1.Afshari, A., Khademi, H., and
Delavar, M.A. 2015. Evaluation of Heavy Metal Contamination Using Pollution Factor in Soil Land with Different Uses in the Central District of Zanjan Province. J. Water Soil Cons. 25: 4. 41-52. (In Persian)
2.Agrawal, M. 2003. Enhancing Food Chain Integrity: Quality Assurance Mechanism for Air Pollution Impacts on Food and Vegetable System. Final Technical Report (R7530) Submitted to Department for International Development, United Kingdom.
3.Al-Jassir, M.S., Shaker, A., and Khaliq, M.A. 2005. Deposition of heavy metals on green leafy vegetables sold on roadsides of Riyadh city, Saudi Arabia. Bulletin of Environmental Contamination and Toxicology. 75: 1020-1027.
4.Amer, N., Chami, Z.A., Bitar, L.A., Mondelli, D., and Dumontet, S. 2013. Evaluation of Atriplex halimus, Medicago lupulina and Portulaca oleracea for phytoremediation of Ni, Pb and Zn. Inter. J. Phytoremed. 15: 498-512.
5.Anwar, S., Nawaz, M.F., Gul, S., Rizwan, M., Ali, S., and Kareem, A. 2016. Uptake and distribution of minerals and heavy metals in commonly grown leafy vegetable species irrigated with sewage water. Environmental monitoring and assessment. 188: 541.
6.Azimi, S., Cambier, P., Lecuyer, I., and Thevenot, D. 2004. Heavy metal determination in atmospheric deposition and other fluxes in Northern France agrosystems. Water, Air and Soil Pollution. 157: 295-313.
7.Bahmani, B., Delavar, M.A., and Safari, Y. 2013. Geostatistical analysis and risk assessment of soil and plant contaminated by lead and zinc in Zanjan zinc industrial area. M.Sc. Thesis on Dept of Soil Science, University of Zanjan. (In Persian)
8.Bigdeli, M., and Seilsepour, M. 2008. Investigation of metals accumulation in some vegetables irrigated waste water in Shahre Rey-Iran and toxicological implications.
American-Eurasian J. Agric. Environ. Sci.4: 1. 86-92.
9.Bouyoucos, C.J. 1962. Hydrometer method improved for making particle size analysis of soil. Agron. J. 54: 464-465.
10.Burt, R. 2004. Soil survey laboratory methods manual: soil survey investigations report
No. 42 Version 4.0. Nebraska: United States Department of Agriculture, Natural Resources Conservation Service.
11.Cariny, T. 1995. The Reuse of Contaminated Land. John Wiley and Sons Ltd. Pub., USA, 219p.
12.Chary, N.S., Kamala, C.T., and Raj, D.S.S. 2008. Assessing risk of heavy metals from consuming food grown on sewage irrigated soils and food chain transfer. Ecotoxicology and environmental safety. 69: 3. 513-524.
13.Chen, M., Qin, X., Zeng, G., and Li, J. 2016. Impacts of human activity modes and climate on heavy metal “spread” in groundwater are biased. Chemosphere. 152: 439-445.
14.Chukwuji, M.A.I., Nwajei, G.E., and Osakwe, S.A. 2005. Recycling waste in agriculture: Efficacy of composting in ameliorating trace metal availability and soil borne pathogens. Europ. J. Sci. Res. 11: 572-577.
15.Cui, Y.J., Zhu, Y.G., Zhai, R.H., Chen, D.Y., Huang, Y.Z., Qiu, Y., and Liang, J.Z. 2004. Transfer of metalsfrom soil to vegetables in an area near a smelter in Nanning, China. Environment International. 30: 6. 785-791.
16.Diani, M., Mohammadi, J., and Naderi, M. 2009. Geostatistical Analysis of Pb, Zn and Cd concentration in soil of Sepahanshahr suburb (south of Esfahan). J. Water Soil. 23: 4. 67-76. (In Persian)
17.Geng, J., Wang, Y., and Luo, H. 2015. Distribution, sources and fluxes of heavy metals in the Pearl River Delta, South China. Marine pollution bulletin. 101: 914-921.
18.Gilmour, J.T., and Kittrick, J.A. 1979. Solubility and equilibria of zinc in a flooded soil.
Soil Sci. Soc. Amer. J. 43: 5. 890-892.
19.Heydari, H. 2003. Research project of Zanjan wind Atlas. Departmant of meterology of Zanjan Province. (In Persian)
20.Jo, O.W., and Nwabue, F.I. 2012. Heavy Metals effect due to Contamination of Vegetables from Enyigba Lead Mine in Ebonyi State, Nigeria, Environment and Pollution. 2: 1. 19-26.
21.Jones, Jr.J.B., and Case, V.W. 1990. Sampling, handling and analyzing plant tissue samples. Sampling handling and analyzing plant tissue samples. 3: 389-427.
22.Kabata-Pendias, A., and Pendias, H. 2001. Trace elements in soils and plants. Third Ed. CRC press. Boca Raton, London, 432p.
