MCHM and PPH at 1 μg/L in 6 mL water, 25% sodium chloride
SPME Assembly, 100 μm PDMS FS, 24 ga, Auto (Red) (57301)
5 min, headspace at 55 °C, with agitation
2 min, 270 °C (splitter open at 0.75 min)
Vocol, 20 m x 0.18 mm I.D. x 1.0 μm (28463-U)
50 °C (1 min), 15 °C/min to 220 °C (5 min)
270 °C
MSD, selected ion mode
220 °C
selected ion mode; m/z=110, 97 (MCHM) and m/z=94, 152 (PPH)
helium, 1 mL/min constant
SPME
0.75 mm I.D., SPME
In this application, an SPME method was developed for the analysis of two compounds involved in the chemical spill into the Elk River in West Virginia, which took place in January 2014. The method could easily detect both MCHM and PPH at a level of 1 μg/L from spiked surface water.
VOCOL is a registered trademark of Merck KGaA, Darmstadt, Germany