使用 Agilent 490 微型气相色谱对受污染的假冒制冷剂进行组分分析

The importance of refrigerant composition analysis became clear when contami- nated and counterfeit refrigerant 1,1,1,2-tetrafluorethane (R134a) appeared on the market. Chloromethane (R40), present in this counterfeit R134a, is found to be incompatible with aluminum surfaces in the refrigerant system. A chemical reaction takes place resulting in a pyrophoric compound upon contact with air. This applica- tion note highlights fast, on-site characterization of the refrigerant mixture using the Agilent 490 Micro GC. Agilent 490 微型气相色谱仪