Improved analysis of propylene oxide, propylene chlorohydrin and propylene bromohydrin

Vortrag

Autor/innen

  • Wiley A. Hall Safe Food Alliance, 2037 Morgan Drive, Kingsburg CA 93631
  • Spencer S. Walse USDA-ARS-SJVASC, 9611 Riverbend Drive, Parlier, CA 93648
  • Leonel Jimenez Horn Technologies & Services Inc, 2020 S Golden State Blvd Ste 103, Fowler, CA 93625

DOI:

https://doi.org/10.5073/jka.2018.463.130

Schlagworte:

propylene oxide, fumigation, sterilent, headspace-SPME, pesticide degradants

Abstract

The benefits and deficiencies of several methods of analysis for PPO and PXH, including the aqueous extraction used in ASTA method 23.1 and the MTBE extraction method previously reported by the authors, will be discussed. Novel methods utilizing dynamic headspace extraction and solid phase microextraction (SPME) will also be reported with particular emphasis on preventing artefactual effects. Preliminary experiments have found that dynamic headspace sampling can lower detection limits by up to 3 orders of magnitude.

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Veröffentlicht

2018-10-29