Document Type: ORIGINAL RESEARCH PAPER

Authors

Department of Science Laboratory Technology, Rufus Giwa Polytechnic-1019, Owo, Ondo State, Nigeria

Abstract

BACKGROUND AND OBJECTIVES: Disinterred manures from dumpsites in the cities are believed to be readily available source for soil nutrient for backyard farming. Health hazards posed on human due to labile metals contaminants are not considered or evaluated before consumption. Three major municipal dumpsites from Okitipupa (Waste Management (OKA), Igodan (OKB), and Okitipupa Oil Mill Road (OKC)) were analyzed for the concentrations, forms of labile metals in the soil and also concentration in green vegetables from the sites. The objectives of the research were to investigate the labile metal concentration, forms of the labile metals in the soil and their accumulation in plants from these major urban dumpsites. METHODS: Dried and digestedSoil and vegetable samples from the sites were analyzed for total concentration of labile metals and their forms through speciation in the soil were equally quantified. Concentrations from sample solutions were determined by Atomic Absorption Spectrophotometer.
FINDING: Labile metals concentrations from the soilof Waste Management Dumpsite (OKA), IgodanDumpsite (OKB) and Okitipupa Oil Mill Road Dumpsite (OKC) indicated that Cadm
ium (Cd) values range from87.453mg/kg -106.500mg/kg). Copper (Cu) in the three samples ranged between 3.100-5.510mg/kg, which are significantly low and beyond the toxicity level as well as cobalt (Co). Chromium (Cr) was higher in OKA (22.980mg/kg) and OKC (10.560mg/kg) and least in OKB (2.900mg/kg).Iron was the most abundant ranging from 3690.000-6780.000mg/kg, followed by zinc ranging from385.000-2880.000mg/kg. Speciation of the labile metal indicate that the metal exist mostly in the inert fraction and easily absorbed by plant.
CONCLUSION: The concentrations of the most labile metals in soil samples were high and majorly exist in inert fraction after speciation. Also, the concentrations in the plants were almost half of the concentration in the soil which indicated that they are not desirable for human consumption due to their toxicity level.

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Adefemi, S.O.; Awokunmi, E.E., (2010). Determination of physico-chemical parameters and heavy metals in water samples from Itaogbolu area of Ondo-State, Nigeria. Afric. J. Environ. Sci. Tech., 4(3): 145-148 (4 pages).

Adekola, F.A.; Eletta, O.O.A., (2007). A study of heavy metal pollution of Asa River, Ilorin. Nigeria; trace metal monitoring and geochemistry. Environ. Monit. Assess., 125:157-163 (7 pages).

AOAC (2000). Official Methods of Analysis. 17th Edition, the Association of Official Analytical Chemists, Gaithersburg, MD, USA.

Chen,G., (1990). Effects of heavy metals on the growth of cucumber seedlings. Chin. Bull. Bot., 7 (1): 34-39 (6 pages).

Chirenje, T.; Ma, L.Q.; Reeves, M.; Szulczewski, M., (2004). Lead distribution in near surface soils of two Florida cities: Gainesville and Miami, Geo., 119(1-2): 113-120 (8 pages).

Environment Agency, (2014). Policy: Improving Water Quality.

Fagbote, E.O.; Olanipekun, E.O., (2010). Evaluation of the status of heavy metal pollution of soil and plant of Agbabu bitumen deposit area, Nigeria. Am-Euras, J. Sci. Res., 5(4): 241-248 (8 pages).

Guo-hang, Y.; Guang-yun, Z.;  He-lian, L.; Xue-mei, H.; Ju-mei, L.; Yi-bing, M., (2018). Accumulation and bioavailability of heavy metals in a soil-wheat/maize system with long-term sewage sludge amendments. J. Integr. Agric., 17(8): 1861-1870 (10 pages).

Hong, R.; Rang, G.; Liu, D., (1991). Effects of Cd on the growth and physiological biochemical reaction of wheat seedlings. Acta Agric. BoreliSinica., 6(3): 70-75 (6 pages).

Liu,D.; Jiang,W.; Li, H., (2000). Effects of cadmium on root growth and ultrastructural alterations in the root tip cells of garlic (Allium sativum L.). Acta Agric. Boreali-Sinica., 15 (3): 66-71 (6 pages).

Ma,C.; Hong,H., (1998). Preliminary studies on the effects of Hg z§ on the germination and growth of wheat seedlings. J. Acta Bot. Eco., 22(4): 373-378 (6 pages).

