Sentence examples for negative chemical from inspiring English sources

negative chemical ionization.

The derivatized alanine was analyzed by GC/MS, performed in the negative chemical ionization mode.

POPs were determined by gas chromatography/mass spectrometry in negative chemical ionization (GC/MS-NCI).

The negative chemical kinetic effect of the weak expansion wave passage was temporarily offset by the flame length increase.

Pt had a negative chemical interaction with Al and with Cr in such a way that Pt decreased their activities.

Negative chemical ionization (NCI) mode was used in mass spectrometry, reagent gas was methane, and the ionization energy was 70 eV.

Gas chromatography coupled with triple quadrupole mass spectrometer (GC MS/MS), working in the negative chemical ionization mode, was used to quantify the target analytes.

Assay of PFCAs was performed by using a gas chromatography triple quadrupole mass spectrometry (GC QqQ MS) system in negative chemical ionization mode with ammonia as reagent gas.

The concentrations and labeling of formate was assayed as the pentafluorobenzyl derivatives by NH3-negative chemical ionization as described below.

Gas chromatography negative chemical ionization-mass spectrometry (GC NCI-MS) was applied for sample detection.

Details of the methods have been previously reported [ 19, 20]The PCBs and most pesticides were measured with GC/negative chemical ionization spectrometry (GC/NCIMS).