GAS FLOW NEBULIZER

1 . A nebulizer comprising:

a gas transport conduit having a gas inlet for receiving a nebulizer gas and an outlet, the gas transport conduit defining a longitudinal axis along a flow direction of the nebulizer gas; and

an analyte supply conduit extending into the gas transport conduit along the longitudinal axis, the analyte supply conduit having at least one side aperture configured to emit analyte from the analyte supply conduit into the gas transport conduit in a direction off-axis from the longitudinal axis of the gas transport conduit.

2 . The nebulizer of claim 1 , wherein the at least one side aperture of the analyte supply conduit is configured to emit the analyte in a direction substantially perpendicular to the flow direction of the nebulizer gas in the gas transport conduit.

3 . The nebulizer of claim 1 , wherein the at least one side aperture of the analyte supply conduit is upstream of the outlet of said gas transport conduit.

4 . The nebulizer of claim 1 , wherein the at least one side aperture of the analyte supply conduit is configured to emit the analyte at an acute angle with respect to a flow direction of the nebulizer gas in the gas transport conduit.

5 . The nebulizer of claim 1 , wherein the analyte supply conduit has an analyte inlet configured to receive the analyte from an analyte supply source.

6 . The nebulizer of claim 5 , wherein the analyte inlet is at a first end of the analyte supply conduit, the analyte supply conduit having a closed second end that is opposite the first end.

7 . The nebulizer of claim 6 , wherein the closed second end comprises a dome extending away from the analyte supply conduit.

8 . The nebulizer of claim 1 , wherein the at least one side aperture is configured to emit solvated analyte from the analyte supply conduit into the gas transport conduit.

9 . The nebulizer of claim 1 , wherein the at least one side aperture comprises a coating configured to reduce liquid wetting on a surface of the analyte supply conduit.

10 . The nebulizer of claim 1 , wherein the at least one side aperture comprises at least two side apertures on opposing sides of the analyte supply conduit.

11 . The nebulizer of claim 8 , wherein the at least two side apertures comprise a first and second aperture, the first aperture being offset from the second aperture along an axis of the analyte supply conduit.

12 . The nebulizer of claim 1 , wherein the gas transport conduit comprises a nebulizer gas transport conduit, the nebulizer further comprising an outer gas transport conduit, wherein the nebulizer gas transport conduit extends into the outer gas transport conduit, the outer gas transport conduit having an outer gas inlet and an outer gas outlet configured to deliver a gas to a mass analyzer.

13 . The nebulizer of claim 1 , wherein the analyte comprises a solvated analyte that is received by the analyte supply conduit from an analyte source.

14 . The nebulizer of claim 12 , wherein the mass analyzer comprises a quadrupole mass spectrometer.

15 . A method of generating analyte ions, the method comprising:

flowing a nebulizer gas along a gas transport conduit having a gas inlet for receiving the nebulizer gas and an outlet, the gas transport conduit defining a longitudinal axis along a flow direction of the nebulizer gas; and

flowing an analyte along an analyte supply conduit extending into the gas transport conduit along the longitudinal axis, the analyte supply conduit having at least one side aperture, wherein the analyte is emitted from the analyte supply conduit into the gas transport conduit in a direction off-axis from the longitudinal axis of the gas transport conduit.

16 . The method of claim 15 , further comprising emitting the analyte in a direction substantially perpendicular to the flow direction of the nebulizer gas.

17 . The method of claim 15 , wherein the at least one side aperture of the analyte supply conduit is upstream of the outlet of said gas transport conduit.

18 . The method of claim 15 , further comprising emitting the analyte at an acute angle with respect to a flow direction of the nebulizer gas in the gas transport conduit.

19 . The method of claim 15 , wherein the analyte supply conduit has an analyte inlet configured to receive the analyte from an analyte supply source.

20 . The method of claim 19 , wherein the analyte inlet is at a first end of the analyte supply conduit, the analyte supply conduit having a closed second end that is opposite the first end.

21 . The method of claim 20 , wherein the closed second end comprises a dome extending away from the analyte supply conduit.

22 . The method of claim 15 , wherein the at least one side aperture is configured to emit analyte from the analyte supply conduit into the gas transport conduit.

23 . The method of claim 15 , wherein the at least one side aperture comprises a coating configured to reduce liquid wetting on a surface of the analyte supply conduit.

24 . The method of claim 15 , wherein the at least one side aperture comprises at least two side apertures on opposing sides of the analyte supply conduit.

25 . The method of claim 24 , wherein the at least two side apertures comprise a first and second aperture, the first aperture being offset from the second aperture along an axis of the analyte supply conduit.

26 . The method of claim 15 , wherein the gas transport conduit comprises a nebulizer gas transport conduit, and an outer gas transport conduit configured so that the nebulizer gas transport conduit extends into the outer gas transport conduit, the method further comprising delivering a gas to a mass analyzer via an outlet of the outer gas transport conduit.

27 . The method of claim 15 , wherein the analyte comprises a solvated analyte that is received by the analyte supply conduit from an analyte source.

28 . The method of claim 26 , wherein the mass analyzer comprises a quadrupole mass spectrometer.