Human biomonitoring of metals in workers at the waste-to-energy incinerator of Turin: An Italian longitudinal study.

This study is one of the few focusing on workers with a longitudinal design (the first in Italy). Eighteen metals in urine and lead in blood were determined by sector field inductively coupled plasma mass spectrometry. Information on participant habits and other characteristics that could potentially affect metals concentrations were collected via a structured questionnaire. Subjects were classified according to their work role at the facility: administrative staff workers (AW); plant workers (PW). Nonparametric methods were used to evaluate the changes in metals concentration over time. Comparison of the metals concentration in the samples taken at baseline and at the following two-time points shows a general decrease in levels: urinary concentration of beryllium (Be), cobalt (Co), mercury (Hg), Ir, nickel (Ni), tin (Sn), thallium (Tl), and blood level of lead (Pb) among the PW and Ir and Pd among the AW were significantly lower at T2 versus baseline. A decrease was also recorded in arsenic (As) among the PW and in cadmium (Cd), chromium (Cr), palladium (Pd), rhodium (Rh), and zinc (Zn) for both groups, whereas the levels of copper (Cu) and vanadium (V) remained unchanged over time. The downward trend remained also after taking confounding factors into account. The only exceptions were Mn, Pt, Sb among the PW: increase levels between T0 and T2 were recorded, which cannot be specifically attributable to the plant activity. The median urinary and blood concentrations of the me...
Source: International Journal of Hygiene and Environmental health - Category: Environmental Health Authors: Tags: Int J Hyg Environ Health Source Type: research