Optical testing the compliance with regulatory standards of urea concentration in AdBlue® |
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| Carlo Anelli, Vanessa Pellicorio, Valentina Bello, Sabina Merlo |
- Abstract:
- This paper presents an absorption-based optical approach to check the compliance of urea concentration in AdBlue® with regulatory standards. The implemented low-cost and compact measuring system exploits two LEDs that emit in the SWIR spectral band, a glass capillary, and an amplified photodiode to detect the intensity of the radiation transmitted through the fluid under test. The functionality of the system has been demonstrated on urea–water solutions with urea concentrations from 0 up to 525 mg/mL. Thanks to the attained calibration curve, we retrieved the urea concentration of different AdBlue® samples, found in agreement with HPLC results. The proposed optical method allows to easily verify if the estimated urea concentration falls within the required range for AdBlue®.
- Download:
- IMEKO-TC2-2025-020.pdf
- DOI:
- 10.21014/tc2-2025.020
- Event details
- IMEKO TC:
- TC2
- Event name:
- IMEKO TC2 PhotoMet 2025
- Title:
2025 IMEKO TC2 International Symposium on Modern Photonic Metrology
PhotoMet 2025 - Shaping the Future of Photonic Metrology
- Place:
- Modena, ITALY
- Time:
- 01 September 2025 - 03 September 2025