Using soil heavy metal enrichment and mobility factors to determine potential uptake by vegetables

Ngole, V. M.

doi:10.17221/125/2010-pse

Cited by 29 publications

(13 citation statements)

References 21 publications

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“…Similar studies by Lorestani et al (2011) on some native plants in Iran showed the plants had EF values of Cu, Zn and Fe below 3. The Enrichment factors of Cu as indicators of uptake in spinach and carrots grown on sludge amended luvisol showed that Cu EF in soil increased with sludge applications (Ngole 2011) which is not the case in this study. With regards to Magnesium, the EF values of the shoots varied significantly from each other.…”

Section: Discussioncontrasting

confidence: 86%

The effect of oil palm decanter cake on the accumulation of nutrients and the stomatal opening of Solanum melongena (brinjal) plants

Embrandiri

Rupani

Ismail

et al. 2016

Int J Recycl Org Waste Agricult

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Purpose Research has shown that oil palm decanter cake (DC) serves as a potential source of nutrients for plant growth. This study therefore investigated the applicability of decanter cake (DC) as an amendment to soil for the growth of Solanum melongena (brinjal) at three ratios 10, 20, 30 % DC and suitable controls (0 %). Methods Seeds of brinjal were sown in soils amended with decanter cake at 10, 20, 30 % w/w and 0 % as control. Nutrient enrichment factors were calculated from the concentration of selected metals (Cu, Ca, Fe, Zn and Mg) in plant parts. The scanning electron micrographs were also taken to measure the stomatal opening/closing due to the effect of excess nutrients on the leaf structure. Results Enrichment factor (EF) values in this study were all below 3 indicating low enrichment of metal ions from soil to plants. SEM studies of the leaf epidermis of the test plants revealed the closure of guard cells with increasing decanter cake treatments. Conclusions Decanter cake at 20 % amendments with soil could serve as a source of soil amendment for cultivation of S. melongena plants.

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Section: Discussioncontrasting

confidence: 86%

The effect of oil palm decanter cake on the accumulation of nutrients and the stomatal opening of Solanum melongena (brinjal) plants

Embrandiri

Rupani

Ismail

et al. 2016

Int J Recycl Org Waste Agricult

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“…Thus, acidic soils favour the accumulation of metals by vegetables than neutral or alkaline soils. The accumulation of Cr and Fe by plants is also higher in acidic soils due to their availability in such soils among other factors [23]. An earlier research in the study area by Free Library [24] has shown that the soil is quite acidic and porous with a pH range of 4 to 6.…”

Section: Discussionmentioning

confidence: 98%

Health Risk Analysis of Heavy Metals (Cr, Fe, Hg & Ni) in Edible Vegetables in Yala Urban Area of Cross River State, Nigeria

Akpe

Ashishie

Inezi

2019

IRJPAC

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Aim: The aim of the study was to determine concentration of heavy metals in the soil and edible vegetables planted consumed Yala Urban Area of Cross River State, Nigeria, ascertained the level of metals contamination and the possible health risk or implication. Sampling: Forty eight (48) soil and edible vegetable samples (6 of each kind of the 8 vegetables) were collected randomly from Yala Urban Area of Cross River State. The eight vegetables considered for the study were Amaranthus spp., Corchorus olitorius, Murraya koenigii, Ocimum grattissimum, Solanum melongena, Talinum triangulare, Telferia occidentalis and Vernonia amygdalina. They were collected between January and March for dry season, and July and September for rainy season of the year. Methodology: The samples were digested and analyzed for the Cr, Fe, Hg and Ni (heavy metals) concentration using Flame Atomic Absorption Spectrometer (AAS) in the Chemistry Laboratory, University of Calabar. Results: The results showed that the mean concentration of the metals in the soil in mgkg-1 ranged from (0.063 - 0.108) and (0.049 - 0.104) in rainy and dry seasons respectively for Cr, and (0.026 - 0.124) and (0.013 - 0.119) in rainy and dry season respectively for Fe. The mean concentration accumulated by the vegetables ranged from (0.037- 0.063) and (0.029 - 0.066) in rainy and dry season respectively for Cr and (0.012- 0.071) and (0.008- 0.086) in rainy and dry season respectively. Hg and Ni were neither detected in the soil nor in the vegetables. The trend of the metals in both the soil and vegetable was in the order: Cr > Fe> Hg> Ni. The Target Hazard Quotients were all less than 1, indicating no health risk. Conclusion: These results suggest that there is no significant difference between the amount of metals in the soil or that accumulated by the vegetables in rainy and dry seasons of the year. Also the amount of metals accumulated by most of the vegetables was directly proportional to the amount present in the soil where they are planted. These results indicate that the concentration of Cr, Fe, Hg and Ni in the soil and vegetables were still low and within the permissible limits of WHO/FAO. Thus, the consumption of the vegetables in the area may not pose any risk at the moment.

