Novel Low-Cost Smartphone Enabled Contaminant Detection Device

Abstract

Recently, ambulance acquired infections are of increasing concern as the scope of procedures that EMS personnel perform has increased. Cleaning assessment increases cleaning efficacy reducing acquired infections – however due to high initial cost of devices, ambulances cannot afford this assessment step. To address this, the team has created a low cost alternative to current ATP detection systems. The ATP in contaminants, combined with Luciferase, emits a light with intensity proportional to ATP concentration, indicating contamination. The team’s novel design uses a photodiode along with a Smartphone app in order to quantify light emission and provide fast, user friendly results. The light intensity this design can detect is 0.2 to 50 mW/cm2 at 520nm, a viable range for ATP detection

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