Analysis of substance mixtures
The invention relates to a method for substance mixtures, particularly complex chemical and/or biochemical substance mixtures. According to said method, a substance mixture that is to be analyzed is fed to a separating device, the substances of the substance mixture that is to be analyzed are separated from each other in the separating device by means of a chemically and/or physically induced conveying process, and the separated substances are detected in an evaluation unit. The invention further relates to methods and devices for producing pulsed substance mixtures, particularly complex chemical and/or biochemical substance mixtures. In order to improve the analysis of substance mixtures especially regarding the duration of the analysis, the throughput, and the resolution, the substance mixture that is to be analyzed is fed to the separating device in pulses having an unique binary sequence.
1. A method for analyzing a plurality of substance mixtures, comprising feeding said plurality of substance mixtures to be analyzed to a separating device, separating the substances of the substance mixture to be analyzed from one another by the separating device by chemically and/or physically effected transport, and detecting the separated substances by an evaluation device, wherein said feeding comprises feeding each substance mixture to be analyzed to the separating device in pulses of a unique binary sequence; and wherein each substance mixture to be analyzed is injected multiple times in sequence during analysis in order to identify and quantify individual analytes in each substance mixture.
2. The method as claimed in claim 1 , which further comprises feeding the pulses of the substance mixtures to be analyzed to the separating device in a fashion temporally and spatially separated from one another.
3. The method as claimed in claim 1 , wherein the unique binary sequence is produced by a binary random number generator.
4. The method as claimed in claim 1 , wherein the unique binary sequence is formed from a sequence that is subdivided by a repeating sequence and generated with a binary random number generator.
5. The method as claimed in claim 1 , wherein the unique binary sequence consists of 2 n elements, with 0≦n≦∞.
6. The method as claimed in claim 1 , wherein the pulses are at a modulation interval (Δt) in a range from approximately 0.25 s to approximately 120 ss.
7. The method as claimed claim 1 , wherein the pulses are at a pulse duration (Δt pulse ) in a range from approximately 1 ms to approximately 1 s.
8. The method as claimed in claim 1 , wherein said detecting is performed by the evaluation device in a fashion synchronized with a substance mixture feed.
9. The method as claimed in claim 8 , wherein the substances detected by the evaluation device are deconvoluted mathematically with the unique binary sequence of the pulses of the substance mixture to be analyzed.
10. The method as claimed in claim 9 , wherein, in the course of the deconvolution, the substances detected by the evaluation device are subjected to a Hadamard transformation with the unique binary sequence, concentration distributions of the substances detected by the evaluation device are determined from the result of the Hadamard transformation, and concentrations of the individual substances detected by the evaluation device are determined.
11. The method as claimed in claim 1 , wherein the evaluation device is operated with a detection period that corresponds to a modulation interval (pulse interval duration Δt) or to an integral fraction of the modulation interval (pulse interval duration Δt).
12. The method as claimed in claim 1 , wherein the separating device uses chromatographic and/or electrophoretic separating methods.
13. The method as claimed in claim 1 , wherein the evaluation device comprises at least one detector.