/j.envpol.2012.07.04522982549]Search in Google Scholar
[Lee, C.S.L., Li, X., Shi, W., Cheung, S.C. & Thornton I. (2006). Metal contamination in urban suburban, and country park soils of Hong Kong: a study based on GIS and multivariate statistics. Sci. Total Environ., 356, 45−61. doi: 10.1016/j.scitotenv.2005.03.024.10.1016/j.scitotenv.2005.03.02415913711]Search in Google Scholar
[Li, P., Lin, C., Cheng, H., Duan, X. & Lei K. (2015). Contamination and health risks of soil heavy metals around a lead/ zinc smelter in southwestern China. Ecotoxicol. Environ. Saf., 113, 391−399. doi: 10.1016/j.ecoenv.2014.12.025.10.1016/j.ecoenv.2014.12.02525540851]Search in Google Scholar
[Lu, C.A., Zhang, J.F., Jiang, H.M., Yang, J.C., Zhang, J.T., Wang, J.Z. & Shan H.X. (2010). Assessment of soil contamination with Cd, Pb and Zn and source identification in the area around the Huludao Zinc Plant. J. Hazard. Mater., 182, 743−748. doi: 10.1016/j.jhazmat.2010.06.097.10.1016/j.jhazmat.2010.06.09720638790]Search in Google Scholar
[Lu, X.W., Zhang, X.L., Li, L.Y. & Chen H. (2014). Assessment of metals pollution and health risk in dust from nursery schools in Xi’an, China. Environ. Res., 128, 27−34. doi: 10.1016/j.envres.2013.11.007.10.1016/j.envres.2013.11.00724407476]Search in Google Scholar
[Luo, C., Yang, R., Wang, Y., Li, J., Zhang, G. & Li X. (2012a). Influence of agricultural practice on trace metals in soils and vegetation in the water conservation area along the East River (Dong jiang River), South China. Sci. Total Environ., 431, 26−32. doi: 10.1016/j.scitotenv.2012.05.027.10.1016/j.scitotenv.2012.05.02722664535]Search in Google Scholar
[Luo, W., Lu, Y., Giesy, J.P., Wang, T., Shi, Y., Wang, G. & Xing Y. (2007). Effects of land use on concentrations of metals in surface soils and ecological risk around Guanting reservoir, China. Environ. Geochem. Health, 29, 459−471. DOI :10.1007/s10653-007-9115-z10.1007/s10653-007-9115-z17805979]Search in Google Scholar
[Luo, X.S., Yu, S. & Li X.D. (2012b). The mobility, bioavailability, and human bioaccessibility of trace metals in urban soils of Hong Kong. Applied Geochemistry, 27, 995−1004. doi: 10.1016/j.apgeochem.2011.07.001.10.1016/j.apgeochem.2011.07.001]Search in Google Scholar
[Ma, X., Zuo, H., Tian, M., Zhang, L., Meng, J., Zhou, X., Min, N., Chang, X. & Liu L. (2016). Assessment of heavy metals contamination in sediments from three adjacent regions of the Yellow River using metal chemical fractions and multivariate analysis techniques. Chemosphere, 144, 264−272. doi: 10.1016/j.chemosphere.2015.08.026.10.1016/j.chemosphere.2015.08.02626363329]Search in Google Scholar
[Maanan, M., Saddik, M., Maanan, M., Chaibi, M., Assobhei, O. & Zourarah B. (2014). Environmental and ecological risk assessment of heavy metals in sediments of Nador lagoon, Morocco. Ecological Indicators, 48, 616−626. doi: 10.1016/j.ecolind.2014.09.034.10.1016/j.ecolind.2014.09.034]Search in Google Scholar
[Muller, G. (1969). Index of geoaccumulation in sediments of the Rhine River. Geophysical Journal of the Royal Astronomical Society, 2(3), 108−118.]Search in Google Scholar
[NEN 5704 (1996). Soil-sample preparation of soil-extraction with a calcium chloride solution (0.01 mol/L).]Search in Google Scholar
[Nemerow, N.L. (1985). Stream, lake, estuary, and ocean pollution. New York: Van Nostrand Reinhold Publishing Co.]Search in Google Scholar
[Nouri, M., Gonçalves, F., Sousa, J.P., Römbke, J., Ksibi, M., Pereira, R. & Haddioui A. (2013). Metal uptake by spontaneous vegetation in an abandoned iron mine from a Semiarid area in Center Morocco: Implications for phytoextraction. Environmental Research, Engineering and Management, 64, 59−71. DOI : 10.5755/j01. erem.64.2.3866.]Search in Google Scholar
[Nouri, M., Gonçalves, F., Sousa, J.P., Römbke, J., Ksibi, M., Pereira, R. & Haddioui A. (2014). Metal concentrations and metal mobility in Ait Ammar Moroccan mining site. Journal of Materials Environmental Science, 5(1), 271−280. http://www.jmaterenvironsci.com]Search in Google Scholar
[Pastor, J. & Hernandez A.J. (2012). Heavy metals salts and organic residues in old solid urban waste landfills and surface waters in their discharge areas: determinants for restoring their impact. J. Environ. Manag., 95(Suppl.), S42−S49. doi: 10.1016/j.jenvman.2011.06.048.10.1016/j.jenvman.2011.06.04821764209]Search in Google Scholar
[Pejman, A., Bidhendi, G.N., Ardestani, M., Saeedi, M. & Baghvan A. (2015). A new index for assessing heavy metals contamination in sediments: A case study. Ecological Indicators, 58, 365−373. doi: 10.1016/j.ecolind.2015.06.012.10.1016/j.ecolind.2015.06.012]Search in Google Scholar
