University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Formic acid

  • IUPAC Name: formic acid
  • Molecular Formula: CH2O2
  • CAS Registry Number: 64-18-6
  • InChI: InChI=1S/CH2O2/c2-1-3/h1H,(H,2,3)
  • InChI Key: BDAGIHXWWSANSR-UHFFFAOYSA-N

@ ChemSpider@ NIST@ PubChem

Citations 4

"Amperometric Detection Of Simple Alcohols In Aqueous Solutions By Application Of A Triple-pulse Potential Waveform At Platinum Electrodes"
Anal. Chim. Acta 1981 Volume 132, Issue 1 Pages 1-10
Scott Hughes, P. Lawrence Meschi and Dennis C. Johnson

Abstract: Application of a triple-pulse waveform is described for the anodic detection of methanol, ethanol, and ethylene glycol. The execution of the waveform incorporates the cleaning and reactivation of the platinum electrode, by alternate anodic and cathodic polarization, with measurement of the faradaic signal for the analyte at the reduced electrode surface. Some results for formic acid are also presented. The waveform is completed within approximately 2 s and the faradaic signal exhibits no decay with time as would be the case for amperometric detection at a constant applied potential. Calibration curves made by plotting -1/I vs. 1/C are linear. This is consistent with a reaction mechanism in which the analyte is adsorbed prior to anodic detection. The technique is applicable for detection in chromatographic and flow-injection systems.
Amperometry Electrode Voltammetry HPLC Potentiometry

"Flow Injection Single-point Titration Of Acids With Biamperometric Detection At Polarized Platinum Electrodes"
Anal. Chim. Acta 1987 Volume 194, Issue 1 Pages 269-274
Wojciech Matuszewski, Adam Hulanicki and Marek Trojanowicz

Abstract: Samples of acids (15 µL) were injected into a stream of water which was merged with a stream of 2 M NaI and 50 mM NaIO3 (2.4 mL min-1). The detector placed 10 cm from the merging point was a flow cell containing two 8-mm x 0.3-mm diameter platinum electrodes at a constant polarizing voltage of 100 mV. Rectilinear graphs of concentration. vs. current were obtained for 1 to 10 mM acid and, with online microcomputer data processing, a coefficient of variation <0.2% was achieved.
Biamperometry Electrode Titrations

"Determination Of Oxonium Ion In Strongly Ionisable Inorganic Acids And Determination Of Substituted Acetic Acids Using Flow Injection And Chemiluminescence Detection"
Analyst 1990 Volume 115, Issue 1 Pages 69-72
Issam M. A. Shakir and Azad T. Faizullah

Abstract: Samples (60 µL) of 200 mM of H2SO4, HCl, HClO4, HNO3 or H3PO4 were injected first into a water carrier stream (2 mL min-1) before combining with a BrO3- - Br- stream and entering the reaction coil with 100 mM H2O2 and 0.5 mM luminol in Na2CO3 solution The H3O+ concentration. was determined indirectly from the chemiluminescence peak intensity. The log. - log. calibration graphs were rectilinear. The method was applicable to chloroacetic and trichloro- and trifluori-acetic acids. Detection limits ranged from 4 mM for formic acid to 20 mM for H3PO4 and chloroacetic acid. The coefficient of variation were 1% (n = 4) and sample throughput was 90 h-1.
Chemiluminescence Calibration Detection limit

"Application Of The Flow Injection Analysis Method For Single-point Titration Of Acids"
Pr. Nauk. Inst. Chem. Nieorg. Metal Pierwiastkow R 1988 Volume 58, Issue 1 Pages 254-258
Matuszewski, W.

Abstract: Flow-injection single-point titration of acids is based on biamperometric measurement of iodine formed quant. in the reaction of iodide with iodate. Results are presented for determination of sulfuric, hydrofluoric, monochloroacetic, formic, and acetic acids. The slopes of the calibration plots, which are linear for about 1-10 mM acid, depend on the strength of the acid, decreasing from sulfuric acid to acetic acid. With microcomputer online data processing relative standard deviations were about 0.2%. (SFS)
Amperometry Titrations