Determination of Aqueous Formic and Acetic Acids by Purge-and-Trap Analysis with a Needle-Type Extraction Device and Gas Chromatography Barrier Discharge Ionization Detector

Ueta, Ikuo; Nakamura, Yohei; Kawakubo, Susumu; Saito, Yoshihiro

doi:10.2116/analsci.34.201

Cited by 22 publications

(14 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[36] Formica cidh as strong irritation and causticity,a nd excessive exposure and accumulationc an lead to chemical pneumonitis, nerve injury and dermatosis. [36,37] Although people have carried out many methods to detectf ormic acid, such as, mass spectrometry or liquid and gas chromatography, [37][38][39][40][41] limitede xamples of selectives ensors for the formic acidv apor can be found in literature. Sensitive and selective detection of formic acid has great practical value, such as monitoring air quality,e nabling automatic pest control, and diagnosing health status, etc.…”

Section: Introductionmentioning

confidence: 99%

Proton‐Conductive 3D Ln^III Metal–Organic Frameworks for Formic Acid Impedance Sensing

Liu

Dou

et al. 2019

Chemistry An Asian Journal

View full text Add to dashboard Cite

Metal-organic frameworks (MOFs) as new classes of proton-conducting materialsh ave been highlighted in recent years. Nevertheless, the exploration of proton-conducting MOFs as formic acid sensors is extremelyl acking. Herein, we prepared two highly stable 3D isostructurall anthanide(III) MOFs, {(M(m 3 -HPhIDC)(m 2 -C 2 O 4 ) 0.5 (H 2 O))·2 H 2 O} n (M = Tb (ZZU-1); Eu (ZZU-2)) (H 3 PhIDC = 2-phenyl-1H-imidazole-4,5-dicarboxylic acid), in which the coordinated and uncoordinated water molecules and uncoordinated imidazole Na toms play decisive roles for the high-performancep roton conductiona nd recognition ability for formic acid.B oth ZZU-1 and ZZU-2 showt emperature-and humidity-dependent proton-conducting characteristics with high conductivities of 8.95 10 À4 and 4.63 10 À4 Scm -1 at 98 %R Ha nd 100 8C, respectively.I mportantly,t he impedance values of the two MOF-based sensors decrease upon exposure to formica cid vapor generated from formic aqueous solutions at 25 8Cw ith good reproducibility.B yc omparing the changes of impedance values, we can indirectly determine the concentration of HCOOHi na queous solution.T he results showedt hat the lowest detectablec oncentrations of formic acid aqueous solutions are 1.2 10 À2 mol L À1 by ZZU-1 and 2.0 10 À2 mol L À1 by ZZU-2.F urthermore,t he two sensors can distinguish formic acid vapor from interfering vapors including MeOH, N-hexane, benzene, toluene, EtOH, acetone,a cetic acid and butane. Our research provides a new platform of proton-conductive MOFs-based sensors for detecting formic acid.[a] R.

show abstract

Section: Introductionmentioning

confidence: 99%

Proton‐Conductive 3D Ln^III Metal–Organic Frameworks for Formic Acid Impedance Sensing

Liu

Dou

et al. 2019

Chemistry An Asian Journal

View full text Add to dashboard Cite

show abstract

“…Introducing a vacuum air sampling syringe, it takes about only 5 minutes to complete a typical air volume of 100 mL. Volatile organic compounds were also extracted from various aqueous matrices such as surface water and drinking water [94][95][96][97][98][99][100]. …”

Section: Needle-type Sample Preparation Devicementioning

confidence: 99%

Miniaturization for the Development of High Performance Separation Systems

Saito

Ueta

2017

Chromatography

Self Cite

View full text Add to dashboard Cite

Miniaturization is a key technological approach to realize high performance separation systems that have several important features required in modern analytical methods. A smaller scale of the stationary phase synthesis enables a systematic analysis of the retention behavior and also a more efficient development of novel stationary phases in liquid chromatography. Development of microscale sample preparation technique has been regarded as a valuable supporting approach to the development of microscale separation methods. Effective on-line coupling of the microscale sample preparation and separation allows an efficient and rapid analysis without a loss of sensitivity for most of the analytical separations. In this review, development of the miniaturized separation techniques and the applications have been described from the view point of the authors' research group, including the development of novel stationary phase, microscale sample preparation techniques for liquid and gas sample matrices.

show abstract

“…Especially, miniaturized extraction devices are one of the most important approaches because they enable reducing the amount of sample and solvent, as well as the analytical time cost. [9][10][11] Our research group have developed a miniaturized extraction capillary for the HPLC analysis of organic compounds. The extraction capillary was prepared by packing a particulate extraction medium into a stainless-steel capillary of 0.8 mm i.d.…”

Section: Introductionmentioning

confidence: 99%

Polyethylene Terephthalate Nanofiber Sheet as the Novel Extraction Medium for the Determination of Phthalates in Water Samples

et al. 2019

Self Cite

View full text Add to dashboard Cite

A novel extraction medium was developed by packing polyethylene terephthalate (PET) nanofiber sheet having a diameter of 500 nm into a stainless-steel capillary of 0.8 mm inner diameter. The nanofiber was prepared by a carbon dioxide (CO2) laser supersonic multi-drawing method, which has a significantly higher surface area than the original PET fiber. A nanofiber sheet was prepared by winding the nanofibers. Extraction of phthalates in water samples by a PET nanofiberpacked extraction capillary was investigated using a conventional high-performance liquid chromatography (HPLC). Water samples were introduced into the extraction capillary with a low pressure. After extracting the water sample, the extraction capillary was directly connected to a six-port valve of HPLC with a PEEK nut, and the extracted analytes were desorbed, followed by injection to an HPLC system using a small amount of organic solvent. In this manuscript, the fundamental performance of the nanofiber sheet-packed extraction capillary for the extraction of organic compounds in water samples is quantitatively evaluated using a conventional HPLC system.

show abstract

Determination of Aqueous Formic and Acetic Acids by Purge-and-Trap Analysis with a Needle-Type Extraction Device and Gas Chromatography Barrier Discharge Ionization Detector

Cited by 22 publications

References 30 publications

Proton‐Conductive 3D Ln^III Metal–Organic Frameworks for Formic Acid Impedance Sensing

Proton‐Conductive 3D Ln^III Metal–Organic Frameworks for Formic Acid Impedance Sensing

Miniaturization for the Development of High Performance Separation Systems

Polyethylene Terephthalate Nanofiber Sheet as the Novel Extraction Medium for the Determination of Phthalates in Water Samples

Contact Info

Product

Resources

About

Determination of Aqueous Formic and Acetic Acids by Purge-and-Trap Analysis with a Needle-Type Extraction Device and Gas Chromatography Barrier Discharge Ionization Detector

Cited by 22 publications

References 30 publications

Proton‐Conductive 3D LnIII Metal–Organic Frameworks for Formic Acid Impedance Sensing

Proton‐Conductive 3D LnIII Metal–Organic Frameworks for Formic Acid Impedance Sensing

Miniaturization for the Development of High Performance Separation Systems

Polyethylene Terephthalate Nanofiber Sheet as the Novel Extraction Medium for the Determination of Phthalates in Water Samples

Contact Info

Product

Resources

About

Proton‐Conductive 3D Ln^III Metal–Organic Frameworks for Formic Acid Impedance Sensing

Proton‐Conductive 3D Ln^III Metal–Organic Frameworks for Formic Acid Impedance Sensing