Analysis of potassium formate in airport storm water runoff by headspace solid-phase microextraction and gas chromatography-mass spectrometry.
Potassium formate was extracted from airport storm water runoff by headspace solid-phase microextraction (HS-SPME) and analyzed by GC-MS. Formate was transformed to formic acid by adding phosphoric acid. Subsequently, formic acid was derivatized to methyl formate by adding methanol. Using sodium [(2)H]formate (formate-d) as an internal standard, the relative standard deviation of the peak area ratio of formate (m/z 60) and formate-d (m/z 61) was 0.6% at a concentration of 208.5 mg L(-1). Calibration was linear in the range of 0.5-208.5 mg L(-1). The detection limit calculated considering the blank value was 0.176 mg L(-1). The mean concentration of potassium formate in airport storm water runoff collected after surface de-icing operations was 86.9 mg L(-1) (n=11) with concentrations ranging from 15.1 mg L(-1) to 228.6 mg L(-1).
Fries
Elke
E
Institute of Environmental Systems Research, University Osnabrueck, Osnabrück, Germany. fries@usf.uos.de
Klasmeier
Jörg
J
D000401:Aircraft; D005561:Formates / Q000032:analysis*; D005618:Fresh Water / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D011188:Potassium / Q000032:analysis*; D012044:Regression Analysis; D012680:Sensitivity and Specificity; D052617:Solid Phase Microextraction / Q000379:methods*; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000032:analysis*
D005561:Formates; D014874:Water Pollutants, Chemical; D011188:Potassium