[Posthuma, L., Eijsackers, H.J.P., Koelmans, A.A. & Vijver M.G. (2008). Ecological effects of diffuse mixed pollution are site-specific and require higher-tier risk assessment to improve site management decisions: A discussion paper. Sci. Total Environ., 406, 503−517. doi: 10.1016/j.scitotenv.2008.06.065.10.1016/j.scitotenv.2008.06.06518757078]Search in Google Scholar
[Reddy, K.R. & DeLaune R.D. (2004). Biogeochemistry of Wetlands: Science and applications. Boca Raton: CRC Press.]Search in Google Scholar
[Scazzola, R., Avezzu, S., Biancotto, R., Chiamenti, E., Chiozzotto, E., Gerotto, M., Palonta, M. & Roiter S. (2003). Assessment of heavy metal background values in the soils of inland coastal areas of Venice, Italy. Ann. Chim., 93, 465−470.]Search in Google Scholar
[Stafilov, T., Šajn, R., Pančevski, Z., Boev, B., Frontasyeva, M.V. & Strelkova L.P. (2010). Heavy metal contamination of topsoils around a lead and zinc smelter in the Republic of Macedonia. J. Hazard. Mater., 175, 896−914. doi: 10.1016/j.jhazmat.2009.10.094.10.1016/j.jhazmat.2009.10.09419944530]Search in Google Scholar
[Taylor, S.R. & McLennan S.M. (1995). The geochemical evolution of the continental crust. Rev. Geophys., 33, 241−265. DOI : 10.1029/95RG00262.]Search in Google Scholar
[Tomlinson, D.L., Wilson, J.G., Harris, C.R. & Jeffrey D.W. (1980). Problems in the assessment of heavy-metal levels in estuaries and the formation of a pollution index. Helgol. Meeresunter., 33, 566−575. DOI : 10.1007/BF02414780.]Search in Google Scholar
[Van Hullebusch, E.D., Lens, P.N.L. & Tabak H.H. (2005). Developments in bioremediation of soils and sediments polluted with metals and Radionuclides. 3. Influence of chemical speciation and bioavailability on contaminants Immobilization/Mobilization bio-processes. Reviews in Environmental Science and Biotechnology, 4, 185−212. DOI : 10.1007/s11157-005-2948-y.]Search in Google Scholar
[Walkley, A. & Black I.A. (1934). An examination of Degtjareff method for determining organic carbon in soils: effect of variations in digestion conditions and of inorganic soil constituents. Soil Sciences, 63, 251-263. DOI : 10.1097/00010694-194704000-00001.10.1097/00010694-194704000-00001]Search in Google Scholar
[Wang, Q., Xie, Z. & Li F. (2015). Using ensemble models to identify and apportion heavy metal pollution sources in agricultural soils on a local scale. Environ. Pollut., 206, 227−235. doi: 10.1016/j.envpol.2015.06.040.10.1016/j.envpol.2015.06.04026188913]Search in Google Scholar
[Wen, H., Zhang, Y., Cloquet, C., Zhu, C., Fan, H. & Luo C. (2015). Tracing sources of pollution in soils from the Jinding Pb-Zn mining district in China using cadmium and lead isotopes, Applied Geochemistry, 52, 147−154. doi: 10.1016/j.apgeochem.2014.11.025.10.1016/j.apgeochem.2014.11.025]Search in Google Scholar
[Wu, S., Xia, X.H., Lin, C.Y., Chen, X. & Zhou C.H. (2010). Levels of arsenic and heavy metals in the rural soils of Beijing and their changes over the last two decades (1985−2008). J. Hazard. Mater., 179, 860−868. doi: 10.1016/j. jhazmat.2010.03.084.]Search in Google Scholar
[Wu, S., Peng, S., Zhang, X., Wu, D., Luo, W., Zhang, T., Zhou, S., Yang, G., Wan, H. & Wu L. (2014). Levels and health risk assessments of heavy metals in urban soils in Dongguan, China. Journal of Geochemical Exploration, 148, 71−78. doi: 10.1016/j.gexplo.2014.08.009.10.1016/j.gexplo.2014.08.009]Search in Google Scholar
[Zhang, J. & Liu C.L. (2000). Riverine composition and estuarine geochemistry of particulate metals in Chinaweathering features, anthropogenic impact and chemical fluxes. Estuar. Coast. Shelf Sci., 54, 1051−1070. doi: 10.1006/ecss.2001.0879.10.1006/ecss.2001.0879]Search in Google Scholar
[Zhang, C., Qiao, Q., Piper, J.D. & Huang B. (2011). Assessment of heavy metal pollution from a Fe-smelting plant in urban river sediments using environ-mental magnetic and geochemical methods. Environ. Pollut., 159, 3057−3070. doi: 10.1016/j.envpol.2011.04.006.10.1016/j.envpol.2011.04.00621561693]Search in Google Scholar
[Zhang, H., Liu, G., Shi, W. & Li J. (2014). Soil heavy metal contamination and risk assessment around the Fenhe Reservoir, China. Bull. Environ. Contam. Toxicol., 93, 182−186. DOI : 10.1007/s00128-014-1304-8.]Search in Google Scholar
[Zhou, P., Zhao, Y., Zhao, Z. & Chai T. (2015). Source mapping and determining of soil contamination by heavy metals using statistical analysis, artificial neural network, and adaptive genetic algorithm. Journal of Environmental Chemical Engineering, 3(4A), 2569−2579. DOI : 10.1016/j.jece.2015.08.003.]Search in Google Scholar