Blood Pb concentration showed a trend to decrease with increasing distance from the smelter, but urinary Cd did not show a clear trend.
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Chronic Exposure to Lead and Cadmium in Residents Living Near a Zinc Smelter.
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In a previous study, the geometric means of blood Pb in Koreans individuals were 1.25, 1.46, 1.59, 1.89, and 1.74 μg/dL for the following age groups: 19–29, 30–39, 40–49, 50–69, and ≥70 years old, respectively, showing an increasing trend with older age [ 19 ].
Urinary Cd concentration showed a trend to increase with older age.