A low-cost method for determination of calcium carbonate in cement by membraneless vaporization with capacitively coupled contactless conductivity detection

Sereenonchai, Kamonthip; Teerasong, Saowapak; Chaneam, Sumonmarn; Saetear, Phoonthawee; Choengchan, Nathawut; Uraisin, Kanchana; Amornthammarong, Natchanon; Motomizu, Shoji; Nacapricha, Duangjai

doi:10.1016/j.talanta.2010.01.057

Cited by 24 publications

(15 citation statements)

References 22 publications

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“…On the other hand, new applications and new fields of applications are still being opened up. C 4 D has been adopted, for example, for chromatography (see, for example, reference [44]) or for flow‐injection analysis 45. One aspect, which the authors feel is important, is the fact that CE‐C 4 D is a simple, yet powerful technique.…”

Section: Discussionmentioning

confidence: 99%

Contactless conductivity detection for electrophoretic microseparation techniques

Duc

Hauser

2011

The Chemical Record

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The technique of capacitively coupled contactless conductivity detection for electrophoretic separations is discussed. The position of the combination of the two techniques, which both rely on the control of the movement of ions in the electric field, is highlighted. A brief historical overview and an introduction into the fundamental mechanisms is also given, but this exploration focuses mainly on the unique aspects of the intimate interfacing between ionic conduction in the measuring cell and the electronic conduction in the electronic detector circuitry. The general scope of application of the method is discussed as well as the recently introduced use of hydrodynamic pumping, which is a special feature of capillary electrophoresis with contactless conductivity, not possible with the standard UV-detection method.

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Section: Discussionmentioning

confidence: 99%

Contactless conductivity detection for electrophoretic microseparation techniques

Duc

Hauser

2011

The Chemical Record

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“…Sereenonchai et al . 111 recently published a system for the determination of carbonate in cement based on the vaporization of CO 2 followed by its collection in an acidic stream and quantification by conductivity measurement. Total organic carbon was determined by Tian and Dasgupta 112 also after conversion to CO 2 using a sequential injection analysis system and a detector similar to a C 4 D. Opekar et al .…”

Section: Broadening Of Scope – C4d In Other Flow‐through Methodsmentioning

confidence: 99%

Capacitively coupled contactless conductivity detection for microseparation techniques – recent developments

2010

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An overview of the developments of capacitively coupled contactless conductivity detection in CE and related techniques over approximately the last 2 years is given. The method has seen strong growth, and diverse new applications are being reported. Besides more advanced techniques on conventional capillaries, these include further developments of detection on lab-on-chip devices as well as in miniaturized chromatographic systems and some methods not involving separations. An increasing number of reports are based on the now readily available commercial detectors, but, while few publications on fundamental studies have appeared recently, interesting new approaches on creating low cost devices have also appeared.

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“…29 The design of the gas conversion tube is applicable and convenient for other gas convertible ions, such as NH4 + /NH3 and HCO3 -/CO2, in solid samples. 19,20 Conclusions A robust, low-energy consumption, and cost-effective manual flow-batch analysis system was successfully developed with a porous membrane based-diffusion scrubber for use in the colorimetric determination of sulfide in turbid water samples without using a conventional pump and valve. This device would be a useful tool for water resource monitoring and management.…”

Section: Benefits Of the Proposed Systemmentioning

confidence: 99%

“…The method is based on the liberation of CO2 gas in acidic conditions from HCO3 -/CO2 in the cement sample to dissolve into the acceptor solution without using a membrane, and finally, measuring the analyte signal by using a capacitively coupled contactless conductivity detection (C4D) at the outlet of the membraneless vaporization chamber. 19 Timofeeva et al reported an adapted gas-diffusion chamber with a membrane to connect with a flow injection analysis (GD-FIA) system for ammonium determination in building materials. 20 The method is based on the generation of ammonia gas from a solid sample by adding a basic solution.…”

Section: Introductionmentioning

confidence: 99%

Colorimetric Determination of Sulfide in Turbid Water with a Cost-effective Flow-batch Porous Membrane-based Diffusion Scrubber System

et al. 2020

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A cost-effective flow-batch analysis approach with colorimetric measurement has been developed for sulfide ion determination in turbid water samples without using a conventional pump and valve. Under an acidic condition, sulfide ion was converted to hydrogen sulfide gas and liberated out from other complicated matrices. The porous membranebased diffusion scrubber was utilized as a gas trapping unit for hydrogen sulfide gas separation/preconcentration. From the correlation of sulfide ion concentration and disappearance of sodium nitroprusside reagent detection by using a homemade LED-photodiode based colorimetry, a linear relationship of sulfide ion concentration and absorbance can be obtained with relative standard deviation (%RSD) less than 5%. The limit of detection was 5.6 μmol L-1. The proposed system was applied for sulfide ion determination in wastewater samples with the recoveries of 91.0-105.2%. The proposed system is a robust setup and able to handle turbid water samples without a sample filtering step.

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A low-cost method for determination of calcium carbonate in cement by membraneless vaporization with capacitively coupled contactless conductivity detection

Cited by 24 publications

References 22 publications

Contactless conductivity detection for electrophoretic microseparation techniques

Contactless conductivity detection for electrophoretic microseparation techniques

Capacitively coupled contactless conductivity detection for microseparation techniques – recent developments

Colorimetric Determination of Sulfide in Turbid Water with a Cost-effective Flow-batch Porous Membrane-based Diffusion Scrubber System

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