Lead, Zinc and Cadmium Accumulation, and Associated Health Risks, in Maize Grown near the Kabwe Mine in Zambia in Response to Organic and Inorganic Soil Amendments

Mwilola, Patricia N.; Mukumbuta, Ikabongo; Shitumbanuma, Victor; Chishala, Benson H.; Uchida, Yoshitaka; Nakata, Hokuto; Nakayama, Shouta; Ishizuka, Mayumi

Lead, Zinc and Cadmium Accumulation, and Associated Health Risks, in Maize Grown near the Kabwe Mine in Zambia in Response to Organic and Inorganic Soil Amendments

Mwilola, Patricia N.; Mukumbuta, Ikabongo; Shitumbanuma, Victor et al.

International journal of environmental research and public health, 2020, 17(23), 9038

Permalink : https://hdl.handle.net/2115/80470

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アクセス権	open access
URI	https://hdl.handle.net/2115/80470
タイトル	Lead, Zinc and Cadmium Accumulation, and Associated Health Risks, in Maize Grown near the Kabwe Mine in Zambia in Response to Organic and Inorganic Soil Amendments
著者	Mwilola, Patricia N. ; Mukumbuta, Ikabongo ; Shitumbanuma, Victor ; Chishala, Benson H. ; Uchida, Yoshitaka ; Nakata, Hokuto ; Nakayama, Shouta ; Ishizuka, Mayumi
著者名 Mwilola, Patricia N.
著者名 Mukumbuta, Ikabongo
著者名 Shitumbanuma, Victor
著者名 Chishala, Benson H.
著者名 Uchida, Yoshitaka
著者名 Nakata, Hokuto
著者名 Nakayama, Shouta
e-Rad_Researcher 50332474 著者名 Ishizuka, Mayumi
言語	英語
キーワード	legacy mining
	heavy metals
	soil amendments
	maize
	health risks
発行日	2020-12
出版者	MDPI
収録物名	International journal of environmental research and public health
巻(号)	17(23)
ページ	9038
抄録	Health risks due to heavy metal (HM) contamination is of global concern. Despite concerns of high levels of HMs in soils near Kabwe mine in Zambia, edible crop production is common, posing potential health risks. This study assessed the potential of chicken manure (CM), triple superphosphate (TSP) and a blended fertilizer (BF; consisting of Nitrogen, Phosphorous and Potassium (NPK) fertilizer and composted chicken manure) to reduce lead (Pb), zinc (Zn) and cadmium (Cd) in soils and their accumulation in maize grown near the Kabwe mine. Maize was grown to maturity and its HM concentrations and associated health risk indices were calculated. All soil amendments decreased bioavailable soil Pb concentrations by 29-36%, but only CM decreased Zn, while the amendments increased or had no effect on Cd concentrations compared to the control. The amendments reduced Pb (>25%) and Zn concentrations (>18%) in the maize stover and grain. However, Cd concentrations in maize grain increased in the BF and TSP treatments. Bioaccumulation factors showed that Cd had the highest mobility from the soil into maize stover and grain, indicating the need for greater attention on Cd in Kabwe despite its apparently lower soil concentration compared to Pb and Zn. The hazard quotients for Pb and Cd were much greater than one, indicating a high risk of possible exposure to toxic levels by people consuming maize grain grown in this area. This study demonstrated the significant potential of manure and phosphate-based amendments to reduce Pb and Zn, and to some extent Cd, uptake in maize grain and consequently reduce associated health risks.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution 4.0 International
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.3390/ijerph17239038