Parallel detection chromatography systems
First Claim
Patent Images
1. A high throughput liquid chromatography system comprising:
- a plurality of separation columns containing stationary phase material and adapted to perform a plurality of parallel chromatographic separations;
a plurality of flow-through detection regions in fluid communication with the plurality of separation columns, wherein each detection region of the plurality of detection regions includes an internal cavity having a flow axis;
a common radiation source for emitting radiation, wherein at least a portion of the radiation is transmitted into each detection region of the plurality of detection regions substantially coaxially with the flow axis of each detection region of the plurality of detection regions;
a wavelength selection element disposed between the common radiation source and the plurality of detection regions;
a multi-channel detector in sensory communication with each detection region of the plurality of detection regions; and
a plurality of fiber optic conduits disposed between the wavelength selection element and the plurality of detection regions for transmitting radiation emitted from the radiation source to the plurality of detection regions, wherein each fiber optic conduit of the plurality of fiber optic conduits has a first end that bounds a portion of the cavity of a different flow-through detection region of the plurality of detection regions.
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Abstract
High throughput liquid chromatography systems include multiple separation columns and multiple flow-through detection regions in sensory communication with a common radiation source and a multi-channel detector. Preferred detector types include a multi-anode photomultiplier tube, a charge-coupled device detector, a diode array, and a photodiode array. In certain embodiments, separation columns are microfluidic and integrated into a unitary microfluidic device. The optical path through a detection region is preferably coaxial with the path of eluate flow along a flow axis through a detection region. On-board or off-board detection regions may be provided.
118 Citations
31 Claims
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1. A high throughput liquid chromatography system comprising:
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a plurality of separation columns containing stationary phase material and adapted to perform a plurality of parallel chromatographic separations; a plurality of flow-through detection regions in fluid communication with the plurality of separation columns, wherein each detection region of the plurality of detection regions includes an internal cavity having a flow axis; a common radiation source for emitting radiation, wherein at least a portion of the radiation is transmitted into each detection region of the plurality of detection regions substantially coaxially with the flow axis of each detection region of the plurality of detection regions; a wavelength selection element disposed between the common radiation source and the plurality of detection regions; a multi-channel detector in sensory communication with each detection region of the plurality of detection regions; and a plurality of fiber optic conduits disposed between the wavelength selection element and the plurality of detection regions for transmitting radiation emitted from the radiation source to the plurality of detection regions, wherein each fiber optic conduit of the plurality of fiber optic conduits has a first end that bounds a portion of the cavity of a different flow-through detection region of the plurality of detection regions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A high throughput liquid chromatography system comprising:
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a plurality of separation columns containing stationary phase material and adapted to perform a plurality of parallel chromatographic separations; a plurality of flow-through detection regions in fluid communication with the plurality of separation columns, wherein each detection region of the plurality of detection regions has a flow axis; a common radiation source for emitting radiation, wherein at least a portion of the radiation is transmitted into each detection region of the plurality of detection regions substantially coaxially with the flow axis of each detection region of the plurality of detection regions; a wavelength selection element comprising a plurality of monochromators disposed between the common radiation source and the plurality of detection regions; and a multi-channel detector in sensory communication with each detection region of the plurality of detection regions.
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19. A high throughput liquid chromatography system comprising:
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a plurality of separation columns containing stationary phase material and adapted to perform a plurality of parallel chromarographic separations; a plurality of flow-through detection regions in fluid communication with the plurality of separation columns, wherein each detection region of the plurality of detection regions has a flow axis; a common radiation source for emitting radiation, wherein at least a portion of the radiation is transmitted into each detection region of the plurality of detection regions substantially coaxially with the flow axis of each detection region of the plurality of detection regions; a wavelength selection element comprising a plurality of wavelength dispersion elements disposed between the common radiation source and the plurality of detection regions; and a multi-channel detector in sensory communication with each detection region of the plurality of detection regions.
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20. A high throughput liquid chromatography system comprising:
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a plurality of separation columns containing stationary phase material and adapted to perform a plurality of parallel chromatographic separations; a plurality of flow-through detection regions in fluid communication with the plurality of separation columns, wherein each detection region of the plurality of detection regions has a flow axis; a common radiation source for emitting radiation, wherein at least a portion of the radiation is transmitted into each detection region of the plurality of detection regions substantially coaxially with the flow axis of each detection region of the plurality of detection regions; a wavelength selection element disposed between the common radiation source and the plurality of detection regions; a multi-channel detector in sensory communication with each detection region of the plurality of detection regions; and a photomask disposed between the wavelength selection element and the multi-channel detector.
