The GC-7890 gas chromatograph is a multifunctional gas chromatograph recently launched by Shandong Jinpu Analytical Instrument Co., Ltd. It has a packed column injection port and a capillary injection port, with a large screen displaying both Chinese and English, and can be equipped with multiple detectors. External equipment such as headspace sampler, thermal analyzer, liquid automatic sampler, gas automatic sampler valve, etc. can be used in conjunction.

Analysis of Dimethyl Ether/Methanol/Water in Liquefied Gas

1. Gas chromatograph: thermal conductivity detector, sensitivity ≥ 2000mv. ml/mg (benzene)

2. Data processing: computer and N2000 chromatography workstation

3. Sample injector: Gas six way valve, quantitative tube 0.5-1mL. One liquefied gas sampler

4. Specialized chromatographic column: ￠ 4 × 4-meter stainless steel column

5. Standard gas: One bottle of dimethyl ether/methanol/water standard gas in liquefied gas

6. Analysis conditions: Column temperature: 80 ℃; Bridge current: 120mA; Gasification: 140 ℃, flow rate: 40ml/min; Detection: 120 ℃ Injection volume: 1mL