Improving Particle Collection Efficiency of Sampling Wipes Used for Trace Chemical Detection

Greg Gillen, Jeffrey Lawrence, Edward Sisco, Matthew Staymates, Jennifer Verkouteren, Elizabeth Robinson, Alexander Bulk

Research output: Contribution to journalArticlepeer-review

2 Scopus Citations


Improvement of the particle collection efficiency of sampling wipes is desirable for optimizing the performance of many wipe-based chemical analysis techniques used for trace chemical screening applications. In this note, commercially available Teflon coated fiberglass and calendered Nomex sampling wipes were modified by mechanically scoring the wipe surface to produce topography that promoted enhanced and localized particle collection. Wipe surface modifications improved particle collection efficiency, relative to unmodified wipes, by factors of 3 to 13 depending on sampling conditions, wipe type, and surface sampled. Improvements were demonstrated for both model polystyrene latex microspheres and inkjet printed explosive particles. The modifications also concentrated particles into pre-defined locations on the wipe which can be engineered to ensure maximum overlap with the thermal desorber of a trace contraband detection system allowing for more effective analysis of collected trace residues.

Original languageAmerican English
Pages (from-to)581-587
Number of pages7
JournalAnalytical Methods
Issue number5
StatePublished - 7 Feb 2022

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry.

NREL Publication Number

  • NREL/JA-5500-81914


  • chemical analysis
  • particle collection
  • sampling wipes


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