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DERIVATION OF CONTINUOUS AIR MONITOR EQUATIONS FOR DAC AND DAC-H

Justus, Alan L.*

doi: 10.1097/HP.0b013e3181cf71f1
Note

Equations are derived that provide the numerical algorithms necessary for the calculations of both concentration (such as #DAC) and exposure (such as #DAC-h) within continuous air monitors (CAMs) employing collection media. Both calculations utilize measured counts over certain CAM counting intervals. The relationship to similar, although oft misinterpreted, equations given in International Organization for Standardization Standard 11929-5:2005 is detailed.

* Los Alamos National Laboratory, Los Alamos, NM 87545.

For correspondence contact A. Justus at the above address, or email at ajustus@lanl.gov.

(Manuscript accepted 14 December 2009).

©2010Health Physics Society