Published: Jun 1975
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This report presents the results obtained from an experimental study of the accuracy and precision of measurements of particulate and vaporous lead using a colorimetric dithizone procedure as described in ASTM Method D-3112. Measurements of lead concentration in spiked and unspiked atmospheric air samples were performed by eight participating laboratories at three test sites: Los Angeles, California; Bloomington, Indiana; and New York, New York. The first series of field tests were conducted at the University of Southern California on August 15–21, 1971; the second series of field tests were conducted at Indiana University on October 24–30, 1971; and the third series of field tests were conducted at Cooper Union (New York City), on January 9–15, 1972. All measurements were made according to a tentative ASTM method for lead in the atmosphere from which ASTM Method D 3112 evolved.
Foster, J. F.
Beatty, G. H.
Howes, J. E.