IN SITU SENSING OF COMPOUNDS

摘要

The disclosure features systems and methods for detecting organic compounds that include: (a) a transfer line; (b) a probe connected to a first end of the transfer line, the probe including an inlet port and a membrane positioned across an opening in the inlet port; (c) an analysis unit connected to a second end of the transfer line; and (d) an electronic controller. The analysis unit can include a valve featuring multiple ports, a first detection unit configured to measure a photoionization current, and a second detection unit configured to identify chemical compounds, and a trap configured to condense chemical compounds from a vapor phase to a liquid phase. The electronic controller is connected to the valve, the first and second detection units, and the trap.

主权项

1. A system for detecting organic compounds, the system comprising:
a transfer line; a probe connected to a first end of the transfer line, the probe comprising an inlet port and a membrane positioned across an opening in the inlet port; an analysis unit connected to a second end of the transfer line and comprising:
a valve comprising multiple ports, wherein a first one of the multiple ports is connected to the transfer line;a first detection unit configured to measure a photoionization current for chemical compounds and connected to a second one of the multiple ports;a second detection unit configured to identify chemical compounds and connected to a third one of the multiple ports;a trap configured to condense chemical compounds from a vapor phase to a liquid phase, and connected to a fourth and a fifth ones of the multiple ports; and an electronic controller connected to the valve, the first and second detection units, and the trap.