HPLC
High-performance liquid chromatography (or high-pressure liquid chromatography, HPLC) is a chromatographic technique that can separate a mixture of compounds and is used in biochemistry and analytical chemistry to identify, quantify and purify the individual components of the mixture.
HPLC
typically utilizes different types of stationary phases, a pump that
moves the mobile phase(s) and analyte through the column, and a
detector to provide a characteristic retention time for the analyte.
The detector may also provide additional information related to the
analyte, (i.e. UV/Vis
spectroscopic data for analyte if so equipped). Analyte retention
time varies depending on the strength of its interactions with the
stationary phase, the ratio/composition of solvent(s) used, and the
flow rate of the mobile phase. It is a form of liquid chromatography
that utilizes smaller column size, smaller media inside the column,
and higher mobile phase pressures.
With
HPLC, a pump (rather than gravity) provides the higher pressure
required to move the mobile phase and analyte through the densely packed
column. The increased density arises from smaller particle sizes.
This allows for a better separation on columns of shorter length when
compared to ordinary column chromatography.
HPLC troubleshooting guides:
http://www.chem.agilent.com/Library/slidepresentation/Public/Tips_and_Tricks_HPLC_Troubleshooting.pdf
http://www.forumsci.co.il/HPLC/3troubleshooting_handouts.pdf
http://www.lcresources.com/resources/TSWiz/
http://www.waters.com/webassets/cms/library/docs/wa20769.pdf
HPLC troubleshooting guides:
http://www.chem.agilent.com/Library/slidepresentation/Public/Tips_and_Tricks_HPLC_Troubleshooting.pdf
http://www.forumsci.co.il/HPLC/3troubleshooting_handouts.pdf
http://www.lcresources.com/resources/TSWiz/
http://www.waters.com/webassets/cms/library/docs/wa20769.pdf
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