23.Kaznina, N.M., Titov, A.F., Laidinen, G.F., and Talanov, A.V. 2009. Setaria Viridis tolerance of high zinc concentrations. 36: 6. 575-581.
24.Lindsay, W.L., and Norvell, W.A. 1978. Development of DTPA soil test for zinc, iron, manganese and copper. Soil Science Society of America, Proceedings. 42: 421-428.
25.Mirshekali, H., Hadi, H., Khodaverdiloo, H., and Amirnia, R. 2014. Assessing the Efficiency of Sorghum (Sorghum Bicolor) and Common Lambsquarter (Chenopodium Album) in Phytoremediation of Zn from Soil. JWSS. 18: 67. 1-9.
26.Nazemi, S., Asgari, A.R., and Raei, M. 2010. Survey the amount of heavy metals in cultural vegetables in suburbs of Shahroud. Iran. J. Health Environ. 3: 2. 195-202. (In Persian)
27.Nikolić, D., Milošević, N., Živković, Ž., Mihajlović, I., Kovačević, R., and Petrović, N. 2011. Multi-criteria analysis of soil pollution by heavy metals in the vicinity of the Copper Smelting Plant in Bor (Serbia). J. Serbian Chem. Soc. 76: 4. 625-641.
28.Nimrozi, A., and Moaf Porian, G. 2011. Evaluation of heavy metals distribution in soil of Ab-Barik Industrial area in Shiraz province. The 31th meeting of Earth Sciences, Pp: 1-7.
(In Persian)
29.Nourian, M., Delavar, M.A., Shekari, P., and Abdollahi, S. 2012. Study of distribution of soil pollution by heavy metals with geostatistics and fuzzy clusterin g in Dizajabad area, Zanjan Province, J. Water Soil Cons.
21:1. 125-143.
30.Onder, S., Dursun, S., Gezgin, S., and Demirbas, A. 2007. Determination of heavy metal pollution in grass and soil of city centre green areas (konya, Turkey). Polish J. Environ. Stud. 16: 1. 145-154.
31.Parizanganeh, A., Hajisoltani, P., and Zamani, A. 2010. Assessment of heavy metal
pollution in surficial soils surrounding Zinc Industrial Complex in Zanjan-Iran. Procedia Environmental Sciences. 2: 162-166.
32.Raicevic, S., Perovic, V., and Zouboulis, A.I. 2009. Theoretical assessment of
phosphate amendments for stabilization of (Pb + Zn) in polluted soil. Waste Management. 29: 5. 1779-1784.
34.Richards, L.A. 1969. Diagnosis and Improvement of Saline and Alkali Soils. US Salinity Laboratory Staff. Agricultural Handbook. No 60. USDA. US, 160p.
35.Sanchez-Camazano, M., Sanchez-Martin, M.J., and Lorenzo, L.F. 1994. Lead and cadmium in soils and vegetables from urban gardens of Salamanca (Spain). Science of the Total Environment. 146: 163-168.
36.Shakeri, A., Modaberi, S., Ghasemi, M., and Sayare, A. 2008. Pollution and Distribution of heavy metals in soils of Hashtgerd area, North West of Tehran. The 34th National and the 2nd International Geosciences Congress, Pp: 1-5. (In Persian)
37.Sharma, R.K., Agrawal, M., and Marshall, F.M. 2007. Heavy metals contamination of soil and vegetables in suburban areas of Varanasi, India. Ecotoxicology and environmental safety. 66: 258-266.
38.Sharma, S., and Prasad, F.M. 2010. Accumulation of Lead and Cadmium in soil and vegetable crops along major highways in Agra (India). J. Chem. 7: 4. 1174-1183.
40.Sposito, G., Land, L.J., and Chang, A.C. 1982. Trace metal chemistry in aird-zone field
soils amended with sewage sludge: I. Fractionation of Ni, Cu, Zn, Cd and Pb in solid phases. Soil Sci. Soc. Amer. J. 46: 2. 260-264.
41.Tabande, L., and Taheri, M. 2016. Assessment of Pollution and Relationship between Heavy Metals Concentration in Soil and Leafy Vegetables in Zanjan Province. Iran. J. Soil Res.
30: 1. 49-60. (In Persian)
42.Türkdoğan, M.K., Kilicel, F., Kara, K., Tuncer, I., and Uygan, I. 2003. Heavy metals in soil, vegetables and fruits in the endemic upper gastrointestinal cancer region of Turkey. Environmental toxicology and pharmacology. 13: 3. 175-179.
44.Walkley, A., and Black, I.A. 1934. Examination of the degtjareff method determination
soil organic matter and a proposed modification of the chromic acid titration method.
Soil Science. 34: 29-38.
45.Zheng, N., Wang, Q., Zhang, X., Zheng, D., Zhang, Z., and Zhang, S. 2007. Population health risk due to dietary intake of heavy metals in the industrial area of Huludao city, China. Science of the Total Environment. 387: 1. 96-104.