尼泊尔加德满都当地鱼市中某些鱼类重金属的生物积累和健康风险评估

Garima Lo Tamang, B. Adhikari, M. Shrestha, Achut Ram Pradhananga, Bindra Devi Shakya, D. R. Pant, R. Shakya, Jasana Maharjan, Sudarshana Shakya, P. Shakya
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引用次数: 0

摘要

本研究采用火焰原子吸收分光光度计(FAAS)测定了在尼泊尔加德满都上市的5种鱼类,即Hypophthalmichthys nobilis (high head)、Wallago attu (Buhari)、Catla Catla (Catla)、Clarias batrachus (Mugree)和Labeo rohita (Rohu),共25种鱼类的可食用肌肉组织中Cd、Cr、Mn、Pb和Zn的浓度,并采用USEPA确定性方法评估了成人的潜在健康风险。各鱼类的平均金属累积量依次为Zn (27.89) > Mn (5.36) > Pb (2.37) > Cr (1.12) > Cd (0.44) mg/kg,除Zn外均超过FAO/WHO标准。平均金属浓度之和(∑5HM)由高到低依次为:猫茅(49.61)>鼠茅(44.49)>野茅(34.51)>野茅(32.10)>野茅(25.18)mg/kg。相关矩阵显示了一些HMs之间的显著相关性,表明它们在被检查的鱼类中具有共同的来源。HMs的估计日摄入量(EDIs)低于最大可耐受日摄入量(MTDI)。所有鱼类中单个元素的目标危害系数(thq)均小于1.0,而batrachus、cattla和H. nobilis的总目标危害系数(tthq)均超过了1.0的安全限值,具有潜在的非致癌风险。此外,Cd和Cr的靶癌风险(TRs)在所有鱼类中都高于可接受的风险极限(10 - 4),这表明它们的食用可能会对成年人造成终生的癌症风险。因此,研究建议定期监测商业鱼类中的HMs,以确保消费者的健康安全。j:。科学。Biotechnol。Vol 11(2): 85-98。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Bioaccumulation and Health Risk Assessment of Heavy Metals in Some Fish Species Available in Local Fish Markets of Kathmandu, Nepal
In this study, concentrations of Cd, Cr, Mn, Pb, and Zn were determined by flame atomic absorption spectrophotometer (FAAS) in edible muscle tissues of a total of 25 fish samples belonging to five fish species viz., Hypophthalmichthys nobilis (Bighead), Wallago attu (Buhari), Catla catla (Catla), Clarias batrachus (Mugree), and Labeo rohita (Rohu) marketed in Kathmandu, Nepal and evaluated potential health risks for adults using USEPA deterministic approaches. The average metal accumulation in all fish species followed the order of Zn (27.89) > Mn (5.36) > Pb (2.37) > Cr (1.12) > Cd (0.44) mg/kg, exceeding the FAO/WHO guidelines except for Zn. Likewise, the sum of average metal concentrations (∑5HM) followed the descending order of C. catla (49.61) > C. batrachus (44.49) > W. attu (34.51)> H. nobilis (32.10) > L. rohita (25.18) mg/kg. The correlation matrix showed significant correlations among some HMs indicating their common sources of origin in the examined fish species. The estimated daily intakes (EDIs) of HMs were lower than the maximum tolerable daily intake (MTDI). The target hazard quotients (THQs) of a single element in all fish species were less than 1.0 while the total target hazard quotients (TTHQs) in C. batrachus, C. catla, and H. nobilis exceeded the safe limit of 1.0 suggesting a potential non-carcinogenic risk. Moreover, the target cancer risks (TRs) of Cd and Cr were higher than the acceptable risk limit (10−4) in all fish species suggesting that their consumption might pose a lifetime cancer risk for adults. Therefore, the study recommends regular monitoring of HMs in commercial fish to ensure the safety of consumer health. Int. J. Appl. Sci. Biotechnol. Vol 11(2): 85-98.
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