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- Publisher Website: 10.1021/acs.est.9b01032
- Scopus: eid_2-s2.0-85070878352
- PMID: 31352782
- WOS: WOS:000482521600035
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Article: A Droplet Microfluidic-Based Sensor for Simultaneous in Situ Monitoring of Nitrate and Nitrite in Natural Waters
Title | A Droplet Microfluidic-Based Sensor for Simultaneous in Situ Monitoring of Nitrate and Nitrite in Natural Waters |
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Authors | |
Issue Date | 2019 |
Citation | Environmental Science and Technology, 2019, v. 53, n. 16, p. 9677-9685 How to Cite? |
Abstract | Microfluidic-based chemical sensors take laboratory analytical protocols and miniaturize them into field-deployable systems for in situ monitoring of water chemistry. Here, we present a prototype nitrate/nitrite sensor based on droplet microfluidics that in contrast to standard (continuous phase) microfluidic sensors, treats water samples as discrete droplets contained within a flow of oil. The new sensor device can quantify the concentrations of nitrate and nitrite within each droplet and provides high measurement frequency and low fluid consumption. Reagent consumption is at a rate of 2.8 mL/day when measuring every ten seconds, orders of magnitude more efficient than those of the current state-of-the-art sensors. The sensor's capabilities were demonstrated during a three-week deployment in a tidal river. The accurate and high frequency data (6% error relative to spot samples, measuring at 0.1 Hz) elucidated the influence of tidal variation, rain events, diurnal effects, and anthropogenic input on concentrations at the deployment site. This droplet microfluidic-based sensor is suitable for a wide range of applications such as monitoring of rivers, lakes, coastal waters, and industrial effluents. |
Persistent Identifier | http://hdl.handle.net/10722/303619 |
ISSN | 2023 Impact Factor: 10.8 2023 SCImago Journal Rankings: 3.516 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Nightingale, Adrian M. | - |
dc.contributor.author | Hassan, Sammer Ul | - |
dc.contributor.author | Warren, Brett M. | - |
dc.contributor.author | Makris, Kyriacos | - |
dc.contributor.author | Evans, Gareth W.H. | - |
dc.contributor.author | Papadopoulou, Evanthia | - |
dc.contributor.author | Coleman, Sharon | - |
dc.contributor.author | Niu, Xize | - |
dc.date.accessioned | 2021-09-15T08:25:41Z | - |
dc.date.available | 2021-09-15T08:25:41Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Environmental Science and Technology, 2019, v. 53, n. 16, p. 9677-9685 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.uri | http://hdl.handle.net/10722/303619 | - |
dc.description.abstract | Microfluidic-based chemical sensors take laboratory analytical protocols and miniaturize them into field-deployable systems for in situ monitoring of water chemistry. Here, we present a prototype nitrate/nitrite sensor based on droplet microfluidics that in contrast to standard (continuous phase) microfluidic sensors, treats water samples as discrete droplets contained within a flow of oil. The new sensor device can quantify the concentrations of nitrate and nitrite within each droplet and provides high measurement frequency and low fluid consumption. Reagent consumption is at a rate of 2.8 mL/day when measuring every ten seconds, orders of magnitude more efficient than those of the current state-of-the-art sensors. The sensor's capabilities were demonstrated during a three-week deployment in a tidal river. The accurate and high frequency data (6% error relative to spot samples, measuring at 0.1 Hz) elucidated the influence of tidal variation, rain events, diurnal effects, and anthropogenic input on concentrations at the deployment site. This droplet microfluidic-based sensor is suitable for a wide range of applications such as monitoring of rivers, lakes, coastal waters, and industrial effluents. | - |
dc.language | eng | - |
dc.relation.ispartof | Environmental Science and Technology | - |
dc.title | A Droplet Microfluidic-Based Sensor for Simultaneous in Situ Monitoring of Nitrate and Nitrite in Natural Waters | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1021/acs.est.9b01032 | - |
dc.identifier.pmid | 31352782 | - |
dc.identifier.scopus | eid_2-s2.0-85070878352 | - |
dc.identifier.volume | 53 | - |
dc.identifier.issue | 16 | - |
dc.identifier.spage | 9677 | - |
dc.identifier.epage | 9685 | - |
dc.identifier.eissn | 1520-5851 | - |
dc.identifier.isi | WOS:000482521600035 | - |