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Air Quality Criteria for Lead Volume II of II - (NEPIS)(EPA) - US ...

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AX6-175<br />

Table AX6-6.2 (cont’d). <strong>Lead</strong> Exposure and Male Reproduction: Semen <strong>Quality</strong><br />

Reference and<br />

Study Location Study Description Pb Measurement Findings, Interpretation<br />

Canada<br />

Alexander et al.<br />

(1996a)<br />

British Columbia<br />

119 workers employed at a Pb smelter. Current blood Pb:<br />

Mean 22.4 µg/dL (range 5-58)<br />

Sperm concentration and total sperm count were<br />

inversely related to current blood Pb<br />

concentration, with the largest effects detected<br />

among men with blood Pb concentrations <strong>of</strong> 40<br />

µg/dL or more.<br />

Geometric mean<br />

Blood Pb (µg/dL) sperm count×10 6<br />

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