Automated gas chromatographic apparatus is utilized to analyze various gases dissolved in the insulating oil of an oil-filled power transformer in an expeditious and reliable manner. A sample of the insulating oil is introduced into a sample loop (24) via a sampling valve (22), from which it ...
Gas chromatography (GC) is an analytical technique used to separate and analyze samples that can be vaporized withoutthermal decomposition. Sometimes gas chromatography is known as gas-liquid partition chromatography (GLPC) or vapor-phase chromatography (VPC). Technically, GPLC is the most correct te...
If it is impractical to analyze the entire device, then representative parts of the device can be utilized. This often involves cutting or machining parts of each of the materials that are used to make up the device. Collecting the materials from a finished device is generally preferred as ...
The initial sample may be a solid, liquid, or gas. The sample is vaporized into agasand then ionized by the ion source, usually by losing an electron to become a cation. Even species that normally form anions or don't usually form ions are converted to cations (e.g., halogens like c...
Next, package your hair sample as directed and send it to the designated lab. Most kits come with a prepaid envelope or shipping container for this purpose. Once the lab receives your sample, they will analyze it for the presence of drugs and toxins. ...
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Automated gas chromatographic apparatus is utilized to analyze various gases dissolved in the insulating oil of an oil-filled power transformer in an expeditious and reliable manner. A sample of the insulating oil is introduced into a sample loop (24) via a sampling valve (22), from which it ...
Secondary electrospray ionization coupled to high-resolution mass spectrometry (SESI-MS) has also been used to analyze the VOCs produced during fermentation by the ale yeast Saccharomyces cerevisiae [106]. An exquisite advantage of the PTR-MS, SIFT-MS and SESI-MS online approaches is their ...
After transportation to the laboratory of Qinghai University, texture, water holding capacity (WHC), pH and color of the fillets were tested immediately. Then, the fillets were divided into several segments and stored at −80 °C to analyze the other quality indicators. Specific segments or ...
A sample of 2 mL was obtained from each breast milk batch for macronutrient analysis. One milliliter was subsequently used to analyze protein and fat using a near-infrared milk analyzer (SpectraStar, Unity Scientific, Brookfield, CT, USA). Results were adjusted according to our detailed validation...