Abstract: A method to measure the concentration of a constituent element in a gas sample contained in an analyzer. A sample cell of a detector has an inlet and an outlet. The outlet of the sample cell is sealed. A predetermined mass of a gas sample is received through the inlet into the sample cell over a predetermined pressurization period until substantially the entire mass of the gas sample contained in the analyzer is contained within the sample cell. The gas sample is pressurized to a predetermined pressure over the pressurization period. A concentration of a constituent element in the pressurized gas sample is determined.

Abstract: An analysis system and method including a combined purge and trap (P&T) concentrator and P&T autosampler (generally, together, “the P&T system”) in conjunction with a gas chromatograph may be under control of a microprocessor that may control the various valve operations, syringe operations, cleaning operations, sample acquisition, and the like. The system includes automatic controls to clean the various components of the system such as valves and pathways, etc., using methanol, perhaps combined other cleaning techniques, between samples so that any residual contaminates remaining in a part of the system from one sample are minimized from affecting the results of an analysis of a subsequent sample. The automated methanol rinse greatly improves accuracy of sample analysis from one sample to the next.

Abstract: A method to measure the concentration of a constituent element in a gas sample contained in an analyzer. A sample cell of a detector has an inlet and an outlet. The outlet of the sample cell is sealed. A predetermined mass of a gas sample is received through the inlet into the sample cell over a predetermined pressurization period until substantially the entire mass of the gas sample contained in the analyzer is contained within the sample cell. The gas sample is pressurized to a predetermined pressure over the pressurization period. A concentration of a constituent element in the pressurized gas sample is determined.

Abstract: An apparatus, system and method to measure the concentration of a constituent element in a gas sample contained in an analyzer. A sample cell has an inlet and an outlet. The inlet is to receive a predetermined mass of a gas sample and the outlet is to couple to a valve. The sample cell is to receive the predetermined mass of the gas sample over a predetermined pressurization period until substantially the entire mass of the gas sample contained in the analyzer is contained within the sample cell. The gas sample is pressurized to a predetermined pressure over the pressurization period. A detector cell is located adjacent to the sample cell. The detector cell is to determine a concentration of a constituent of the pressurized gas sample.

Abstract: A three stage needle for use with a sampling station of an autosampler to facilitate gas and liquid extractions and injections. The needle includes a bottom stage, a middle stage, and a top stage. Each of the stages of the needle includes at least one aperture used to extract gas or liquid from a specimen or perform an injection. In addition, each of the stages can be placed in fluidic communication with the sampling station to facilitate the desired extraction or injection.

Abstract: A sampling station for use with an autosampler is adapted to perform both gas and liquid extractions and automated injections. The sampling station includes a first flow path, a needle, an internal standards system, and an exit port. The needle is adapted to introduce a sample of a specimen to a first flow path. The internal standards system is used to introduce a known quantity of standard into the first flow path to combine with the sample. The sample can be provided to an analytical instrument through the exit port, which is in line with the first flow path.

Abstract: A three stage needle for use with a sampling station of an autosampler to facilitate gas and liquid extractions and injections The needle includes a bottom stage, a middle stage, and a top stage Each of the stages of the needle includes at least one aperture used to extract gas or liquid from a specimen or perform an injection. In addition, each of the stages can be placed in fluidic communication with the sampling station to facilitate the desired extraction or injection.