Accession Number:

ADA036666

Title:

A Statistical Study of Grab Sampling in a Closed Environment.

Descriptive Note:

Technical rept.,

Corporate Author:

DESMATICS INC STATE COLLEGE PA

Personal Author(s):

Report Date:

1977-02-01

Pagination or Media Count:

52.0

Abstract:

Maintaining the quality of an enclosed environment e.g., aboard a submarine requires monitoring of the environment by means of sampling procedures. One general type of sampling procedure is grab sampling, in which atmospheric samples are obtained, essentially instantaneously, in evacuated flasks. This report describes an experiment to determine 1 whether differences exist in the performance of four grab sampling methods, and 2 whether a delay in analyzing the samples affects the results i.e., whether the samples have a shelf life. Eleven contaminants, each at a high and a low concentration level, were used in the study. Grab samples of these contaminants were analyzed at ten day intervals from the time sampling occurred until seventy days had elapsed. Although the experiment did not reveal differences in grab sampling methods, it did indicate that, for most of the contaminants, the samples do have a shelf life. Author

Subject Categories:

  • Statistics and Probability
  • Submarine Engineering
  • Life Support Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE