Firstly, the water in the environmental sample goes through the on-line water removal device, and then it is absorbed into the low-temperature cold trap adsorption tube. Then, the adsorption tube is evaporated and heated to 250 ℃ for analysis. After the sample is injected, the carrier gas enters the precolumn for separation. After the target compound enters the analysis column, the valve is switched, and the carrier gas blows out the high boiling point compound from the precolumn for targeting The complex was further separated in the analytical column and detected by FPD.
Environmental air on-line monitoring or on-line monitoring of industrial waste gas such as scientific research, coking, gas making, papermaking, printing and dyeing, tanning and fiber.
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