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Oct 10, 2016 · Phenomenex Chirex® 3126 (D)-penicillin column, 5 μm 250 × 4.6 mm (Santa Clara, USA)) and Sigma-Aldrich Astec® CHIROBIOTIC™ T Chiral column, 5 μm 250 × 4.6 mm (St Louis, USA) were used to confirm the enantiomeric of [18 F]F-Gln. Residual solvent analysis was performed using an Aijiren gas chromatography (GC) system, or series.
Sep 13, 2019 · Then, a solution of 2 mmol of amine and 1 mmol of anisole as GC internal standard was added to the mixture. The obtained liquid was monophasic. The vials were capped with aluminium crimp seals with PTFE septa and placed each in a different position in the 48‐well parallel reaction block.
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Jun 10, 2019 · The pH of PM 2.5 extracts was adjusted to 7.4 as a physiological pH in 10 mL crimp neck headspace vials. PDMS-coated stir bars were preconditioned with acetonitrile overnight, washed with ultrapure water, and then immersed in 2 mL of PM 2.5 pooled extracts spiked with three model standards (atrazine, propazine and prometryn, 5 ng/mL).
Dec 23, 2012 · The stock Gibbs reagent was prepared by dissolving 0.25 g of 2,6‐dichloroquinone‐4‐chloroimide (Sigma‐Aldrich, St. Louis, MO) in 30 mL of absolute alcohol (Spectrum, Gardena, CA). The stock solution is stable for several months if kept in a cold and dark environment (Svobodova et al. 1978 ).
A dwell time of 0.08 s and an inter- ized water, were dried by vacuum centrifuge, transferred channel delay of 0.02 s were used. Each mass window to a crimp-capped 2 ml G C derivatization vial had a span of kO.1 u. Isotope ratios were calculated (Chromacol, Welwyn Garden City, UK) and dried.
Nov 17, 2012 · Shikimic acid (4TMS) 26.25 204 supernatant was transferred to GC-vials with micro inserts 30. Carbohydrate 26.30 217 and closed with crimp caps. 31. Citric acid (4TMS) 26.43 273 GC-MS analyses were performed on a ThermoFisher 32. Carbohydrate (5TMS) 26.50 204 Trace gas chromatograph coupled to a Triple Quadrupole 33.
Jun 10, 2020 · Furthermore, the acquisition of data by multiple “omics” modalities from the same animal allows for integration of multiomics datasets in the future when more powerful bioinformatic tools are developed. 3 MATERIALS 3.1 Reagents 3.1.1 Proteomics. Ammonium acetate (Sigma‐Aldrich, cat. no. 73594)
Single-vial biotransformation assay. The protein concentration of the soluble protein fraction was diluted to 300 mg/L in a final volume of 1 mL extraction buffer, which was previously supplemented with 15 µM (final concentration) GPP lithium salt (Sigma-Aldrich, St. Louis, MO, USA), in a 22-mL Crimp Top vial (PerkinElmer, Waltham, MA, USA).
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Dec 15, 2020 · In order to make gas production directly visible at the cathode, it was placed inside a glass micro vial (2 mL crimp neck vial, ND11, VWR, GER). To one set of reactors a voltage of 0.8 V was applied in parallel mode. The specific voltage was chosen due to prior experiments . The other set (0 V) was also equipped with electrodes, but the wires
Nov 17, 2012 · Shikimic acid (4TMS) 26.25 204 supernatant was transferred to GC-vials with micro inserts 30. Carbohydrate 26.30 217 and closed with crimp caps. 31. Citric acid (4TMS) 26.43 273 GC-MS analyses were performed on a ThermoFisher 32. Carbohydrate (5TMS) 26.50 204 Trace gas chromatograph coupled to a Triple Quadrupole 33.
The ether layer was pipetted into a crimp neck vial (1.5 mL) and evaporated with nitrogen gas (N 2) to about 50 µL, before injection in the gas chromatograph combustion isotope ratio mass spectrometer (GC-C-IRMS) (Delta plus-XP, Thermo Fisher, Bremen, Germany), equipped with a trace gas chromatograph (Interscience, Breda, The Netherlands) and
Search results for gc septum at Sigma-Aldrich. ADVANCED SEARCH pkg of 100 ea, for use with 2mL-2.5mL standard opening crimp top vials; Supelco ... fits neck I.D ...