Trace Impurity Analysis

Impurity gas analysis is necessary in industries such as petrochemical, chemical, medical, and foods. Precisely controlled GC enables identification and quantitation of a trace amount of impurities in bulk gas. If the gas resources in a factory consist of multiple lines, a sample line selector can be utilized to switch sample lines automatically, allowing a single GC to analyze all samples.
Model: Nexis GC-2030, GC-2014
Standard | Analyzer Name | Compounds | %, ppm | Main Component | Analysis Time | Application Data Sheet |
---|---|---|---|---|---|---|
ASTM D2504 | TH2 | H2 | ppm | C2 and Lighter Hydrocarbon | 5 minutes | ADS-063 |
TNO | O2, N2 | ppm | C2 and Lighter Hydrocarbon | 5 minutes | ADS-064 | |
TCC | CO, CO2, CH4 | ppm | C3 and Lighter Hydrocarbon | 20 minutes | ADS-065 | |
HC3 | Inorganic gases | ppm | C4 and Lighter Hydrocarbon | 7 minutes | ADS-168 | |
UOP 603 | CCC6 | Trace CO and CO2 in hydrogen/ light gaseous hydrocarbons | ppm | Light gaseous hydrocarbons | 15 minutes | ADS-178 |
Trace Impurity Analysis in He gas
Impurities in He can be measured with a single analysis. This example shows an analysis with BID.
Target compounds | Concentration |
H2 | 100 ppb |
O2 | 100 ppb |
N2 | 100 ppb |
CO | 100 ppb |
CH4 | 100 ppb |
CO2 | 100 ppb |
Chromatogram (Detector : BID)

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