MilliporeSigma
  • Home
  • Search Results
  • Capillary electrophoresis with contactless conductometric detection for rapid screening of formate in blood serum after methanol intoxication.

Capillary electrophoresis with contactless conductometric detection for rapid screening of formate in blood serum after methanol intoxication.

Journal of chromatography. A (2013-02-20)
Petr Kubáň, František Foret, Robert Bocek
ABSTRACT

A new method for rapid, direct determination of formate in blood serum samples by capillary electrophoresis with contactless conductometric detection is presented. A selective separation of formate was achieved in approximately 1 min using an electrolyte system comprising 10 mM L-histidine, 15 mM glutamic acid and 30 μM cetyltrimethylammonium bromide at pH 4.56. The only sample preparation was dilution (1:100) with deionized water. The limit of detection and limit of quantitation was 2.2 μM and 7.3 μM, respectively, which corresponds to 0.22 mM and 0.73 mM in undiluted blood serum. The method provides a simple and rapid diagnostic test in suspected methanol intoxication cases. The method has been successfully tested on determination of formate in blood of a patient admitted to the hospital under acute methanol intoxication. The peak concentration of formate detected in the patient blood serum was 12.4mM, which is 10- to 100-fold higher than the normal values in healthy population. The developed method presents the fastest test currently available to detect formate in blood samples.

MATERIALS
Product Number
Brand
Product Description

Supelco
Ammonium formate, eluent additive for LC-MS, LiChropur, ≥99.0%
Sigma-Aldrich
Ammonium formate, ≥99.995% trace metals basis
Sigma-Aldrich
Calcium formate, BioUltra, ≥99.0% (T)
Sigma-Aldrich
Cesium formate, 98%
Sigma-Aldrich
Ammonium formate, BioUltra, ≥99.0% (calc. based on dry substance, NT)
Sigma-Aldrich
Basosiv M050, produced by BASF
Sigma-Aldrich
Thallium(I) formate, 97%
Sigma-Aldrich
Formic acid, ≥95%, FCC, FG
Sigma-Aldrich
Sodium formate, 99.998% trace metals basis
Sigma-Aldrich
Potassium formate, BioUltra, ≥99.0% (NT)
Sigma-Aldrich
Sodium formate-13C, 99 atom % 13C
Sigma-Aldrich
Potassium formate, ReagentPlus®, 99%
Sigma-Aldrich
Formic acid solution, BioUltra, 1.0 M in H2O
Sigma-Aldrich
Sodium formate, BioUltra, ≥99.0% (NT)
Sigma-Aldrich
Ammonium formate solution, BioUltra, 10 M in H2O
Supelco
Ammonium formate solution, 10 mM in H2O, suitable for HPLC