Surface decontamination efficacy determination of DeconGel™ 1101 on stainless steel, aluminum, and concrete surfaces contaminated with Industrial Solvents (m-Cresol) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods 3500C (sampling) and 8321B (analysis).
Hazardous Materials Relevance
Meta-Cresol is a methylated aromatic phenolic liquid used as a disinfectant, deodorizer, precursor to insecticides, and as an industrial solvent. Cresol is a phenolic irritant that can cause a severe burning of sensitive tissues, and if ingested or absorbed at high levels can damage the kidneys, liver. Drain, and lungs. Cresol was chosen as a representative industrial solvent for evaluating DeconGel's efficacy; DeconGel is expected to have similar efficacy towards the wide range of industrial solvents.
- Excellent surface decontamination was achieved by applying DeconGel 1101 onto surfaces contaminated with industrial solvents (/n-cresol) resulting in encapsulation of contaminants by DeconGel s active components. Decontamination efficacies of DeconGel 1101 ranged from 99.4% (on concrete) to 99.8% (on aluminum) to 99.8% (on stainless steel) for m-Cresol 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 nicotine as well as DeconGel components. When necessary, experimental methods were customized to afford complete dissolution of organic contaminants. Additional y, 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 stainless steel, aluminum, and concrete surfaces contaminated with Industrial Solvents (m-cresol) as determined by residual swipe testing.