A Test of an Alternate Calibration Matrix for NIOSH Method 7300

Date of Award

Spring 5-1996

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Community & Environmental Health

Program/Concentration

Community Health Professions

Committee Director

A. James English

Committee Member

Rodney G. Handy

Committee Member

Kent D. Shoemaker

Call Number for Print

Special Collections LD4331.C48 V57

Abstract

The purpose of this study was to determine if the analytical results (when determining cadmium, lead, and zinc concentrations) for air sample filters prepared and analyzed according to N:OSH Method 7300, differ significantly, from those obtained when the instrument is calibrated using EPA Method 200.7 acid matrix standards. The null hypothesis was that no statistically significant difference, measured at the 95% confidence level, would exist between results obtained from the two calibration standards. Careful standard and sample preparation, the use of an internal standard, and the application of working standard and working internal standard correction factors served to isolate the acid matrix of the two calibration standards as the independent variables.

Statistical comparison of experimental means, employing at value at the 95% confidence level, indicated that the null hypothesis was supported in twenty out of twenty cases.

Based on the results of this research, it appears that the alternate matrix calibration standards may be used when determining cadmium, lead, and/or zinc concentrations, for samples prepared in the NIOSH method matrix, without significant differences in analytical results.

Rights

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DOI

10.25777/ytcq-gt65

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