Surface decontamination efficacy determination of DeconGelTM 1101 on stainless steel, carbon steel, and concrete surfaces contaminated with arsenic (arsenic trioxide (As2O3)) was performed using ICP-OES (Inductively Coupled Plasma-Optical Emission Spectroscopy) according to Environmental Protection Agency (EPA) SW-846 Methods: 3005A (sampling) and 6010C (analysis).
Hazardous Materials Relevance
Arsenic compounds are used as insecticides and are used to make semiconductors. Arsenic compounds are inhalation hazards and are toxic if ingested. Arsenic Trioxide was chosen as a representative arsenic compound for evaluating DeconGel’s efficacy; DeconGel is expected to have similar efficacy towards the wide range of arsenic compounds.
- Excellent surface decontamination was achieved by applying DeconGel 1101 onto surfaces contaminated with arsenic (arsenic trioxide) resulting in encapsulation of contaminants by DeconGel’s active components. Decontamination efficacies of DeconGel 1101 ranged from 99.8% (on concrete) to 99.3% (on carbon steel) to 99.6% (on stainless steel) as determined by swipe analysis.
- Optimized experimental and analytical methods were successfully developed following standardized EPA sampling and analysis methods as guidelines for determination of inorganic compounds in aqueous samples. When necessary, experimental methods were customized to afford complete dissolution of inorganic contaminants, and to ensure accurate decontamination efficacy determination of DeconGel.
Table 1 shows the decontamination efficacies of DeconGel 1101 on stainless steel, carbon steel, and concrete surfaces contaminated with arsenic trioxide as determined by residual swipe testing.