Surface decontamination efficacy determination of DeconGel™ 1101 on stainless steel, aluminum, and concrete surfaces contaminated with Organic Bases (Triethylamine (TEA)) was performed with GC/MS (Gas Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling) and 8270C (analysis).
Hazardous Materials Relevance
Tertiary amine bases such as TEA are used in the chemical industry as acid scavengers and are used to prepare quaternary ammonium compounds for the textile/dye industries. TEA is volatile and irritating to mucous membranes and skin and possesses an offensive fishy odor. TEA was chosen as a representative organic base compound; DeconGel is expected to have similar efficacy towards the full range of organic bases (amines).
- Excellent surface decontamination was achieved by applying DeconGel 1101 onto surfaces contaminated with organic bases (TEA) resulting in encapsulation of contaminants by DeconGel's active components. Decontamination efficacies of DeconGel 1101 ranged from 99.7% (on concrete) to 99.9% (on stainless steel) to 99.9% (on aluminum) for TEA as 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 triethylamine as well as DeconGel components. When deemed necessary, experimental methods were customized to afford complete dissolution of organic contaminants. Additionally, analytical methods and associated equipment (GC column, GC temperature 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 Organic Bases (TEA) as determined by residual swipe testing.