A Field-Portable Colorimetric Method for the Measurement of Peracetic Acid Vapors: A Comparison of Glass and Plastic Impingers
Updated May 31, 2023
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.
Publications based on Dataset
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 project was supported by the National Institute for Occupational Safety and Health (NIOSH). When a publication makes use of this dataset, acknowledgement of the development of the dataset should be attributed to the NIOSH Health Effects Laboratory Division.
We would also like to acknowledge the work of Angela L. Stastny, Amos Doepke, and Robert P. Streicher
Contact
NIOSH/Health Effects Laboratory Division
Chemical and Biological Monitoring Branch
(513) 841-4428