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21. A high throughput liquid chromatography system comprising:
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a plurality of separation columns containing stationary phase material and adapted to perform a plurality of parallel chromatographic separations; a plurality of flow-through detection regions in fluid communication with the plurality of separation columns, wherein each detection region of the plurality of detection regions has a flow axis; a common radiation source for emitting radiation, wherein at least a portion of the radiation is transmitted into each detection region of the plurality of detection regions substantially coaxially with the flow axis of each detection region of the plurality of detection regions; a wavelength selection element disposed between the common radiation source and the plurality of detection regions; and a multi-channel detector in sensory communication with each detection region of the plurality of detection regions, wherein the multi-channel detector includes a reference channel used to correct signals received from at least one other channel of the multi-channel detector.
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22. A high throughput liquid chromatography system comprising:
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a plurality of separation columns containing stationary phase material and adapted to perform a plurality of parallel chromatographic separations; a plurality of flow-through detection regions in fluid communication with the plurality of separation columns, wherein each detection region of the plurality of detection regions includes an internal cavity having a flow axis; a common radiation source; a first plurality of fiber optic conduits optically coupled to the radiation source and to the plurality of detection regions, wherein each fiber optic conduit of the plurality of first fiber optic conduits is associated with a different detection region of the plurality of detection regions, has a first end bounding a portion of the cavity of its associated detection region, and transmits radiation to its associated detection region along the flow axis; and a multi-channel detector in sensory communication with each detection region of the plurality of detection regions. - View Dependent Claims (23)
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24. A high throughput liquid chromatography system comprising:
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a plurality of separation colunms containing stationary phase material and adapted to perform a plurality of parallel chromatographic separations; a plurality of flow-through detection regions in fluid communication with the plurality of separation columns, each detection region of the plurality of detection regions having a flow axis; a common radiation source; a plurality of optical conduits coupled to the radiation source and the plurality of detection regions, each optical conduit of the plurality of optical conduits being associated with a different detection region of the plurality of detection regions and transmitting radiation to its associated detection region along the flow axis; a wavelength selection element comprising a plurality of wavelength dispersion elements disposed between the common radiation source and the plurality of optical conduits; and a multi-channel detector in sensory communication with each detection region of the plurality of detection regions.
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25. A high throughput liquid chromatography system comprising:
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a plurality of separation columns containing stationary phase material and adapted to perform a plurality of parallel chromatographic separations; a plurality of flow-through detection regions in fluid communication with the plurality of separation columns, each detection region of the plurality of detection regions having a flow axis; a common radiation source; a plurality of optical conduits coupled to the radiation source and the plurality of detection regions, each optical conduit of the plurality of optical conduits being associated with a different detection region of the plurality of detection regions and transmitting radiation to its associated detection region along the flow axis; a wavelength selection element comprising a plurality of monochromators disposed between the common radiation source and the plurality of optical conduits; and a multi-channel detector in sensory communication with each detection region of the plurality of detection regions.
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26. A high throughput liquid chromatography system comprising:
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a plurality of separation columns containing stationary phase material and adapted to perform a plurality of parallel chromatographic separations; a plurality of flow-through detection regions in fluid communication with the plurality of separation columns, each detection region of the plurality of detection regions having a flow axis; a common radiation source; a plurality of optical conduits coupled to the radiation source and the plurality of detection regions, each optical conduit of the plurality of optical conduits being associated with a different detection region of the plurality of detection regions and transmitting radiation to its associated detection region along the flow axis; a wavelength selection element disposed between the common radiation source and the plurality of optical conduits; a multi-channel detector in sensory communication with each detection region of the plurality of detection regions; and a photomask disposed between the wavelength selection element and the multi-channel detector.
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27. A high throughput liquid chromatography system comprising:
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a plurality of separation columns containing stationary phase material and adapted to perform a plurality of parallel chromatographic separations; a plurality of flow-through detection regions in fluid communication with the plurality of separation columns, each detection region of the plurality of detection regions having a flow axis; a common radiation source; a plurality of optical conduits coupled to the radiation source and the plurality of detection regions, each optical conduit of the plurality of optical conduits being associated with a different detection region of the plurality of detection regions and transmitting radiation to its associated detection region along the flow axis; a wavelength selection element disposed between the common radiation source and the plurality of optical conduits; and a multi-channel detector in sensory communication with each detection region of the plurality of detection regions, wherein the multi-channel detector includes a reference channel used to correct signals received from at least one other channel of the multi-channel detector.
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28. A high throughput liquid analytical separation system comprising:
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a plurality of separation channels adapted to perform a plurality of parallel analytical separations; a plurality of flow-through detection regions in fluid communication with the plurality of separation channels, wherein each detection region of the plurality of detection regions includes an internal cavity; a common radiation source for emitting radiation, wherein at least a portion of the radiation is transmitted into each detection region of the plurality of detection regions; a multi-channel detector in sensory communication with each detection region of the plurality of detection regions; and a first plurality of fiber optic conduits optically coupling the radiation source and the plurality of detection regions, wherein each fiber optic conduit of the first plurality of fiber optic conduits is associated with a different detection region of the plurality of detection regions, and has a first end bounding a portion of the cavity of its associated detection region. - View Dependent Claims (29, 30, 31)
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Specification