Towards the development of a fully integrated polymeric microfluidic platform for environmental analysis

Ramírez-García, Sonia; Baeza, Mireia; O'Toole, Martina; Wu, Yanzhe; Lalor, James; Wallace, Gordon G.; Diamond, Dermot

doi:10.1016/j.talanta.2008.04.002

Cited by 21 publications

(19 citation statements)

References 10 publications

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“…Flow rates for the microdevice were comparable to those for miniaturized commercial pumps, and analysis of nitrite solutions showed sub-ppm limits of detection. 359 An aerosol analyzer with a growth tube collector connected to a PDMS microchip was developed for online monitoring of aerosol composition (Figure 35). Air was pulled downward through the growth tube where the particles were enlarged and deposited into the microchip sample reservoir for μCE.…”

Section: Applicationsmentioning

confidence: 99%

Advances in Microfluidic Materials, Functions, Integration, and Applications

2013

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Section: Applicationsmentioning

confidence: 99%

Advances in Microfluidic Materials, Functions, Integration, and Applications

2013

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“…Most of the work on developing environmental methods for field applications has involved sensors or microfluidic devices for single analytes, or new miniature in situ water samplers, where the sample is recovered and analysed using conventional laboratory instrumentation (Bowden et al, 2002b;Datta and Banerjee, 2007;Gkritzalis-Papdopoulos et al, 2012;Jokerst et al, 2012). For field use, a lab-on-a-chip device of this nature offers huge potential advantages over existing in situ continuous monitoring technologies, because of robustness, reduced power and reagent requirements, reduced waste burden, and the capability to be hidden discretely to minimise interference by vandals (Ramirez-Garcia et al, 2008;Jokerst et al, 2012). The nature of these labon-a-chip devices would also mean that multiple locations throughout a catchment could be monitored easily within the framework of an integrated sensor network.…”

Section: The Practicalities and Challenges Of In Situ Monitoringmentioning

confidence: 99%

Hydrochemical processes in lowland rivers: insights from in situ, high-resolution monitoring

Wade

Palmer-Felgate

Halliday

et al. 2012

Hydrol. Earth Syst. Sci.

125

177

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Abstract. This paper introduces new insights into the hydrochemical functioning of lowland river systems using fieldbased spectrophotometric and electrode technologies. The streamwater concentrations of nitrogen species and phosphorus fractions were measured at hourly intervals on a continuous basis at two contrasting sites on tributaries of the River Thames -one draining a rural catchment, the River Enborne, and one draining a more urban system, The Cut. The measurements complement those from an existing network of multi-parameter water quality sondes maintained across the Thames catchment and weekly monitoring based on grab samples. The results of the sub-daily monitoring show that streamwater phosphorus concentrations display highly complex dynamics under storm conditions dependent on the antecedent catchment wetness, and that diurnal phosphorus and nitrogen cycles occur under low flow conditions. The diurnal patterns highlight the dominance of sewage inputs in controlling the streamwater phosphorus and nitrogen concentrations at low flows, even at a distance of 7 km from the nearest sewage treatment works in the rural River Enborne. The time of sample collection is important when judging water quality against ecological thresholds or standards. An exhaustion of the supply of phosphorus from diffuse and multiple septic tank sources during storm events was evident and load estimation was not improved by sub-daily monitoring beyond that achieved by daily sampling because of the eventual reduction in the phosphorus mass entering the stream during events. The results highlight the utility of sub-daily water quality measurements and the discussion considers the practicalities and challenges of in situ, sub-daily monitoring.

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“…Many groups involved in the production of microfluidics devices for FDS investigated microfabrication techniques 16,17 or developed support structures, such as pumps [18][19][20][21] and valves. 22 These papers show the importance of adjustments.…”

Section: Modifications Demanded For the Use Of Microfluidic Devices Imentioning

confidence: 99%

Applications of autonomous microfluidic systems in environmental monitoring

Campos

Silva

2013

RSC Adv.

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Concern about the environment is increasing and so is the search for analytical methods that make continuous monitoring possible. Microfluidic devices such as lab-on-a-chip emerge as an alternative to the laboratory-based conventional techniques, making possible the development of unmanned monitoring tools. This review covers the last five years on the application of autonomous microfluidic devices for continuous environmental monitoring and addresses the existing demands in this field.

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Towards the development of a fully integrated polymeric microfluidic platform for environmental analysis

Cited by 21 publications

References 10 publications

Advances in Microfluidic Materials, Functions, Integration, and Applications

Advances in Microfluidic Materials, Functions, Integration, and Applications

Hydrochemical processes in lowland rivers: insights from in situ, high-resolution monitoring

Applications of autonomous microfluidic systems in environmental monitoring

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