Neglected exposure route: cobalt on skin and its associations with urinary cobalt levels

Occupational and Environmental Medicine
Jolinde KettelarijAnneli Julander

Abstract

Cobalt (Co) exposure is associated with adverse health effects including skin sensitisation, asthma and interstitial lung fibrosis. Exposure to Co in industrial settings is often assessed using air samples or biomonitoring in urine. Skin exposure is rarely measured. Aim of this study was to quantify and compare the importance of Co skin exposure and respiratory exposure in determining urinary Co concentrations. Co skin exposure was measured in 76 hard metal workers by acid wipe sampling before and at the end of work shifts. Spot urine was collected during a 24-hour period from the start of a shift. Respiratory exposure was measured by personal inhalable dust sampling during a shift in 30 workers. Co was analysed by inductively coupled plasma mass spectrometry. Quantile regression modelling showed that a doubling of Co on skin before or at the end of shift increased the median urinary concentration of Co by 70% (p<0.001) or 32% (p<0.001), respectively. A doubling of Co in air increased median urinary Co by 38% (p<0.001). Co skin exposures were still significantly associated with urinary Co after excluding a group of workers with high respiratory exposure (33%, p=0.021 and 17%, p=0.002). The results indicate an association betwee...Continue Reading

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Citations

Jun 23, 2020·Annals of Work Exposures and Health·Anneli JulanderPål Graff
Aug 10, 2020·Journal of Occupational and Environmental Medicine·Lena AnderssonHåkan Westberg
Dec 6, 2020·Contact Dermatitis·Kotryna LinauskieneLaura Malinauskiene
Oct 4, 2020·Journal of Occupational and Environmental Medicine·Lena AnderssonHåkan Westberg

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