Inorganic Chemicals Industry >
Direct determination of trace dodecyl morpholine by gas chromatography-mass spectrometry
Received date: 2019-02-10
Online published: 2020-06-15
Aiming at the difficulty in the determination of reverse flotation reagents in potash production,a method for the direct determination of trace dodecyl morpholine by gas chromatography-mass spectrometry was established.The sample was dissolved and then three times extracted by n-hexane.The instrument conditions were as follows: chromatographic column TG-5MS,Length:30 m,ID:1.9 μm,Film:0.25 μm.Mass spectrum parameters:EI source,IonTemp erature:240 ℃,Capillary Temp:250 ℃.Sample Size:1 μL,Flow Velocity:1 mL/min and diffluence ratio was 40:1.Chromatographic column temperature was programmed temperature.The standard working curve was of good linearity,and the precision and recovery rate met the requirements of the analysis.The relative standard deviation was ≤2%.The detection limit of the method was 0.15 g/mL,and the limit of quantification was 0.5 g/mL.
Huibin Guo . Direct determination of trace dodecyl morpholine by gas chromatography-mass spectrometry[J]. Inorganic Chemicals Industry, 2019 , 51(8) : 76 -78 . DOI: 10.11962/1006-4990.2018-0505
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