A Field-Portable Colorimetric Method for the Measurement of Peracetic Acid Vapors: A Comparison of Glass and Plastic Impingers
Updated July 13, 2022
July 2022
NIOSH Dataset Number RD-1041-2022-0
Introduction
A method for measuring PAA vapors in air using impinger sampling and field-portable colorimetric analysis is presented. The capture efficiency of aqueous media in glass and plastic impingers was evaluated when used for PAA vapor sampling. Measurement of PAA was done using a N,N-diethyl-p-phenylenediamine (DPD) colorimetric method with a field portable spectrometer. The linearity of the DPD method was determined for PAA both in-solution and captured from vapor phase using glass or plastic impingers. The Limit of Detection (LOD) for the glass and plastic impinger (0.24 mg/m3 (0.077 mg/L) and 0.28 mg/m3 (0.091 mg/L)), respectively, and Limit of Quantitation (LOQ) (0.79 mg/m3 (0.25 mg/L) and 0.92 mg/m3 (0.30 mg/L) for the glass and plastic impingers, respectively, are below the threshold limit value (TLV) short term exposure limit (STEL) of 1.24 mg/m3 (0.4 ppm) over a 15 minute period. This impinger method allows for a low cost, easy to use, and rapid in-field measurement for occupational exposure to PAA.
Table 1. Tube Length [XLS – 327 B]
Table 2. Recovery of Various Impingers [XLS – 580 B]
Table 3. Glass Impinger Recovery [XLS – 437 B]
Table 4. 3D Impinger Recovery [XLS – 445 B]
Table S1. HP and PAA Weight Percent [XLS – 282 B]
Table S2. Glass Impinger Collection Efficiency of PAA [XLS – 686 B]
Table S4. Plastic Impinger Collection Efficiency of PAA [XLS – 686 B]
Data Collection Methods
Colorimetric determination of PAA concentration from stock solutions
- PAA was placed into a 25-L volumetric flask and diluted to the mark with deionized water.
- An aliquot of liquid was diluted to 500-mL and measured by Chemetrics or HACH using a V2000 Chemetrics photometer and K-7913 vials or a DR1900 HACH spectrometer with DPD total chlorine reagent powder pills.
Colorimetric determination of PAA vapor concentrations as collected by a glass or plastic impinger
- An impinger was filled with 15-mL of DI water and an Acrodisc® syringe filter was connected to the impinger
- PAA was added to the filter and air was pulled through impinger at 1 L min-1 for 15 minutes
- The impinger liquid was diluted to 500-mL and measured by Chemetrics or HACH using a V2000 Chemetrics photometer and K-7913 vials or a DR1900 HACH spectrometer with DPD total chlorine reagent powder pills.
- To determine impinger collection efficiency, two impingers were connected by tygon tubing. The impingers were filled with 15-mL of DI water and an Acrodisc® syringe filter was connected to the front impinger. PAA was added to the filter and air was pulled through the impingers at 1 L min-1 for 15 minutes. The impingers’ liquid was diluted to 500-mL and measured by Chemetrics V2000 Chemetrics photometer and K-7913 vials.
Citations
Angela L. Stastny, Amos Doepke & Robert P. Streicher (2022): A field portable colorimetric method for the measurement of peracetic acid vapors: a comparison of glass and plastic impingers, Journal of Occupational and Environmental Hygiene, DOI: 10.1080/15459624.2022.2088772
Acknowledgements
This work was supported by NIOSH CAN93908S6.
- Angela L. Stastny, opf2@cdc.gov
- Amos Doepke, xbs7@cdc.gov
- Robert P. Streicher, rps3@cdc.gov
Contact
For further information contact:
Chemical and Biological Monitoring Branch (CBMB), Health Effects Laboratory Division (HELD), National Institute for Occupational Safety and Health (NIOSH), Cincinnati, OH
513-841-4428