Biomedical subjects

J V Crable

Publications and source records attributed to J V Crable.

4 recordsLinked to original sources

PubMed1978

Chemical and statistical studies of contaminants in urban lungs.

Lungs taken at autopsy from 100 urban residents were studied to determine concentrations of 21 trace metals, dust, free silica and hydroxyproline. Medical, occupational and environmental histories were collected so that correlation studies might be done. The potential value of this data as a baseline for further studies of occupationally diseased lung tissue was assessed by evaluating the results of an analysis of variance. The personal histories were used as the criteria for classifying the observations (lung concentrations) into groups for the statistical analysis.

Adult↗

PubMed1977

Collaborative testing of a gas chromatographic charcoal tube method for seven organic solvents.

The National Institute for Occupational Safety and Health has undertaken a program to provide reliable sampling and analytical methods for a number of industrial hygiene uses. Recommendation of methods to the Department of Labor for compliance testing and inclusion of methods in critera for Recommended Standards for Occupational Exposures are two prime areas of utilization. This paper presents the results of our initial efforts in collaborative testing. The method is a charcal tube sampling procedure and a gas chromatographic analytical technique. Samples of seven single component solvents which included benzene, carbon tetrachloride, chloroform, dioxane, ethylene dichloride, trichloroethylene, and xylene along with two solvent mixtures which consisted of a benzene-xylene combination and an ethylene dichloride-trichloroethylene conbination were tested in two phases by 15 participating laboratories. The data analysis indicates the overalll error associated with the method and identifies sources of error within each segment of the method.

Benzene↗

PubMed1975

Analytical methods used in a study of coke oven effluent.

In a coke oven study conducted by NIOSH, selected chemical analyses of airborne particulates, vapors, and metals in the emissions from five coke ovens were done. Eight sampling procedures and seven analytical techniques were used to analyze samples collected for the study. Six of the analytical methods used are discussed.

Air Pollution↗

PubMed1975

Classification of analytical methods.

The ideal analytical method is one which has been thoroughly evaluated, collaboratively tested by a number of laboratories, and established by long usage. The development of such procedures is time consuming and expensive. However, a classification scheme which recognizes that methods may be used which have not been fully evaluated or collaboratively tested is useful. A scheme with five classes which has been applied to NIOSH analytical methods is presented. It recognizes that many analytical methods have been developed, that other agencies and organizations have examined the literature and published methods, and that unproved or suggested method may be the only information available.

Chemistry Techniques, Analytical↗