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“…Shuman [14] and Kiekens [15] for instance have reported earlier that Zn availability to plants in the soil depends on its chemical form in the soil and the dynamic equilibrium among its different forms or fractions in the soil. Ngole [16] have also stated that the accumulation of Cr and Fe depends on the pH and their availability in acidic soil among other factors. Besides, an earlier research by Free Library [17] in the area have revealed that soil is quite porous and acidic with a pH range of 4-6, making the availability of the metals for accumulation by the vegetables possible.…”

Section: Discussionmentioning

confidence: 99%

Concentration of Heavy Metals (Cd, Co, Cr, & Fe) in Soil and Edible Vegetables in Obudu Urban Area of Cross River State, Nigeria

Akpe

Ubua

2019

CSIJ

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The soil and edible vegetable samples were collected from Obudu Urban Area of Cross River State and were digested and analyzed for the Cd, Co, Cr, and Fe (heavy metals) concentration using Atomic Absorption Spectrometer (AAS) in the University of Calabar Laboratory. The eight vegetables considered for the study were Amaranthus spp., Corchorus olitorius, Murraya koenigii, Ocimum grattissimum, Solanum melongena, Talinum triangulare, Telferia occidentalis and Vernonia amygdalina. The results showed that the mean concentration of the metal in the soil in mgkg-1 ranged from (0.004-0.0048) and (0.005-0.046) in rainy and dry seasons respectively for Cd, (0.004-0.025) and (0.006-0.016) in rainy and dry season respectively for Cr, and (0.112-0.173) and (0.116-0.151) in rainy and dry season respectively for Fe. The concentration of Co was not detected in the soil or vegetables. The mean concentration accumulated by the vegetables and that present in the soil was in the order: Fe> Cd> Cr> Co. These results suggest that there is no significant difference between the amount of metals in the soil or that accumulated by the vegetables in rainy and dry seasons of the year. Also the amount of metals accumulated by most of the vegetables was directly proportional to the amount present in the soil where they are planted. The bioaccumulation ratios were all less than 1. These results indicate that the concentration of Cd, Co, Cr, & Fe in the soil and vegetables were still low and within the permissible limits of WHO/FAO. Thus, the consumption of the vegetables in the area may not cause any harm for now.

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Using soil heavy metal enrichment and mobility factors to determine potential uptake by vegetables

Cited by 29 publications

References 21 publications

The effect of oil palm decanter cake on the accumulation of nutrients and the stomatal opening of Solanum melongena (brinjal) plants

The effect of oil palm decanter cake on the accumulation of nutrients and the stomatal opening of Solanum melongena (brinjal) plants

Health Risk Analysis of Heavy Metals (Cr, Fe, Hg & Ni) in Edible Vegetables in Yala Urban Area of Cross River State, Nigeria

Concentration of Heavy Metals (Cd, Co, Cr, & Fe) in Soil and Edible Vegetables in Obudu Urban Area of Cross River State, Nigeria

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