Highly versatile and automated total ammonia nitrogen compact analyzer suitable for different types of water samples
Calvo-Lopez, Antonio (Universitat Autònoma de Barcelona. Departament de Química)
Alonso Chamarro, Julián (Universitat Autònoma de Barcelona. Departament de Química)
Puyol Bosch, M. del Mar (Universitat Autònoma de Barcelona. Departament de Química)

Date:	2023
Abstract:	Continuous monitoring of total ammonia nitrogen (TAN) currently needs to improve further not only to meet optimal analytical features but also to reduce equipment maintenance needs and avoid manual intervention. The development, evaluation in different aqueous samples (fresh and wastewater) and validation of a fully automated and adaptable miniaturized potentiometric analytical instrument with this purpose are presented. The main goals accomplished are a wider and adaptable working range (0. 08 to 1000 mg L-1 NH4+) with a detection limit of 0. 03 mg L-1 and a significant reduction of reagent and sample consumption, as well as waste generation, compared to current commercial potentiometric flow analyzers. Moreover, different programmable calibration and sample analysis protocols have been successfully applied. Finally, suitable analytical features in terms of accuracy and precision are achieved even with samples with very complex matrices without any pretreatment required.
Grants:	Agencia Estatal de Investigación CTQ2012-36165 Agencia Estatal de Investigación CTQ2017-85011-R Agencia Estatal de Investigación PID2020-117216RB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00124
Note:	Altres ajuts: acords transformatius de la UAB
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Estuarine ; Flow-injection system ; Gas-diffusion ; In-line ; Phosphorus ; Potentiometric analytical microsystem ; Spectrophotometric determination ; Responsible Consumption and Production
Published in:	Environmental Science: Water Research and Technology, Vol. 9, Issue 12 (October 2023) , p. 3366-3376, ISSN 2053-1419

DOI: 10.1039/d3ew00348e

11 p, 998.4 KB

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