Document Detail


A new technique to determine organic and inorganic acid contamination.
MedLine Citation:
PMID:  11827389     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A new acid indicator pad was developed for the detection of acid breakthrough of gloves and chemical protective clothing. The pad carries a reagent which responds to acid contaminant by producing a color change. The pad was used to detect both organic and inorganic acids permeating through glove materials using the modified ASTM F-739 and direct permeability testing procedures. Breakthrough times for each type of glove were determined, and found to range from 4 min to > 4 h for propionic acid, from 3 min to > 4 h for acrylic acid, and from 26 min to > 4 h for HCl. A quantification was performed for propionic and acrylic acids following solvent desorption and gas chromatography. Both acids exhibited > 99% adsorption [the acid and its reactivity (the acid reacted with an indicator to contribute the color change)] on the pads at a spiking level of 1.8 microL for each acid. Acid recovery during quantification was calculated for each acid, ranging from 52-72% (RSD < or = 4.0%) for both acids over the spiking range 0.2-1.8 microL. The quantitative mass of the acids on the pads at the time of breakthrough detection ranged from 260-282 and 270-296 microg cm(-2) for propionic acid and acrylic acid, respectively. The new colorimetric indicator pad should be useful in detecting and collecting acid permeation samples through gloves and chemical protective clothing in both laboratory and field studies, for quantitative analysis.
Authors:
Evanly Vo
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Analyst     Volume:  127     ISSN:  0003-2654     ISO Abbreviation:  Analyst     Publication Date:  2002 Jan 
Date Detail:
Created Date:  2002-02-05     Completed Date:  2002-03-11     Revised Date:  2005-11-17    
Medline Journal Info:
Nlm Unique ID:  0372652     Medline TA:  Analyst     Country:  England    
Other Details:
Languages:  eng     Pagination:  178-82     Citation Subset:  IM    
Affiliation:
National Institute for Occupational Safety and Health, Division of Safety Research, Morgantown, WV 26505, USA.
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MeSH Terms
Descriptor/Qualifier:
Acids*
Equipment Failure
Gloves, Protective*
Indicators and Reagents
Occupational Health*
Toxins, Biological*
Chemical
Reg. No./Substance:
0/Acids; 0/Indicators and Reagents; 0/Toxins, Biological

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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