Method for providing a substance for the analysis of isotope ratios
A method and an apparatus for providing a substance for the analysis of isotope ratios, at least some of the substance being contained in a liquid phase in which the liquid phase is subjected to electrolysis and, in the process, the substance or a pre-product for the latter is formed.
1. A method for carrying out an analysis of isotope ratios of N from organic or other compounds, comprising the steps of:
a) preparing a liquid phase ( 29 ) containing N in organic or other compounds by a liquid chromatography method, wherein the liquid phase is an eluate from the liquid chromatography method;
b) subjecting the liquid phase ( 29 ) to electrolysis, and forming gas from the liquid phase;
c) separating the gas from the remaining liquid phase ( 29 ); and
d) analyzing the gas and determining the isotope ratio of N.
2. The method according to claim 1 , wherein in the process of electrolysis the gas is formed as a dissolved or undissolved gas and is separated from the liquid phase ( 29 ) remaining in the process.
3. The method according to claim 2 , wherein the gas formed is carried along with a carrier gas stream.
4. The method according to claim 2 , wherein the gas formed is separated physically from the remaining liquid phase ( 29 ) at a membrane.
5. The method according to claim 1 , wherein the electrolysis is carried out on a flowing liquid phase ( 29 ) in a continuous process.
6. The method according to claim 1 , wherein the electrolysis is carried out on a stationary liquid phase as a batch operation.
7. The method according to claim 1 , wherein additives ( 16 , 18 ) are supplied to the liquid phase ( 29 ) before or during the electrolysis in order to improve or trigger the electrolysis reaction.
8. The method according to claim 1 , wherein additives ( 16 , 18 ) are supplied to the liquid phase ( 29 ) before, during or after the electrolysis in order to generate the gas.
9. The method according to claim 1 , wherein the gas is formed during the electrolysis by means of a combination of oxidation and reduction.
10. The method according to claim 1 , wherein the gas formed comprises water vapor.
11. The method according to claim 10 , wherein the water vapor is separated from the gas prior to the analysis of isotope ratio.
12. The method according to claim 1 , wherein a polarity of the electrolysis is changed at a cycle rate.
13. A method for carrying out an analysis of isotope ratios of N from organic or other compounds, comprising the steps of:
a) preparing a liquid phase ( 29 ) containing N in organic or other compounds by a liquid chromatography method, wherein the liquid phase ( 29 ) is an eluate from the liquid chromatography method;
b) subjecting the liquid phase ( 29 ) to electrolysis by means of a combination of oxidation and reduction, wherein the electrolysis is carried out on the liquid phase ( 29 ) that is flowing in a continuous process, whereby, in the continuous process, a dissolved or undissolved gas is formed;
c) separating the gas from the liquid phase ( 29 ) remaining in the continuous process; and
d) analyzing the gas and determining the analysis of isotope ratio of N.
14. The method according to claim 13 , wherein the gas formed is carried along with a carrier gas stream.
15. The method according to claim 13 , wherein the gas formed is separated physically from the remaining liquid phase ( 29 ) at a membrane.
16. The method according to claim 13 , wherein additives ( 16 , 18 ) are supplied to the liquid phase ( 29 ) before or during the electrolysis in order to improve or trigger the electrolysis reaction.
17. The method according to claim 13 , wherein additives ( 16 , 18 ) are supplied to the liquid phase ( 29 ) before, during or after the electrolysis in order to generate the gas which contains the substance or the pre product.
18. The method according to claim 13 , wherein the gas formed comprises water vapor.
19. The method according to claim 18 , wherein the water vapor is separated from the gas prior to the analysis of isotope ratio.
20. The method according to claim 13 , wherein a polarity of the electrolysis is changed at a cycle rate.
21. A method for carrying out an analysis of isotope ratios of N from organic or other compounds, comprising the steps of:
a) preparing a liquid phase ( 29 ) containing N in organic or other compounds by a liquid chromatography method, wherein the liquid phase ( 29 ) is an eluate from a liquid chromatography method;
b) subjecting the liquid phase ( 29 ) to electrolysis by means of a combination of oxidation and reduction, wherein the electrolysis is carried out on the liquid phase, which is stationary in a batch operation process, whereby, in the batch operation process, a dissolved or undissolved gas is formed;
c) separating the gas from the liquid phase ( 29 ) remaining in the batch operation process; and
d) analyzing the gas and determining the isotope ratio of N.
22. The method according to claim 21 , wherein the gas formed is carried along with a carrier gas stream.
23. The method according to claim 21 , wherein the gas formed is separated physically from the remaining liquid phase ( 29 ) at a membrane.
24. The method according to claim 21 , wherein additives ( 16 , 18 ) are supplied to the liquid phase ( 29 ) before or during the electrolysis in order to improve or trigger the electrolysis reaction.
25. The method according to claim 21 , wherein additives ( 16 , 18 ) are supplied to the liquid phase ( 29 ) before, during or after the electrolysis in order to generate the gas.
26. The method according to claim 21 , wherein the gas formed comprises water vapor.
27. The method according to claim 26 , wherein the water vapor is separated from the gas prior to the analysis of isotope ratio.
28. The method according to claim 21 , wherein a polarity of the electrolysis is changed at a cycle rate.