Allen S.E., Grimshaw H.M., Rowland A.P., Chemical analysis In methods in plant ecology, edited by P.D. Moore and S.B. Chapman, Blackwell Scientific Publication, Oxford, London (1986).
Bahiru D.B., Teju E., Kebede T., Demissie N., Levels of some toxic heavy metals (Cr, Cd and Pb) in selected vegetables and soil around the eastern industry zone, central Ethiopia, African Journal of Agricultural Research 14 (2019) 92-101.
Balkhair K.S., and Ashraf M.A., Field accumulation risks of heavy metals in soil and vegetable crops irrigated with sewage water in the Western region of Saudi Arabia, Saudi Journal of Biological Sciences 23 (2016) 32-44.
Barone G., Storelli A., Garofalo R., Busco V.P., Quaglia N.C., Centrone G., Storelli M.M., Assessment of mercury and cadmium via seafood consumption in Italy: estimated dietary intake (EWI) and target hazard quotient (THQ), Food Additive and Contamination 32 (2015) 1277–1286.
Cobb G., Sands K., Waters M., Wixson B., Dorward-King E., Accumulation of heavy metals by vegetables grown in mine wastes, Environmental Toxicology and Chemistry 19 (2000) 600-607.
Cui Y.J., Zhu Y.G., Zhai R.H., Chen D.Y., Huang Y.Z., Qiu Y., Liang J.Z., Transfer of metals from soil to vegetables in an area near a smelter in Nanning, China, Environment International 30 (2004) 785-791.
Cui Y.J., Zhu Y.G., Zhai R.H., Chen D.Y., Huang Y.Z., Qiu Y., Liang J.Z., Exposure to metals mixtures and human impacts in a contaminated area in Nanning, China, Environment International 31 (2005) 778–783.
Doamekpor L.K., Darko R., Klake R.K, Samlafo V.B., Bobobee L.H., Akpabli C.K., Nartey V.K., Assessment of the contribution of road runoffs to surface water pollution in the New Juaben Municipality, Ghana, Journal of Geoscience and Environmental Protection 4 (2016) 173-190.
Ganjavi M., Ezzatpanah H., Givianrad M.H., Shams A., Effect of canned tuna fish processing steps on lead and cadmium contents of Iranian tuna fish, Food Chemistry 118 (2010) 525-528.
Huang M.L., Zhou S.L., Sun B., Zhao Q.G., Heavy metals in wheat grain: Assessment of potential health risk for inhabitants in Kunshan, China, Science of the Total Environment 405 (2008) 54-61.
Islam M.S., Ahmed M.K., Al-Mamun M.H., Determination of heavy metals in fish and vegetables in Bangladesh and health implications, Human Ecology and Risk Assessment Journal 21 (2014) 986-1006.
Islam M.S., Ahmed M.K., Proshad R., Ahmed S., Assessment of toxic metals in vegetables with the health implications in Bangladesh, Advances in Environmental Research 6 (2017) 241-254.
Jarup L., Hazards of heavy metal contamination, British Medical Bulletin 68 (2003) 167–182.
Jolly Y.N., Islam A., Akbar S., Transfer of metals from soil to vegetables and possible health risk assessment, SpringerPlus 2 (2013) 1-8.
Khan S., Cao Q., Zheng Y.M., Huang Y.Z., Zh Y.G., Health risks of heavy metals in contaminated soils and food crops irrigated with wastewater in Beijing, China, Environmental Pollution 152 (2008) 686–692.
Liu X., Zhang A., Ji C., Joseph S., Bian R., Li L., Pan G., Paz-Ferreiro J., Biochar’s effect on crop productivity and the dependence on experimental conditions-a meta-analysis of literature data, Plant Soil 373 (2013) 583–594.
Lu X., Wang L., Lei K., Contamination assessment of copper, lead, zinc, manganese and nickel in street dust of Baoji, NW China, Journal of Hazardous Materials 161 (2009) 1058–1062.
