Surface decontamination efficacy determination of DeconGel 1101 on stainless steel, aluminum, carbon steel, and concrete surfaces contaminated with barium compounds (barium chloride (BaCl2) and barium carbonate (BaCO3)) 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
Barium and its compounds are utilized in the electronics industry as well as in the production of steel, fireworks, and pigments. Barium chloride is a water soluble salt of barium and is onsidered a severe health hazard and a poison. Barium carbonate is classified as an A4 carcinogen by ACGIH1
Barium and its compounds are considered hazardous and can produce adverse health effects in the case of skin contact, inhalation, or ingestion. Barium chloride and barium carbonate were chosen as representative barium compounds for evaluating DeconGel’s efficacy; DeconGel is expected to have similar efficacy towards the wide range of barium compounds.
- Excellent surface decontamination was achieved by applying DeconGel 1101 onto surfaces contaminated with barium compounds facilitating encapsulation/emulsification of contaminants by DeconGel’s active components. Decontamination efficacies of DeconGel 1101 ranged from 98.6% and 90.1% (on concrete) to 99.8% and 96.5% (on carbon steel) to 99.3% and 95.0% (on stainless steel) 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 inorganic compounds in aqueous samples. When deemed necessary, experimental methods were customized to afford complete dissolution of inorganic contaminants, and to ensure accurate decontamination efficacy determination of DeconGel.
Tables 1 and 2 show the decontamination efficacies of DeconGel 1101 on stainless steel, carbon steel, and concrete surfaces contaminated with barium chloride and barium carbonate as determined by residual swipe testing.