Heavy metal levels in spent engine oils and fingernails of auto-mechanics

IF 1 Q4 CHEMISTRY, MULTIDISCIPLINARY Ovidius University Annals of Chemistry Pub Date : 2021-01-01 DOI:10.2478/auoc-2021-0004
C. Ikese, P. A. Adie, Christie A Adah, Raphael Amokaha, Grace Abu, Timothy K. Yager
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Abstract

Abstract The levels of some heavy metals in spent engine oils and in the fingernails of auto-mechanics were studied. Engine oils and fingernails were collected from auto-mechanics who had practiced between ≤ 5 years, ≤ 10 years and ≤ 15 years in 3 auto-mechanic workshop clusters. Pb, Ni, V, Cd, and As levels were determined using Atomic Absorption Spectrophotometer. The mean levels of Pb, Ni, V and Cd in spent engine oils were 14.31, 2.25, 0.38 and 2.07 ppm respectively, and these far exceeded their permissible exposure limits. The mean levels of heavy metals in the fingernails of auto-mechanics who had practiced for ≤ 5 years, ≤ 10 years and ≤ 15 years were all considerably below their pathological thresholds. Thus, auto-mechanics in the study area are exposed to unsafe levels of Pb, Ni, V, and Cd, but no immediate threat of their toxicities in the study population exist. However, a progressive bioaccumulation of the heavy metals was observed with increase in years of practice.
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废机油和汽车修理工指甲中的重金属含量
摘要对废机油和汽车修理工指甲中重金属的含量进行了研究。收集3个汽修车间集群从业年限≤5年、≤10年和≤15年的汽修工的机油和指甲。用原子吸收分光光度计测定Pb、Ni、V、Cd、As的含量。废发动机油中Pb、Ni、V和Cd的平均含量分别为14.31、2.25、0.38和2.07 ppm,远远超过了允许的暴露限值。从业≤5年、≤10年和≤15年的汽车修理工指甲中重金属的平均含量均明显低于其病理阈值。因此,研究地区的汽车修理工暴露在不安全水平的Pb、Ni、V和Cd中,但在研究人群中不存在其毒性的直接威胁。然而,随着多年的实践,观察到重金属的渐进式生物积累。
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来源期刊
Ovidius University Annals of Chemistry
Ovidius University Annals of Chemistry CHEMISTRY, MULTIDISCIPLINARY-
自引率
11.10%
发文量
20
审稿时长
5 weeks
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