The present invention considers bringing a mobile unit closer to the site of interest and conduct the quantification of the tracers by performing the detection methods in situ and in real time at the wellhead, and that can be moved to the site on numerous occasions for the preparation of results during the test where the quantification of tracers is necessary, helping to speed up and reduce times that, until now, have not been achieved with stationary laboratories and that depending on the laboratory can last up to three months providing results.

A thermal desorption tube for chromatography and mass spectrometry analysis. The thermal desorption tube includes a sorbent and a plurality of focusing agents loaded at known, relative amounts onto the sorbent. Each focusing agent is a compound that chromatographically elutes within a retention time similar to a retention time of a target analyte and has a mass spectrum similar to a mass spectrum of the target analyte. The thermal desorption tube is configured to be further loaded with a sample having the target analyte.

A modular gas detection system includes a primary gas chromatograph, a constant volume extractor positionable to provide a continuous fluid sample to the primary gas chromatograph, and a total hydrocarbon analyzer. The modular gas detection system also includes a processing device and a memory device including instructions executable by the processing device for causing the processing device to perform operations. The operations include adjusting a detection scheme of the primary gas chromatograph to update a detection range for the continuous fluid sample to detect different hydrocarbons within a single column. Further, the operations include controlling routing of the continuous fluid sample from the constant volume extractor to the primary gas chromatograph and the total hydrocarbon analyzer.

A system includes a container to enclose vehicles within a chamber, an enclosed structure to house a canine to perform odor detection, and an air duct positioned therebetween. The container includes a first door, a second door, and a raised floor. The raised floor includes a first ramp leading to the first door, a second ramp leading to the second door, and sets of vent ducts defined between an outer wall and a top wall of the raised floor, the sets of vent ducts to direct air flow upwardly into the chamber of the container. The air duct includes a proximal end located proximate to an opening within the top wall of the container, a distal end fed through the enclosed structure to a canine-sniffing location, and one or more fan to pull air out of the chamber and deliver the air to the canine-sniffing location within the enclosed structure.

A volatile organic compound (VOC) testing system is provided that includes a plurality of valves, and a plurality of pumps. At least one of the pumps is coupled to at least one of the valves. A plurality of sensors are coupled to the pumps and at least one of the valves. The sensors detect one or more volatile organic compounds.

A thermal desorption tube for use with a battery power source that includes a tube body having a tube middle portion, a gas inlet, and a gas outlet, a heating element having a first element end and a second element end wherein the heating element is disposed within the tube body between the gas inlet and the gas outlet, wherein the heating element has a RTC value greater than 0.003 per degree Celsius, and wherein the first element end and the second element end are configured to electrically couple to a power source, and a sorbent material disposed within the tube middle portion wherein the sorbent material is disposed and occupies all available space within the tube middle portion surrounding, within and adjacent the heating element and wherein the sorbent material is in direct contact with the heating element.

A microscale collector and injector device comprises a microscale passive pre-concentrator (PP) and a microscale progressively-heated injector (PHI). The PP devices comprises first and second substrate portions, a first collection material, a PP heater, and an outlet. The first substrate portion defines an array of microscale diffusion channels. The first and second substrate portions cooperate to define a first compartment in fluid communication with the diffusion channels. The first collection material is disposed within the first compartment, at least partially surrounding the outlet. The PP heater is disposed in thermal communication with the second substrate portion. The PHI device comprises third and fourth substrate portions, a second collection material, and a plurality of PHI heaters. The third and fourth substrate portions cooperate to define a second compartment. The second collection material is disposed within the second compartment. The PHI heaters are disposed in thermal communication with the second compartment.

Certain configurations are described of column heaters that can be used in gas chromatography applications to provide individual heating zones along a gas chromatography column. The column heater may comprise a plurality of inductive elements that can be used to provide heating zones. A thermally conductive support can be used with the gas chromatography column and the inductive elements if desired. The column heater can be used to provide a travelling wave, a thermal gradient or other heating profiles.

A portable gas analysis apparatus for conducting a gas flow, in particular for highly volatile compounds, includes a seeker measurement path and a separation measurement path. The seeker measurement path extends from a sample gas inlet opening to a first air exit opening, wherein a connecting path branches off from the seeker measurement path to a separation measurement path, and said separation measurement path extends from the connecting path to a second air exit opening and is connected to a carrier gas inlet opening, wherein the gas analysis apparatus has a control element which is designed for reversing the gas flow in the connecting path.

A system and method for sample analysis using a portable gas chromatography (GC)-mass spectrometry (MS) is provided. The GC-MS system includes an injector configured to accept a sample containing a mixture of chemicals and release at least part of the sample for a separation by GC, a MEMS GC column with an integrated heater configured to accept and at least partly separate the mixture of chemicals, and a mass analyzer in a vacuum chamber configured to accept and mass-analyze the released separated chemicals. The MEMS GC column with the integrated heater is located mostly inside the MS vacuum chamber.