Geoassessment of heavy metals in rural and urban floodplain soils: health implications for consumers of Celosia argentea and Corchorus olitorius vegetables in Sagamu, Nigeria

Vegetable gardening in floodplains in western Nigeria has assumed economic significance but with attendant pressure on urban field in the dry season. This study assessed soil properties and bioconcentration of cadmium (Cd), iron (Fe) and lead (Pb), in edible parts of Celosia argentea and Corchorus o...

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Veröffentlicht in:Environmental monitoring and assessment 2020-03, Vol.192 (3), p.164, Article 164
Hauptverfasser: Oguntade, Oladele A., Adegbuyi, Adetutu A., Nassir, Adesola L., Olagunju, Solomon O., Salami, Waheed A., Adewale, Rilwan O.
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container_issue 3
container_start_page 164
container_title Environmental monitoring and assessment
container_volume 192
creator Oguntade, Oladele A.
Adegbuyi, Adetutu A.
Nassir, Adesola L.
Olagunju, Solomon O.
Salami, Waheed A.
Adewale, Rilwan O.
description Vegetable gardening in floodplains in western Nigeria has assumed economic significance but with attendant pressure on urban field in the dry season. This study assessed soil properties and bioconcentration of cadmium (Cd), iron (Fe) and lead (Pb), in edible parts of Celosia argentea and Corchorus olitorius grown in floodplains . Soil and vegetable samples were collected at 20 m intervals from rural (Atoyo and Ewuga) and urban (GRA Rd. and Lafarge) floodplain gardens in Sagamu. Six samples were collected per location making a total of 24 samples each of soil and vegetable. Samples were analyzed for soil properties and heavy metal concentration in the vegetables. Transfer factor (TF), contamination factor (CF), daily intake of metals (DIM), health risk index (HRI) and geoaccumulation index ( I geo ) were also determined. Soil properties varied significantly, with the highest soil concentration of Cd (0.91 mg kg −1 ) and Fe (208.20 mg kg −1 ) recorded at Lafarge. The highest soil Pb (223.77 mg kg −1 ) was at Atoyo. Bioaccumulation of Fe was significantly ( p  ≤ 0.05) higher in C. argentea than C. olitorius . Heavy metal bioaccumulation beyond allowable limits was recorded for Cd (0.46 mg kg −1 ) and Pb (49.30 mg kg −1 ) by C. argentea and C. olitorius , respectively. Soil contamination was dominated by Cd at Lafarge and by Pb at Atoyo. The DIM and HRI indices indicated no risk of Cd, Fe and Pb consumption in the vegetables. Geoaccumulation index revealed that Lafarge and Atoyo soils were extremely contaminated with Cd and Pb, respectively. Leafy vegetables grown in urban and rural floodplain soils adjacent to waste dumpsite are accumulators of Cd and Pb with food poisoning as the consequence.
doi_str_mv 10.1007/s10661-020-8077-9
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This study assessed soil properties and bioconcentration of cadmium (Cd), iron (Fe) and lead (Pb), in edible parts of Celosia argentea and Corchorus olitorius grown in floodplains . Soil and vegetable samples were collected at 20 m intervals from rural (Atoyo and Ewuga) and urban (GRA Rd. and Lafarge) floodplain gardens in Sagamu. Six samples were collected per location making a total of 24 samples each of soil and vegetable. Samples were analyzed for soil properties and heavy metal concentration in the vegetables. Transfer factor (TF), contamination factor (CF), daily intake of metals (DIM), health risk index (HRI) and geoaccumulation index ( I geo ) were also determined. Soil properties varied significantly, with the highest soil concentration of Cd (0.91 mg kg −1 ) and Fe (208.20 mg kg −1 ) recorded at Lafarge. The highest soil Pb (223.77 mg kg −1 ) was at Atoyo. Bioaccumulation of Fe was significantly ( p  ≤ 0.05) higher in C. argentea than C. olitorius . Heavy metal bioaccumulation beyond allowable limits was recorded for Cd (0.46 mg kg −1 ) and Pb (49.30 mg kg −1 ) by C. argentea and C. olitorius , respectively. Soil contamination was dominated by Cd at Lafarge and by Pb at Atoyo. The DIM and HRI indices indicated no risk of Cd, Fe and Pb consumption in the vegetables. Geoaccumulation index revealed that Lafarge and Atoyo soils were extremely contaminated with Cd and Pb, respectively. 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This study assessed soil properties and bioconcentration of cadmium (Cd), iron (Fe) and lead (Pb), in edible parts of Celosia argentea and Corchorus olitorius grown in floodplains . Soil and vegetable samples were collected at 20 m intervals from rural (Atoyo and Ewuga) and urban (GRA Rd. and Lafarge) floodplain gardens in Sagamu. Six samples were collected per location making a total of 24 samples each of soil and vegetable. Samples were analyzed for soil properties and heavy metal concentration in the vegetables. Transfer factor (TF), contamination factor (CF), daily intake of metals (DIM), health risk index (HRI) and geoaccumulation index ( I geo ) were also determined. Soil properties varied significantly, with the highest soil concentration of Cd (0.91 mg kg −1 ) and Fe (208.20 mg kg −1 ) recorded at Lafarge. The highest soil Pb (223.77 mg kg −1 ) was at Atoyo. Bioaccumulation of Fe was significantly ( p  ≤ 0.05) higher in C. argentea than C. olitorius . Heavy metal bioaccumulation beyond allowable limits was recorded for Cd (0.46 mg kg −1 ) and Pb (49.30 mg kg −1 ) by C. argentea and C. olitorius , respectively. Soil contamination was dominated by Cd at Lafarge and by Pb at Atoyo. The DIM and HRI indices indicated no risk of Cd, Fe and Pb consumption in the vegetables. Geoaccumulation index revealed that Lafarge and Atoyo soils were extremely contaminated with Cd and Pb, respectively. Leafy vegetables grown in urban and rural floodplain soils adjacent to waste dumpsite are accumulators of Cd and Pb with food poisoning as the consequence.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><pmid>32025899</pmid><doi>10.1007/s10661-020-8077-9</doi><orcidid>https://orcid.org/0000-0002-0825-5089</orcidid></addata></record>
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subjects Accumulators
Atmospheric Protection/Air Quality Control/Air Pollution
Bioaccumulation
Biological magnification
Botulism
Cadmium
Cadmium content
Celosia
Celosia argentea
Corchorus
Corchorus olitorius
Dry season
Earth and Environmental Science
Ecology
Economics
Ecotoxicology
Environment
Environmental Management
Environmental Monitoring
Environmental science
Floodplains
Food contamination
Food poisoning
Gardening
Gardens & gardening
Health risks
Heavy metals
Humans
Iron
Lead
Metal concentrations
Metals, Heavy - analysis
Monitoring/Environmental Analysis
Nigeria
Risk Assessment
Soil
Soil analysis
Soil contamination
Soil Pollutants - analysis
Soil pollution
Soil properties
Soils
Transfer factor
Vegetables
Vegetables - chemistry
title Geoassessment of heavy metals in rural and urban floodplain soils: health implications for consumers of Celosia argentea and Corchorus olitorius vegetables in Sagamu, Nigeria
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