Portable, lightweight, low power, ion chromatographic system with open tubular capillary columns

Kiplagat, Isaac K.; Kubáň, Petr; Pelcová, Pavlína; Kubáň, Vlastimil

doi:10.1016/j.chroma.2010.06.017

Cited by 41 publications

(17 citation statements)

References 44 publications

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“…Ion chromatography (IC) is a good candidate and the combination of IC‐C 4 D was further explored in the reviewed period. A portable IC with C 4 D was described for field analysis of inorganic cations and heavy metals . The IC column was an open‐tubular ion exchange capillary, which allowed for mobile phase distribution at low pressures, and the system was operated by gravity flow or using a small cylinder with pressurized air.…”

Section: C4d In Other Flow‐through Methodsmentioning

confidence: 99%

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Contactless conductivity detection for analytical techniques: Developments from 2010 to 2012

Kubáň

Hauser

2012

Electrophoresis

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The developments in the field of capacitively coupled contactless conductivity detection in the approximate period from July 2010 to June 2012 are traced. Few reports concerning fundamental studies or new detector designs have appeared. On the other hand, applications in standard CZE are flourishing and contactless conductivity measurements are increasingly being employed as part of novel or more sophisticated experimental systems. Work on the lab-on-chip devices integrating contactless conductivity detection is continuing. A range of reports on the use of the simple yet powerful detection technique of contactless conductivity measurements in chromatographic separation as well as for analytical methods not including a separation step have also appeared.

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Section: C4d In Other Flow‐through Methodsmentioning

confidence: 99%

“…(A) Photograph of a small portable ion chromatograph employing C 4 D reported by K iplagat et al . (B) Separation of metal cations.…”

Section: C4d In Other Flow‐through Methodsmentioning

confidence: 99%

Contactless conductivity detection for analytical techniques: Developments from 2010 to 2012

Kubáň

Hauser

2012

Electrophoresis

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“…These reductions in size have allowed construction of field-portable instruments that provide laboratory-quality results (Boring et al, 1998;Kiplagat et al, 2010).…”

Section: Ion Chromatography For Space Explorationmentioning

confidence: 99%

What Can In Situ Ion Chromatography Offer for Mars Exploration?

et al. 2014

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The successes of the Mars exploration program have led to our unprecedented knowledge of the geological, mineralogical, and elemental composition of the martian surface. To date, however, only one mission, the Phoenix lander, has specifically set out to determine the soluble chemistry of the martian surface. The surprising results, including the detection of perchlorate, demonstrated both the importance of performing soluble ion measurements and the need for improved instrumentation to unambiguously identify all the species present. Ion chromatography (IC) is the state-of-the-art technique for soluble ion analysis on Earth and would therefore be the ideal instrument to send to Mars. A flight IC system must necessarily be small, lightweight, low-power, and have low eluent consumption. We demonstrate here a breadboard system that addresses these issues by using capillary IC at low flow rates with an optimized eluent generator and suppressor. A mix of 12 ions known or plausible for the martian soil, including 4 (oxy)chlorine species, has been separated at flow rates ranging from 1 to 10 μL/min, requiring as little as 200 psi at 1.0 μL/min. This allowed the use of pneumatic displacement pumping from a pressurized aluminum eluent reservoir and the elimination of the high-pressure pump entirely (the single heaviest and most energy-intensive component). All ions could be separated and detected effectively from 0.5 to 100 μM, even when millimolar concentrations of perchlorate were present in the same mixtures.

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“…Although most of these sensors have the potential to detect minute amounts of analytes and have relatively low power requirements, one common shortcoming is their versatility. In this regard, separation‐based sensors based on chromatography or CE have the capacity to analyze a larger number of important analytes in the same sample without significant modifications of the hardware. In particular, CE‐based sensors offer unparalleled separation efficiency and throughput, require low consumption of power, and can be entirely controlled electronically.…”

Section: Introductionmentioning

confidence: 99%

Unmanned platform for long‐range remote analysis of volatile compounds in air samples

et al. 2012

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This paper describes a long-range remotely controlled CE system built on an all-terrain vehicle. A four-stroke engine and a set of 12-V batteries were used to provide power to a series of subsystems that include drivers, communication, computers, and a capillary electrophoresis module. This dedicated instrument allows air sampling using a polypropylene porous tube, coupled to a flow system that transports the sample to the inlet of a fused-silica capillary. A hybrid approach was used for the construction of the analytical subsystem combining a conventional fused-silica capillary (used for separation) and a laser machined microfluidic block, made of PMMA. A solid-state cooling approach was also integrated in the CE module to enable controlling the temperature and therefore increasing the useful range of the robot. Although ultimately intended for detection of chemical warfare agents, the proposed system was used to analyze a series of volatile organic acids. As such, the system allowed the separation and detection of formic, acetic, and propionic acids with signal-to-noise ratios of 414, 150, and 115, respectively, after sampling by only 30 s and performing an electrokinetic injection during 2.0 s at 1.0 kV.

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Portable, lightweight, low power, ion chromatographic system with open tubular capillary columns

Cited by 41 publications

References 44 publications

Contactless conductivity detection for analytical techniques: Developments from 2010 to 2012

Contactless conductivity detection for analytical techniques: Developments from 2010 to 2012

What Can In Situ Ion Chromatography Offer for Mars Exploration?

Unmanned platform for long‐range remote analysis of volatile compounds in air samples

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