Conversely, totally dissolved samples for liquid-state NMR spectroscopy contain molecules that tumble isotropically, thus fully minimizing the anisotropicity of solid matter and enabling acquisition of high-resolution NMR spectra.
When researchers use such pre-enriched samples as their starting sample for liquid chromatography/mass spectrometry (LC/MS), they "can get much, much deeper into these samples," says Carr. "It's very common now to get 20,000 30,000 phosphorylation sites identified, which is really quite deep".
Glycerol hydrogenolysis reactions were performed in a 250 ml stainless steel autoclave equipped with a stirrer, an electric temperature controller and a sample port for liquid samples.
During this procedure, a cervical sample for liquid-based cytology and Hybrid Capture (HC) HPV test QIAGEN AG Garstligweg 8 CH-8634 Hombrechtikon, Switzerland) was obtained using a broom type cervical brush and rinsing it in Preservcyt™ buffer solution (Hologic, Inc Bedford, Massachusetts, U.S).
The new transmission mode desorption electrospray ionization (TM-DESI) technique is not applicable to bulk materials, but instead is a method designed to simplify the sample preparation process for liquid samples and sample extracts.
Miniaturized sample preparation methods designed as the sample pretreatment for liquid phase separations, such as liquid chromatography, capillary electrophoresis and capillary electrochromatography, have been reviewed especially for the on-line coupling of the sample preparation process and the separation process.
To obtain samples for SEM, liquid nitrogen was used to cryogenically freeze them for 5 min.
Sample preparation for liquid ICPMS analysis was done using laboratory water type 1 and nitric acid of reagent grade (EMSURE ISO, Merck, Darmstadt, Germany) which were further purified in-house by using a sub-boiling distillation system (Milestone Inc., Shelton, CT, USA).
Furthermore, it has to be stressed that FI-ICP-MS is limited by the fact that it can only provide information about the total element concentration in a sample, which is, as a matter of fact, identically with the information provided by conventional ICP-MS analysis utilizing standard sample introduction systems for liquid or solid samples.
All brain samples, together with CSF and 100 μl artificial plasma samples, were prepared for liquid scintillation counting as described below.
