Methods and systems for chemical analysis. For instance, a device for chemical analysis of a sample includes a housing, an inlet, a pump, multiple membranes and at least one detector. The housing contains an interior chamber of the device. The inlet on the housing introduces the sample into the interior chamber. The pump is connected to the housing to form a partial vacuum in the interior chamber. The multiple membranes have different response times to different constituents of the sample. The multiple membranes include at least a first membrane and a second membrane. At least one of the first membrane and the second membrane comprises a tubular portion. The multiple membranes have different response times to different constituents of the sample. The detector is for detecting the different constituents of the sample after interaction with the multiple membranes. In addition, a method for chemical analysis of a sample. A first step includes introducing a sample to multiple membranes having different response times to different constituents of the sample. A second step includes separating the different constituents of the sample due to the different response times of the multiple membranes. A third step includes detecting the different constituents of the gas after separating with the multiple membranes.

A column-sealing tool is provided for use during decoupling of a capillary column from a gas chromatography-mass spectrometry (GC-MS) system. The column-sealing tool includes an engagement structure for removably securing the column-sealing tool within a high vacuum enclosure of the GC-MS system, at a location between a high vacuum end of a transfer line and a mass analyzer of the GC-MS system. Additionally, the column-sealing tool includes a sealing element that is actuatable between a non-sealing position and a sealing position. During use the sealing element forms a secondary vacuum seal with the first end of the transfer line when the column-sealing tool is inserted into the GC-MS system and when the sealing element is in the sealing position.

An electronic device 1 for analyzing a gas composition, which is present in an environment A at an environment pressure Pa, is described. The device 1 is portable and comprises a gas sampling module 7, an ion filtering module 8 and an ion detecting module 9. The sampling module 7 is configured to adjust an input gaseous flow Fi of gaseous particles from the environment A and to ionize said gaseous particles and to generate an ion flow I having an ion composition representative of the gas composition to be analyzed. The ion filtering module 8 is configured to controllably select at least one type of ions present in the ion flow I and to generate a corresponding at least one homogeneous ion beam I. The ion detecting module 9 is configured to measure the intensity of such least one ion beam I.

A column-sealing tool is provided for use during decoupling of a capillary column from a gas chromatography-mass spectrometry (GC-MS) system. The column-sealing tool includes an engagement structure for removably securing the column-sealing tool within a high vacuum enclosure of the GC-MS system, at a location between a high vacuum end of a transfer line and a mass analyzer of the GC-MS system. Additionally, the column-sealing tool includes a sealing element that is actuatable between a non-sealing position and a sealing position. During use the sealing element forms a secondary vacuum seal with the first end of the transfer line when the column-sealing tool is inserted into the GC-MS system and when the sealing element is in the sealing position.

A system for analyzing an analyte is described herein. The system includes a chamber having an inlet and a semi-permeable membrane arranged to seal the inlet. The semi-permeable membrane includes a cross-linked mixture of a first compound and a second compound. The system can also include a radiation source arranged in the vacuum chamber, the radiation source spaced apart from the semi-permeable membrane and adapted to irradiate the semi-permeable membrane with electromagnetic radiation at a frequency at least partially absorbed by the semi-permeable membrane.

A secondary battery is fixed in a sealed container. A first tool unit and a second tool unit are provided on the sealed container. The first tool unit is formed from a first tool and a first holder. The second tool unit is formed from a second tool and a second holder. The first holder holds the first tool while maintaining airtightness of the sealed container, while allowing an advancing/retreating movement and a tilting movement of the first tool. The second holder has a structure similar to that of the first holder.

A portable system 1 for analyzing gaseous flows that vary over time is described, the system comprising a sampling chamber 18, a gas sampling module 7, an ion filtering module 8 and an ion detecting module 9. The sampling chamber 18 is suitable to be kept at a controlled sampling pressure Pc, and is configured to receive at least one gaseous flow F having a gaseous composition to be analyzed that is variable over time. The gas sampling module 7, arranged in fluidic communication with the sampling chamber 18, is configured to adjust an input gaseous flow Fi of gas particles from the sampling chamber 18, and an output gaseous flow Fo from the sampling module 7, so as to reproduce inside the sampling module 7 a gaseous composition representative of the gaseous composition to be analyzed. The gas sampling module 7 is further configured to ionize said gas particles and to emit the produced ions, so as to generate an ion flow I having an ion composition representative of the gaseous composition to be analyzed. The sampling module 7 is also suitable to maintain inside it a controlled ionization pressure Pi, and it is also configured in such a way that the input gaseous flow Fi comprises a plurality of micro-flows at a molecular or predominantly molecular regime, at the sampling pressure Pc, and the output gaseous flow Fo is a flow at a molecular or predominantly molecular regime, at the ionization pressure Pi. The ion filtering module 8 is operatively connected to the sampling module 7 to receive the ion flow I, and is configured to controllably select at least one type of ion present in the ion flow I and to generate a corresponding at least one homogeneous ion beam I, having an intensity representative of the concentration of the corresponding gas particle in the gaseous composition to be analyzed. The ion detecting module 9 is operatively connected to the ion filtering module 8 to receive the at least one ion beam I, and is configured to measure the intensity of the at least one ion beam I and to generate a corresponding electric signal S representative of the concentration of the corresponding gas particle in the gaseous composition to be analyzed.

An electronic device 1 for analyzing a gas composition, which is present in an environment A at an environment pressure Pa, is described. The device 1 is portable and comprises a gas sampling module 7, an ion filtering module 8 and an ion detecting module 9. The sampling module 7 is configured to adjust an input gaseous flow Fi of gaseous particles from the environment A and an output gaseous flow Fo so as to reproduce inside the sampling module 7 a gas composition representative of the gas composition to be analyzed. In addition, the sampling module 7 is configured to ionize said gaseous particles and to emit the ions produced, so as to generate an ion flow I having an ion composition representative of the gas composition to be analyzed. The ion filtering module 8 is operatively connected to the sampling module 7 to receive the ion flow I, and is configured to controllably select at least one type of ions present in the ion flow I and to generate a corresponding at least one homogeneous ion beam I, having an intensity representative of the concentration of the corresponding gas particle in the gaseous composition to be analyzed. The ion detecting module 9 is operatively connected to the ion filtering module 8 to receive the at least one ion beam I, and is configured to measure the intensity of such least one ion beam I and to generate a corresponding electric signal S representative of the concentration of the corresponding gas particle in the gaseous composition to be analyzed.

The device 1 further comprises pumping means 95, configured to extract gas from the device 1, so as to control an ionization pressure Pi that is present inside the sampling module 7. The sampling module 7 is configured in such a way that the input gaseous flow Fi comprises a plurality of micro-flows at a molecular or predominantly molecular regime, at the environment pressure Pa, and the output gaseous flow Fo is a flow at a molecular or predominantly molecular regime, at the ionization pressure Pi.

A column-sealing tool is provided for use during decoupling of a capillary column from a gas chromatography-mass spectrometry (GC-MS) system. The column-sealing tool includes an engagement structure for removably securing the column-sealing tool within a high vacuum enclosure of the GC-MS system, at a location between a high vacuum end of a transfer line and a mass analyzer of the GC-MS system. Additionally, the column-sealing tool includes a sealing element that is actuatable between a non-sealing position and a sealing position. During use the sealing element forms a secondary vacuum seal with the first end of the transfer line when the column-sealing tool is inserted into the GC-MS system and when the sealing element is in the sealing position.

It is provided a device and method for extracting gaseous and liquid products from a reaction fluid, in particular from an electrochemical reaction systems.