Marian, A.N.; Ephraim, J.H., (2009). Physiochemical study of water from selected boreholes in the Bosomtwi-Atwima-Kwanwoma District of Ghana. Specific J. Sci. Tech., 10(2): 643-648 (8 pages).

Mo, W.; Li, M., (1992). Effects of Cd2+ on the cell division of root tip in bean seedlings. Bull. Bot., 9(3): 30-34 (5 pages).

Olajire, A.A.; Imeokparia, F.E., (2000). A study of the water quality of the Osun River: Metal monitoring and geochemistry. Bull.Chem. Soc. Ethiop., 14 (1): 1-8 (8 pages).

Qin, T.; Wu, Y.; Wang, X., (1994). Effects of Cd, Pb and their interaction pollution on Brassica cbinensis. Acta Eco.Sinica., 14: 46-50 (5pages).

Qinsong, X.; Guoxin, S., (2000). The toxic effects of single Cd and interaction of Cd with Zn on some physiological index of [Oenanthejavanica (Blume) DC]. Nanjing shi da xuebao. Zi ran kexue ban= Nanjing ShidaXuebao, 23(4): 97-100 (4 Pages).

Rahimzadeh, R.M.; Rahimzadeh, R.M.; Moghadamnia, A.P.; Sohrab, K., (2017). Cadmium Toxicity and Treatment: an update. Casp. J. Int. Med., 8(3): 135-145 (11 pages).

Saracoglu, S.; Tuzen, M.; Soylak, M., (2009). Evaluation of trace element contents of dried apricot samples from Turkey. J.  Hazard. Mat., 156: 647-652 (6 pages).

Sharma, R.K.; Agrawal, M.; Marshall,F.M., (2008).  Atmospheric Deposition of Heavy Metals (Cu, Zn, Cd and Pb) in Varanasi City, India. Environ. Monit. Assess, 142: 269-278 (10 pages).

Sharma, R.K.; Agrawal, M.; Marshall, F., (2006). Heavy metals contamination in vegetables grown in wastewater irrigated areas of Varanasi, India. Bull Environ. Cont. Toxicol; 77: 312-318 (7 pages).

Sharma, R.K.; Agrawal, M.; Marshall, F.M., (2009). Heavy metals in vegetables collected from production and market sitesof Tropical Area of India. Food Chem. Toxicol., 47: 583-591 (9 pages).

Shuiping, C., (2003). Special reference to literature published in Chinese journals. Environ. Sci. Pollut. Res., 10(4): 256-264 (9 pages).

Singh, R.P.; Agrawal, M., (2010). Variation in heavy metals accumulation, growth and yield of rice plants grown at different sewage sludge amendment rates. Ecotox. Environ. Safe., 73: 641-663 (23 pages).

Srivastava, K.P.; Singh, V., (2012). Impact of air pollution on pH of soil of Saran, Bihar, India. Res. J. Recent Sci., 1(4): 9-13 (5 pages).

Tessier, A.; Campbell, P.G.; Bisson, M.J.A.C., (1979). Sequential extraction procedures for the speciation of trace metals. Anal. Chem., 51(7): 844-851 (8 pages).

Tripathi, Y.B.; Singh, V.P., (1996). Role of tamrabhasma and ayurvedic preparation in management of lipid peroxidation in liver of albino rats. Indian J. Exp. Biol., 34: 6-70 (65 pages).

USEPA, (2000). Introduction to phytoremediation. EPA 600/R-99/107. U.S. Environmental Protection Agency, Office of Research and Development, Cincinnati, O.H.

Wang, H., (1990). Fundamental ions of pollution biology. Yunnan University Press, Kungming, Yunan, 71-148 (77 pages).

Wang, K., (1996). Effects of cadmium on the growth of different genetic rice. Rural Ecolog. Environ., 12 (3): 18-23 (6 pages).

Wong, J.W.; Li, G.X.; Wong, M., (2003). The Growth of Brassica Chinensis in heavy-metal- contaminated sewage sludge compost from Hong Kong. Bioresour. Tech., 58: 309-313 (5 pages).

World Health Organization, (2019). Preventing disease through healthy environments: exposure to cadmium: a major public health concern (No. WHO/CED/PHE/EPE/19.4. 3). World Health Organization.

Xu, J.; Yang, J., (1995). Heavy metals in the terrestrial ecosystem. China Environ. Sci. Publisher, Beijing, 24-36 (13 pages).

Xue, C.; Zhang, Z.; Meng, Z., (2000). Studies on effects of complex sludge compost applying to highway green belt II. Soil chemistry, plant nutrients and environmental effects. Agro Environ. Prot., 19 (5): 263-266 (4 pages).