Determination of non-methane total hydrocarbons by GDX-502 packed column
GDX-502 packed column for the determination of non-methane total hydrocarbons

Stationary phase: Silanized glass microspheres, 2m*3mm, 60-80 mesh
Stationary phase: GDX-502, 2m*1/8, 60-80 mesh

Tengzhou Haohao Chromatography Instrument Technology Service Co., Ltd., based on the actual situation of environmental monitoring work, the two-column double detector gas chromatography and the method of determining the blank value of hydrocarbon removal air were used to determine the content of non-methane hydrocarbons in the region. Some problems in the determination process of non-methane hydrocarbons are discussed. It is pointed out that there are also shortcomings in the determination of non-methane total hydrocarbons by two-column double detector gas chromatography: the response value of FID can not accurately and comprehensively reflect the pollution degree of air non-methane total hydrocarbons. .

Determination of non-methane total hydrocarbons by GDX-502 packed column

Solved the problem:
Interference peak problem
2. The problem of negative values of non-methane total hydrocarbons