Journal article
Monitoring of drinking water quality using automated ATP quantification
Technical University of Denmark1
Edinburgh Napier University2
Technical University of Denmark3
Department of Environmental Engineering, Technical University of Denmark4
Epigem Limited5
Heriot-Watt University6
Urban Water Systems, Department of Environmental Engineering, Technical University of Denmark7
A microfluidic based system was developed for automated online method for the rapid detection and monitoring of drinking water contamination utilising microbial Adrenosine-5′-Triphosphate (ATP) as a bacterial indicator. The system comprises a polymethyl methacrylate based microfluidic cartridge inserted into an enclosure incorporating the functions of fluid storage and delivery, lysis steps and real-time detection.
Design, integration and operation of the resulting automated system are reported, including the lysis method, the design of the mixing circuit, the choices of flow rate, temperature and reagent amount. Calibration curves of both total and free ATP were demonstrated to be highly linear over a range from 2.5–5000 pg/mL with the limit of detection being lower than 2.5 pg/mL of total ATP.
The system was trialled in a lab study with different types of water, with lysis efficiency being found to be strongly dependent upon water type. Further development is required before online implementation.
| Language: | English |
|---|---|
| Year: | 2019 |
| Pages: | 105713 |
| ISSN: | 18728359 and 01677012 |
| Types: | Journal article |
| DOI: | 10.1016/j.mimet.2019.105713 |
| ORCIDs: | Tatari, K. and Albrechtsen, Hans-Jørgen |
