Devices for micro gas chromatography and methods of making and uses thereof

A micro gas chromatographic device for rapid detection of volatile organic compounds in a sample comprising a plurality of volatile organic compounds, the micro gas chromatographic device comprising:

• a. a microfluidic separation column comprising a column inlet, wherein the microfluidic separation column is configured to provide partial or complete separation of the plurality of volatile organic compounds;
• b. a plurality of capillaries, wherein each capillary in the plurality of capillaries is independently in fluid communication with the microfluidic separation column at a capillary inlet, and wherein each capillary in the plurality of capillaries has a capillary outlet opposite the capillary inlet, thereby maintaining separate flow paths for individual analytes or analyte groups post-separation;
• and
• c. a plurality of micro-detectors, wherein each micro-detector in the plurality of micro-detectors is independently positioned at or near the capillary outlet of a capillary in the plurality of capillaries and is configured to detect specific volatile compounds or compound classes passing through the capillary, enabling selective and parallel detection of the individual analytes or the analyte groups.