Abstract:
La présente invention concerne un procédé de constitution d'une collection de chromatogrammes d'un mélange de référence de composés organiques. La présente invention concerne également un procédé d'identification de composés d'un échantillon d'un mélange organique mettant en œuvre une collection de chromatogrammes. La présente invention concerne par ailleurs un kit pour identifier au moins un composé d'un échantillon d'un mélange organique. L'invention appartient au domaine de la chimie analytique.
Abstract:
Exemplary embodiments of the present disclosure are directed to manipulating pressure-related hysteresis in a pressurized flow system by setting the pressure of the system to a predetermined location in the hysteresis band to advantageously minimize an effect of the pressure related hysteresis on the pressure of the system or to advantageously benefit from the effects of the hysteresis on the pressure of the system.
Abstract:
The present invention features computer methods and systems for comparing biomolecules across biological samples. In these methods, mass spectrometry measurements are obtained on biomolecules in two or more samples. These measurements are then processed and analyzed by the methods described herein to render them more comparable. We refer to this technology as “Constellation Mapping” (CM). The resulting data, constellation maps, can be used to compare the abundance of biomolecules across samples, and, when done in real time, can be used to select differentially abundant biomolecules for subsequent LC/MS-MS.
Abstract:
Techniques for performing data acquisition and analysis are described. A multi-mode acquisition strategy may be performed which iteratively selects mass isolation windows of different sizes in different scan cycles to acquire experimental data. The mass isolation windows selected may provide for acquiring elevated energy scan data for a defined set of m/z values. Single scan data analysis may be performed. Data analysis may include forming precursor charge clusters, chaining precursor charge clusters having the same mass to charge ratio to form peaks profiles, and using criteria to align precursor and product ions of the experimental data. Unsupervised and supervised clustering may be performed using a database and composite ion spectra formed from experimental data. Also described are a small molecule acquisition enhancement and additional techniques applicable for biopharmaceutical and other applications.
Abstract:
본 발명은 실시간 SPME-GC 또는 SPME-GC/MS 분석시스템을 이용한 유기오염물질의 실시간 자동분석 방법에 관한 것으로, 실시간 SPME-GC 또는 SPME-GC/MS 분석시스템에 형성되어 있는 시료공급라인을 통해 시료를 연속적, 실시간으로 시료병의 수납부에 공급하는 시료 공급단계와, 시료 분석단계로 이루어져, 실시간, 연속적으로 시료를 공급하여 고농도의 유기오염물질 발생시점을 정확하고 신속하게 파악하여 후속조치를 취할 수 있는 실시간 SPME-GC 또는 SPME-GC/MS 분석시스템을 이용한 유기오염물질의 실시간 자동분석 방법을 제공한다.
Abstract:
There is provided a computer assisted method for obtaining a pollution type model for hydrocarbon pollutions of soil, and to use such a pollution type model to determine the pollution type apportionment of a soil sample. There is also provided a computer assisted method for obtaining a corrected GC-FID chromatogram of a soil sample comprising one or more hydrogen compounds, wherein the correction of the chromatogram includes an adjustment of the chromatogram for retention time related changes in the sensitivity of the GC-FID system, and wherein the adjustment may be performed by use of a produced data set. Furthermore, there is provided a computer assisted method for producing a data set for adjusting GC-FID (gas-chromatography/flame ionization detector) chromatograms for retention time related changes in the sensitivity of the GC-FID system. In addition, there is provided a computer assisted method for producing a number of calibration curves to be used in determining total hydrocarbon concentrations of soil samples from GC-FID chromatograms, and there is provided a computer assisted method for determining the total hydrocarbon concentrations by use of GC-FID chromatograms and the produced calibration curves.