Surface decontamination efficacy determination of DeconGel™ 1101 on stainless steel, carbon steel, floor tile, and concrete surfaces contaminated with potassium iodide (Kl) was performed with 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
Iodine and its compounds are used in medicine, photography, and the dye industry. Iodides are soluble in water and are concentrated in seawater. Iodine is an oxidizing irritant and allergen and is poisonous if taken orally in large amounts. Potassium iodide was chosen as a representative iodine compound for evaluating DeconGel's efficacy; DeconGel is expected to have similar efficacy towards the wide range of iodine compounds.
- Excellent surface decontamination was achieved by applying DeconGel 1101 onto surfaces contaminated with iodine compounds resulting in encapsulation of contaminants by DeconGel's active components. Decontamination efficacies of DeconGel 1101 ranged from 98.6% (on floor tile) to 98.7% (on concrete) to 98.8% (on carbon steel) to 99.5% (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 the 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, floor tile and concrete surfaces contaminated with potassium iodide as determined by residual swipe testing.