A gas-liquid separator according to an embodiment of the present invention separates a mobile phase containing a gas and a liquid into a gas and a liquid. The gas-liquid separator according to the embodiment of the present invention includes an introduction flow channel to which a mobile phase is introduced, and a plurality of discharge flow channels connected to the introduction flow channel. A gas and a liquid are discharged from a discharge port of the discharge flow channel.

Determination of Analytes in a Sample Matrix by Solvent Extraction A method for the assay of one or more analytes in a sample matrix comprising the steps of: performing analyte extraction on the sample matrix, said analyte extraction comprising combining the sample matrix with a solvent for an extraction period which is less than that required for reaching equilibrium; and separating the analyte containing solvent from the sample matrix; next measuring a level of analyte present in the separated solvent; and then applying in a computer a calibration by which is established a mathematical relationship between levels of analyte extracted from each of a plurality of reference samples by means of the process employed above in the extraction for the sample matrix and a reference value of the levels of analyte for each reference sample to thereby derive a measure of the level of analyte in the sample matrix. Specifically a method to determine the amount of mycotoxins in cereal grain, especially OTA (ochratoxin A) and DON (deoxynivalenol) by mixing with a solvent comprising water alcohol mixture, with 20-40% ethanol by volume.

An improved device for collecting particulate matter suspended in the ambient air is disclosed comprising a container extending between an open first end and a closed second end defining a container interior. A container output communicates with a container interior located proximate the closed second end of the container. A filter cassette comprising a collection filter is permanently affixed to a filter holder. A retainer having a retainer input retains the filter cassette between the retainer input and the container output. An output connector connects the container output to a low pressure source for drawing ambient air into the retainer input for enabling the collection filter to collect particulate matter suspended in the ambient air entering the retainer input. Preferably, the filter holder and the filter are disposable.

A method of extracting an analyte from a sample is described where the sample includes water. The sample and polymeric drying agent are added to a container. The polymeric drying agent includes a cationic monomer, an anionic monomer, and a crosslinker. The polymeric drying agent is configured to sorb water from the sample.

The test device is provided with a testing means for testing an added extraction solution utilizing immunochromatography or nucleic acid chromatography, an extraction solution container, and a tubular guiding member having an extraction solution inflow port communicating with the extraction container in a sealed manner at one end side and having an extraction solution outflow port at the other end side. The guiding member is configured so as to have inside the tube a rod-shaped extraction solution guide having capillary action and having one end at the extraction solution outflow port side able to contact the testing means and so that the extraction solution absorbed from the extraction solution inflow port side at the extraction solution guide moves by capillary action through the inside of the extraction solution guide and is added to the testing means through the one end of the extraction solution guide contacting the testing means.

A platform for sampling viral particles on surfaces and porous structures and in the air. The sampling platform includes, for example, a collection pad configured for quantitating viral loads in a fomite or captured form the air. A reservoir or liquid container is associated with the collection pad for interacting a virus collection zone of the collection pad. A liquid medium is disposed within the container. At least one pump is operably configured to move the liquid medium or air through the collection pad for extracting viral particles from the environment.

The present disclosure relates to a method for detecting a compound, comprising the steps of: contacting a compound with a solid analytical surface (SAS), thereby forming an SAS with an absorbed compound; contacting the SAS with the absorbed compound with a mass tag, wherein the mass tag reacts with the absorbed compound, thereby forming an SAS with a covalently mass-tagged absorbed compound; and detecting the covalently mass-tagged absorbed compound by mass spectrometry. Also disclosed is a device for collecting breath aerosol, comprising a card or an envelope, wherein the card or the envelope comprise a tab, wherein the tab is a SAS.

A method and system are provided for extracting a target analyte from a sample using acoustic ejection technology. The method involves applying focused acoustic energy to a fluid reservoir housing a fluid composition that contains a target analyte and comprises an upper region and a lower region, where the concentration of the target analyte in the upper region differs from that in the lower region. The focused acoustic energy is applied in a manner that is effective to result in the ejection of a fluid droplet from the fluid composition into a droplet receiver, wherein the concentration of the analyte in the droplet corresponds to either the concentration of the analyte in the upper region or the concentration of the analyte in the lower region, and wherein the concentration of the analyte is substantially uniform throughout the droplet. The fluid composition may comprise an ionic liquid, used in the extraction of ionic target analytes. Related methods and an acoustic extraction system are also provided.

A system and method for compositional analysis of a process stream in an industrial process transports a liquid process stream through an absorption/desorption packed column (A/D column), along with a carrier gas. A gas phase combination of the carrier gas and one or more solutes from the liquid process stream is passed out of the A/D column to a flow cell for analysis by an analyzer to determine presence and concentration of the one or more solutes within the gas phase. A processor uses the concentration of the solutes within the gas phase to perform a headspace analysis to determine the concentration of the solutes in the process stream.

A device for collecting contaminants from water samples is provided. The device includes a solid sorbent that collects and stores the contaminants from water samples. The solid sorbent is configured to allow for the preservation of the stored contaminants. The concentrations of the contaminants in the water samples are determined via analysis of the solid sorbent or via elution of the stored contaminants from the sorbent and analysis of the eluate solution.