Malan M., Müller F., Cyster L., Raitt L., Aalbers J., Heavy metals in the irrigation water, soils and vegetables in the Philippi horticultural area in the Western Cape Province of South Africa, Environmental Monitoring and Assessment 187 (2015) 1–8.
Muller G., Index of geoaccumulation in sediments of the Rhine River, Geojournal 2 (1969) 108-118.
Naz A., Khan S., Muhammad S., Khalid S., Alam S., Siddique S., Ahmed T., Scholz M., Toxicity and bioaccumulation of heavy metals in spinach (Spinacia oleracea) grown in a controlled environment, International Journal of Environmental Research Public Health 12 (2015) 7400-7416.
Okpashi V.E., Uroko R.I., Uchenna N.O., Nwuke C.P., Ogbonnaya P., Heavy metals concentration in greens sold in Umuahia-Market, Nigeria: Assessment of risk to human health, Environmental Quality 34 (2019) 63-77.
Pirsaheb M., Fattahi N., Sharafi K., Khamotian R., Atafar Z., Essential and toxic heavy metals in cereals and agricultural products marketed in Kermanshah, Iran, and human health risk assessment, Food Additives and Contamination 9 (2016) 15-20.
Rattan R.K., Datta S.P., Chhonkar P.K., Suribabu K., Singh A.K., Long-term impact of irrigation with sewage effluents on heavy metal content in soils, crops and groundwater-a case study, Agriculture. Ecosystem and Environment 109 (2005) 310-322.
Sharma R., Agrawal M., Marshall F., Heavy metals in vegetables were collected from production and market sites of a tropical urban area of India, Food and Chemical Toxicology 47 (2007) 583-591.
Shirkhanloo H., Shirkhanloo N., Moussavinajarkola S.A., Farahani H., The evaluation and determination of heavy metals pollution in edible vegetables, water and soil in the south of Tehran province by GIS, Archives of Environmental Protection 41 (2015) 64-74.
Singh A., Sharma R.K., Agrawal M., Marshall F.M., Risk assessment of heavy metal toxicity through contaminated vegetables from POME irrigated area of Varanasi, India, Tropical Ecology 51 (2010) 375-387.
UI-Islam E., Yang X., He Z., Mahmood Q., Assessing potential dietary toxicity of heavy metals in selected vegetables and food crops. Journals of Zhejiang University- Science B 8 (2007) 1-13.
Wei B., Jiang F., Li W., Spatial distribution and contamination assessment of heavy metals in urban road dusts from Urumqi, N.W. China, Microchemical Journal 93 (2009) 147–152.
Yabe J., Nakayama M.M.S., Ikenaka Y., Muzandu K., Choongo K., Mainda G., Mabeta M., Ishizuka M., Umemura T., Metal distribution in tissues of free-range chickens near a lead-zinc mine in Kabwe, Zambia, Environmental Toxicology and Chemistry 32 (2013) 189–192.
Zafarzadeh A., Rahimzadeh H., Mahvi A.H., Health risk assessment of heavy metals in vegetables in an endemic esophageal cancer region in Iran, Health Scope 7 (2018) 1-8.
Zahra M., and Parisa Z., Assessing the health risk of some trace metals contents in vegetables sold in local markets of Tehran-Iran, International Journal of Farming and Allied Sciences 2 (2013) 434-438.
Zakir H.M., Sumi S.A., Sharmin S., Mohiuddin K.M., Kaysar S., Heavy metal contamination in surface soils of some industrial areas of Gazipur, Bangladesh. Bangladesh, Journal of Chemical, Biological and Physical Sciences 555 (2015) 2191–2206.
Zheng N., Wang Q.C., Zheng D.M., Health risk of Hg, Pb, Cd, Zn, and Cu to the inhabitants around Huludao Zinc Plant in China via consumption of vegetables, Science of The Total Environment 383 (2007) 81–89.
