Accumulation of Heavy Metals in Maga-Pouss Rice Fields (Far-North Region, Cameroon) and Transfer to Rice Grains
Accumulation of Heavy Metals in Maga-Pouss Rice Fields (Far-North Region, Cameroon) and Transfer to Rice Grains作者机构：Department of Hydraulics and Water Management National Advanced School of Engineering University of Maroua Maroua Cameroon Research Center of Global Studies with Multidisciplinary Units (CREGUM) Maroua Cameroon National Laboratory of Analysis of Agricultural Inputs and Products Ministry of Agriculture and Rural Development Messa-Yaoundé Cameroon Department of Animal Physiology and Biology Faculty of Sciences University of Yaoundé I Yaoundé Cameroon
出 版 物：《Agricultural Sciences》 (农业科学（英文）)
年 卷 期：2024年第15卷第3期
页 面：311-326页
主 题：Heavy Metals Rice Field Bioconcenration Factor Maga-Pouss Accumulation
摘 要：Monitoring of heavy metals contamination of agricultural products and their transfer and bioaccumulation in crops like rice has become a hot topic worldwide over the last two decades. The present study was carried out to determine the accumulation of heavy metals in rice fields and their transfer to rice grains. Soil, irrigation water and rice grains samples were gathered in Maga-Pouss, Far-North, Cameroon. Concentrations of six heavy metals (lead, cadmium, zinc, copper, iron and mercury) were evaluated by Atomic Absorption Spectrophotometer (AAS). Mercury was not detected in this study. Average concentrations of metals were in this order (in mg/kg): Fe (188.60 ± 97.06) Pb (63.63 ± 7.11) Cd (2.59 ± 0.29) Zn (1.10 ± 1.05) Cu (0.80 ± 0.73) in water and Pb (105.50 ± 31.11) Fe (105.50 ± 31.11) Cu (45.93 ± 14.39) Zn (22.52 ± 6.40) Cd (3.15 ± 0.49) in soil. Water in Maga-Pouss rice fields appears to be more harmful than the soil, notably for lead, cadmium and copper. In rice grains, heavy metals were found in this order (mg/kg): Fe (188.01 ± 82.62) Cu (27.20 ± 0.00) Zn (23.61 ± 12.42) Pb (19.50 ± 19.91) Cd (2.02 ± 1.05). The mean bioconcentration factor (BCF) of metals from soil to rice grains was in the following order: Fe (2.60) Zn (1.05) Cd (0.64) Cu (0.59) Pb (0.18). From water to rice grains, the order is: Cu (37.26) Zn (22.49) Cd (6.97) Pb (2.74) Fe (1.94). Rice field pH and electrical conductivity favored the uptake of lead, copper and cadmium by rice grains. The findings of this study will be good documentation for risk assessment, and decision-making by environmental managers in this region.
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