Adebiyi F M, Ore O T, Ogunjimi I O
Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria.
Heliyon. 2019 Dec 27;6(1):e03092. doi: 10.1016/j.heliyon.2019.e03092. eCollection 2020 Jan.
Concentrations of potentially toxic metals were determined in crayfish () commonly consumed in Nigeria using Atomic Absorption Spectrophotometry. Results revealed that Fe had the highest mean value of 18.88 ± 0.10 μg/g, while Pb had the least (0.91 ± 0.01 μg/g). Cluster analysis showed close inter-element relationships between the metals, indicating similar chemical properties and/or genetic origin. Correlation matrix indicated positive and significant correlations between Cr/Cd, Fe/Cd, Fe/Cr, Pb/Cd, Pb/Fe and Cu/Zn, establishing chemical affinity. Estimated daily intake, target hazard quotient and cancer risk showed that there was no health risk associated with the consumption of the crayfish. Relative risk showed that potential health risk could be attributed only to Cd level. The study concluded that consumption of the crayfish may not pose health risk to human health at the levels of the analysed metals, but should be consumed moderately to prevent bioaccumulation of the metals most importantly Cd.
采用原子吸收分光光度法测定了尼日利亚常见食用小龙虾（ ）中潜在有毒金属的含量。结果显示，铁的平均含量最高，为18.88±0.10μg/g，而铅的含量最低（0.91±0.01μg/g）。聚类分析表明这些金属之间存在密切的元素间关系，表明它们具有相似的化学性质和/或遗传来源。相关矩阵表明铬/镉、铁/镉、铁/铬、铅/镉、铅/铁和铜/锌之间存在正相关且显著的相关性，建立了化学亲和力。估计每日摄入量、目标危害商数和癌症风险表明，食用小龙虾不存在健康风险。相对风险表明潜在健康风险仅可归因于镉的含量。该研究得出结论，在所分析的金属含量水平下，食用小龙虾可能不会对人类健康构成健康风险，但应适量食用以防止金属尤其是镉的生物累积。
