Fluid sampling system and method

A method for analyzing a material component of a liquid sample, the method comprising:

• supplying pressurized gas to a collection chamber;
• supplying the liquid sample to the collection chamber;
• heating the pressurized gas and the liquid sample to an extraction temperature;
• sparging the liquid sample with the pressurized gas to vaporize the material component from the liquid sample into the pressurized gas to form a sample gas;
• discharging a mixture of the liquid sample, the pressurized gas, and the sample gas from the collection chamber;
• reducing a pressure of the sample gas to bring the sample gas into an unsaturated state;
• conveying the reduced pressure sample gas to an analyzer;
• separating the pressurized gas from the mixture and conveying the pressurized gas to a bleed port;
• and
• conveying the liquid sample to a drain port.

A chemical extraction module comprising:

• a collection chamber;
• a gas supply line providing pressurized gas to the collection chamber, the gas supply line comprising a pressure reducing regulator, a check valve, and a tee fitting for introducing a liquid into the gas supply line;
• a heater assembled with the collection chamber and configured to heat the pressurized gas and the liquid to an extraction temperature, the collection chamber and heater being configured to vaporize a portion of the liquid into the pressurized gas at the extraction temperature to form a sample gas;
• an outlet port extending from the collection chamber to a first outlet passage for delivering the sample gas to an analyzer, and to a second outlet passage for delivering a mixture of the liquid and the pressurized gas to a drain port;
• a water sealing mechanism assembled with the second outlet passage and configured to separate the pressurized gas from the mixture in the second outlet passage, and to maintain the mixture at a positive pressure;
• and
• a pressure reducing mechanism assembled with the first outlet passage and configured to reduce a fluid pressure of the sample gas to bring the sample gas to an unsaturated state.