Heavy Metal (Cu, Zn, Pb) Contamination of Vegetables in Urban City: A Case Study in Lagos

Yusuf, K. A.; Oluwole, Surukite

doi:10.3923/rjes.2009.292.298

Cited by 38 publications

(26 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Vegetables act as neutralizing agents for acidic substances formed during digestion [2]. As human activities increases, especially with the application of modern technologies, pollution and contamination of the human food chain has become inevitable.…”

Section: Introductionmentioning

confidence: 99%

“…As human activities increases, especially with the application of modern technologies, pollution and contamination of the human food chain has become inevitable. The uptake of heavy metals by plants grown in polluted soils has been studied to a considerable extent [2,3]. Heavy metal contamination in vegetables cannot be underestimated as these food stuffs are important components of human diet.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Determinations of Some Heavy Metals in Vegetable Samples from Biu Local Government Area, Borno State, North Eastern Nigeria

Akan¹,

Kolo²,

Yikala³

et al. 2013

IJEMA

View full text Add to dashboard Cite

Abstract:The concentrations of some heavy metals and anions were determined in vegetable samples (spinach (Amaranth caudatus), lettuce (lactuca sativa), Cabbage (Brassica olemcea) and Onion (Allium cepa) which were freshly harvested within four agricultural locations(Mirnga, Zira, Wangaga and Malang) in Biu Local Government Area, Borno State, Nigeria. Metal concentrations in the vegetable samples were determined using Atomic Absorption Spectroscopy (AAS), while anions were determined by Smart spectrophotometer (model 2000). The results for vegetable samples showed that leaves contained much higher concentrations of heavy metals and anions than roots and stems.The concentrations of Cr detected in the vegetable samples ranged from 0.23 to 3.22mg/kg; 0.23 to 3.43mg/kg Mn; 0.23 to 3.45mg/kg Fe; 0.21 to 3.54mg/kg Ni; 0.25 to 4.56mg/kg Pb; 0.87 to 8.34mg/kg Zn; 0.34 to 5.44mg/kg Cd and 0.21 to 3.22mg/kg Cu. These valueswere higher than those recommended by Food and Agricultural Organization (FAO) and the WHO/EU joint limits. The high levels of these heavy metals place the consumers of these vegetable crops grown within the study area at health risk with time unless an urgent step is taken by relevant agencies to address this issue.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Determinations of Some Heavy Metals in Vegetable Samples from Biu Local Government Area, Borno State, North Eastern Nigeria

Akan¹,

Kolo²,

Yikala³

et al. 2013

IJEMA

View full text Add to dashboard Cite

show abstract

“…These metals can pose a significant health risk producing damaging effects on man and animals because there is no good mechanism for their elimination from the body (Arora et al, 2008;Yusuf et al, 2009). …”

Section: Introductionmentioning

confidence: 99%

Physicochemical Parameters and Heavy Metals Content of Soil Samples from Farms in Minna

Abdulhamid

Agbaji²,

Gimba³

et al. 2015

ILCPA

View full text Add to dashboard Cite

ABSTRACT. Physico-chemical properties and heavy metals content of soils were determined from seven farms in Minna, central Nigeria. Conventional analytical methods were employed to determine the physico-chemical properties and the heavy metals were analysed by atomic absorption spectrometry. The result showed that pH values ranged from 6.64 -7.70 indicating slight acidity to slight alkalinity of the soils. The total organic carbon values ranged from 0.95-2.25 % resulting in the presence of organic matter (1.63-3.87). The electrical conductivity values ranged from 17-37 µS/cm. The cation exchange capacity of the soil samples ranged from 3.68-5.15 cmol/kg. The heavy metals levels were in the following range: Cd (0.00018-0.00134 mg/g), Cu

show abstract

“…The concentrations of selected toxic elements (Pb, Cd, Ni, Fe, Cu and Zn) were determined in left femora of investigated mammals (n = 32) with the method of atomic absorption spectrophotometry (Perkin Elmer 4100 ZL) in a graphite furnace (Stawarz et al 2003;Yusuf and Oluwole 2009). The tissue samples were kept at −18 • C until analysis.…”

Section: Methodsmentioning

confidence: 99%

Heavy metal content in the femora of yellow-necked mouse (Apodemus flavicollis) and wood mouse (Apodemus sylvaticus) from different types of polluted environment in Slovakia

Martiniaková

Omelka

Jancova

et al. 2010

Environ Monit Assess

View full text Add to dashboard Cite

Heavy metal content in the femora of yellow-necked mouse (Apodemus flavicollis) and wood mouse (Apodemus sylvaticus) caught in different polluted biotopes of a low hill level in Slovakia (Nováky and Kolínany) was investigated in the present study. Length, weight and histological structure of mouse bones have also been analysed. According to our results, higher concentrations of Cd, Ni, Fe, Cu and Zn were detected in the femora of A. flavicollis from Kolínany area. Similarly, we observed higher concentrations of Ni, Fe, Cu and Zn in the bones of A. sylvaticus trapped at the same biotope. Significant differences were observed for concentrations of Ni and Zn in both species (P<0.05). The measured values for bone length and bone weight were higher in yellow-necked mice and wood mice from Nováky locality (P<0.01). Histological observation of thin sections from femora of A. flavicollis and A. sylvaticus revealed an outer and inner non-vascular lamellar layer around a poorly developed reticular layer. We did not identify demonstrable changes in qualitative histological characteristics of the femora between the mice (A. flavicollis and A. sylvaticus separately) from different types of polluted environment. Also, no statistically significant differences for all the measured variables of primary osteons' vascular canals were observed. Correlation analysis in yellow-necked mouse showed high positive relation between bone weight and bone length (r=0.66), area and perimeter (r=0.87) and perimeter and maximum diameter (r=0.87). In wood mouse, high positive correlation between bone weight and bone length (r=0.80), area and perimeter (r=0.72), area and maximum diameter (r=0.66) and perimeter and maximum diameter (r=0.74) was found. Our results demonstrate slightly elevated accumulation of some heavy metals in the femora of yellow-necked mouse and wood mouse from Kolínany biotope and thus give an evidence of a contamination of the environment.

show abstract

Heavy Metal (Cu, Zn, Pb) Contamination of Vegetables in Urban City: A Case Study in Lagos

Cited by 38 publications

References 26 publications

Determinations of Some Heavy Metals in Vegetable Samples from Biu Local Government Area, Borno State, North Eastern Nigeria

Determinations of Some Heavy Metals in Vegetable Samples from Biu Local Government Area, Borno State, North Eastern Nigeria

Physicochemical Parameters and Heavy Metals Content of Soil Samples from Farms in Minna

Heavy metal content in the femora of yellow-necked mouse (Apodemus flavicollis) and wood mouse (Apodemus sylvaticus) from different types of polluted environment in Slovakia

Contact Info

Product

Resources

About