دورية أكاديمية
Robust off-grid analyser for autonomous remote in-situ monitoring of nitrate and nitrite in water
| العنوان: | Robust off-grid analyser for autonomous remote in-situ monitoring of nitrate and nitrite in water |
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| المؤلفون: | Simon Bluett, Paul O'Callaghan, Brett Paull, Eoin Murray |
| المصدر: | Talanta Open, Vol 7, Iss , Pp 100173- (2023) |
| بيانات النشر: | Elsevier, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Analytical chemistry |
| مصطلحات موضوعية: | Portable, In-situ water analysis, Internet-of-things (IoT), UV light-emitting diode, Nitrite and nitrate, 3D-printing, Analytical chemistry, QD71-142 |
| الوصف: | An off-grid, internet-of-things (IoT) connected ion chromatography analyser was developed for the real-time automated measurement of nitrate and nitrite levels in remote surface water applications. The system used KOH eluent with an AG15 guard column to achieve anion separation, in combination with a selective 235 nm UV-LED detector. A self-cleaning 3D printed Sediment Trap was developed to filter the sample before analysis, preventing silt and sediment from causing blockages and facilitating robust performance during long-term deployments. Laboratory tests showed reductions of up to 91% of total suspended solids and 61% of turbidity within the sample after a settling time of 5 min. In controlled temperature tests (7 to 40 °C), the average error in the detected concentration levels remained below 5%, indicating robust and repeatable performance of the analyser in varying environmental conditions. Two automated in-situ analysers were deployed at remote locations in West Cork, Ireland, for a period of one month. The deployments successfully demonstrated the capability of the system to detect transient pollution events, facilitating improved water-quality management of remote catchments. The analysers were monitored in real-time using a cellular IoT module and cloud-based dashboard. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2666-8319 94193436 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S266683192200090X; https://doaj.org/toc/2666-8319 |
| DOI: | 10.1016/j.talo.2022.100173 |
| URL الوصول: | https://doaj.org/article/cf291cb94193436b9104382f77810095 |
| رقم الأكسشن: | edsdoj.f291cb94193436b9104382f77810095 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 26668319 94193436 |
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| DOI: | 10.1016/j.talo.2022.100173 |