Surface decontamination efficacy determination of DeconGel™ 1101 on aluminum, carbon steel, and concrete surfaces contaminated with Phenolic Compounds (Catechol) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) in accordance with Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling) and 8321B (analysis).
Hazardous Materials Relevance
Catechol is an aromatic phenolic compound used as a precursor to produce pesticides, perfumes, and pharmaceuticals. Catechol shares similar chemical reactivity with phenol - an acidic aromatic irritant and corrosive capable of producing tissue-damaging phenoxyl radicals. Catechol was chosen as a representative phenolic compound for evaluating DeconGel's efficacy; DeconGel is expected to have similar efficacy towards the wide range of phenolic compounds.
- Excellent surface decontamination was achieved by applying DeconGel 1101 onto surfaces contaminated with phenolic compounds (catechol) resulting in encapsulation of contaminants by DeconGel's active components. Decontamination efficacies of DeconGel 1101 ranged from 97.3% (on concrete) to 99.2% (on carbon steel) to 99.2% (on aluminum) for Catechol determined by residual swipe analysis.
- Optimized experimental and analytical methods were successfully developed following standardized EPA sampling and analysis methods as guidelines for determination of organic compounds dissolved in a suitable solvent able to completely solvate catechol as well as DeconGel components. When necessary, experimental methods were customized to afford complete dissolution of organic contaminants. Additionally, analytical methods and associated equipment (LC column, LC gradient program, MS sample ionization parameters) were appropriately utilized to ensure accurate decontamination efficacy determination of DeconGel.
Table 1 shows the decontamination efficacies of DeconGel 1101 on aluminum, carbon steel, and concrete surfaces contaminated with Phenolic Compounds (catechol) as determined by residual swipe testing.