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Ecological and human health risk evaluation of potential toxic metals in paddy soil, rice plants, and rice grains (Oryza sativa) of Omor Rice Field, Nigeria
Environmental Monitoring and Assessment ( IF 3 ) Pub Date : 2021-09-03 , DOI: 10.1007/s10661-021-09386-3
Janefrances Ngozi Ihedioha 1 , Hillary Onyeka Abugu 1 , Oguejiofo Theophilus Ujam 1 , Nwachukwu Romanus Ekere 1
Affiliation  

Potential toxic metals from natural and anthropogenic sources accumulate in soil and plants, and represent important environmental contamination challenges. The ecological and human health risks of the potential toxic metals in rice grain, paddy soil, and rice plants of Omor rice field were assessed. The total metal concentration from the four sampling sections (mg/kg) were soil—Zn (29.51 ± 2.23), Mn (55.27 ± 8.10), Cd (5.49 ± 2.24), Cu (2.94 ± 1.47), Pb (14.35 ± 6.54), and Cr (27.06 ± 8.31); rice grain—Zn (21.70 ± 5.44), Mn (3.30 ± 0.21), Cd (00.14 ± 0.11), Cu (2.80 ± 0.34), Pb (11.98 ± 0.58), and Cr (15.86 ± 2.79); and for rice plant—Zn (5.24 ± 1.93), Mn (4.68 ± 1.91), Cd (0.21 ± 0.11), Cu (4.88 ± 0.61), Pb (15.24 ± 6.16), and Cr (46.5 ± 6.05). The estimated daily intakes for adult showed that Cd and Pb exceeded the safe limit by 1% and 93%, respectively. The metal hazard quotients (Zn-0.0007, Mn-0.00019, Cd-0.16, Cu-0.19, and Cr-0.0000077) were less than 1 indicating no probable health risk originating from their exposure. The total hazard index (0.35) also suggests no probable health risk connected with the rice consumption. The metals’ ecological risk indices of the soil showed low-risk (< 40), except Cd in some sections of the rice field which indicated moderate potential ecological risk (40—80).



中文翻译:

尼日利亚奥莫尔稻田水稻土、水稻和稻谷中潜在有毒金属的生态和人类健康风险评估

来自自然和人为来源的潜在有毒金属在土壤和植物中积累,并代表重要的环境污染挑战。评估了 Omor 稻田稻谷、稻田和稻株中潜在有毒金属的生态和人类健康风险。四个采样断面的金属总浓度(mg/kg)为土壤——Zn(29.51±2.23)、Mn(55.27±8.10)、Cd(5.49±2.24)、Cu(2.94±1.47)、Pb(14.35±6.54) ), 和 Cr (27.06 ± 8.31); 米粒——Zn(21.70±5.44)、Mn(3.30±0.21)、Cd(00.14±0.11)、Cu(2.80±0.34)、Pb(11.98±0.58)和Cr(15.86±2.79);对于水稻——Zn (5.24 ± 1.93)、Mn (4.68 ± 1.91)、Cd (0.21 ± 0.11)、Cu (4.88 ± 0.61)、Pb (15.24 ± 6.16) 和 Cr (46.5 ± 6.05)。成人每日估计摄入量显示,Cd 和 Pb 超过安全限值 1% 和 93%,分别。金属危害商数(Zn-0.0007、Mn-0.00019、Cd-0.16、Cu-0.19 和 Cr-0.0000077)小于 1,表明它们不存在可能的健康风险。总危害指数 (0.35) 也表明与大米消费无关的可能的健康风险。土壤的金属生态风险指数为低风险(< 40),除稻田部分区域的Cd表明潜在生态风险为中等(40-80)。

更新日期:2021-09-04
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