1. Detection principle: vaporized sample, after chromatographic separation, use (TCD, etc.) to quantitatively detect CHONS (w%)

2. Samples: kerogen, coal, crude oil, chloroform bitumen A

3. Implementation standard: GB/T 19143-2003 “Analysis Method for Carbon, Hydrogen and Oxygen in Rock Organic Matter”

4. Instrument: FLASHEA-1112 Series Elemental Analyzer

5. Analysis process

Weigh the sample with a one-millionth balance, start the instrument to stabilize the voltage, turn on the helium and oxygen and adjust the pressure to 0.3-0.4MPa, adjust the instrument pressure to stabilize the gas pressure at 150kPa, start the EA300 data acquisition system, and adjust in the Load Method window Develop the analysis method of N, C, H, S elements, set the temperature of the combustion chamber at 950°C, and the temperature of the incubator reach 65°C and then measure the standard sample. When the difference between the measured value of each element and the standard value is within ±3 Put the weighed sample into the sample tray at ‰ to collect data automatically by the computer; call up the analysis method for O element in the Load Method window, set the temperature of the combustion chamber to 1060°C, and the temperature of the incubator to 75°C and stabilize the standard sample Determination, when the difference between the measured value of the element and the standard value is within ±3‰, put the prepared sample into the sample tray for computer automatic data collection;