By What does BPG column stand for?
BPG™ columns are glass chromatography columns designed for industrial applications which demand high standards of hygiene. Hygienic design and operation. Microbial attachment and growth is hindered through the use of calibrated precision glass, high grade electropolished stainless steel and an absence of dead pockets.
What are GC columns made of?
They are constructed of stainless steel, borosilicate glass and, as stated previously, fused silica. Just as in packed column GC, there are different types of capillary columns.
What is Bpg respiratory system?
2,3-Bisphosphoglycerate (BPG), also known as 2,3-Disphosphoglycerate (2,3-DPG), promotes hemoglobin transition from a high-oxygen-affinity state to a low-oxygen-affinity state.
Why are GC columns long?
Due to the small pressure drop associated with open tube capillary columns, long columns of up to 60 m can easily be used. However, packed columns are tightly filled with solid support and suffer from greater pressure drops; thus, it is impossible to use packed columns much longer than 2 m [1].
What is WCOT column?
Wall-coated open-tubular (WCOT): thin liquid film of stationary phase is coated on capillary wall. WCOT columns have lower capacity, but higher separation efficiency, than SCOT ones. To add strength, an outside polyimide coating is applied to the external capillary wall as the capillary tubing is being drawn.
How does hemoglobin affect oxygen saturation?
The blood hemoglobin concentration is determinant of oxygen delivery. In anemic patients, oxygen delivery decreases and oxygen extraction is increased. This leads to decreased venous hemoglobin saturation and a lower tissue oxygen saturation.
Is BPG in the lungs?
2,3-BPG is present in human red blood cells (RBC; erythrocyte) at approximately 5 mmol/L. It binds with greater affinity to deoxygenated hemoglobin (e.g. when the red cell is near respiring tissue) than it does to oxygenated hemoglobin (e.g. in the lungs).
Why are open tubular columns more common in GC compared to packed columns?
A gas chromatography capillary column is a popular type which comes with its stationary phase being coated on its inner surface. These columns are mostly preferred over the packed variants because they require smaller amounts of sample for the chromatography process.
Which detector is not used in GC?
Explanation: UV visible spectrometric detector is not used in gas chromatography.
What is Scot and WCOT column?
Capillary columns are basically of two type wall-coated open tubular (WCOT) and support-coated open tubular (SCOT). WCOT columns consist of a capillary tube, where the walls of the tube are coated with liquid stationary phase.
Which column is used in GC?
Two types of columns are used in gas chromatography: packed columns and capillary columns. Short, thick columns made of glass or stainless steel tubes, packed columns have been used since the early stages of gas chromatography.