Chemistry Reference
In-Depth Information
carrier stream. Reactions take place on the overlapped sections of the zones in
a practically single-channelled configuration.
Sequential Injection Chromatography: This new term was introduced in the
mid-2000 in order to describe the incorporation of short monolithic stationary
phases for liquid chromatography to SI systems. The new technique is a hybrid
between SI and HPLC and combines the automation potentials of SI (on-line
derivatization, extraction, dilution etc) and the separation efficiency of liquid
chromatography.
Solid Phase Spectrophotometry: The concept of solid phase spectrophotometry
(or solid phase spectroscopy) was introduced in mid-1970 as an alternative
approach for increasing the sensitivity and selectivity of classical solution-
based UV-Vis methods. Measurement of the analyte(s) of interest - either
directly or after a suitable reaction - is carried out after absorption on a
suitable solid support that is located in the flow-cell of a UV-Vis detector.
Supported Liquid Membranes: An alternative approach for performing liquid-
liquid extraction under flow conditions. The extractant, typically a non-
miscible organic solvent, instead of flowing continuously is immobilized within
the pores of a suitable hydrophobic membrane (e.g. made of PTFE). The
analytes of interest are extracted upon contact with the membrane from an
aqueous donor stream (sample) through the immobilized solvent to a suitable
acceptor solution that undergoes detection.
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List of Abbreviations
ATR
Attenuated Total Reflection
CE
Capillary Electrophoresis
CL
Chemiluminescence
FI
Flow Injection Analysis
FL
Fluorescence
FT-IR
Fourier Transform Infrared
GC
Gas Chromatography
HPLC
High Performance Liquid Chromatography
IR
Infrared Spectroscopy
LOD
Limit of Detection
MeOH
Methanol
MIP
Molecularly Imprinted Polymer
PTFE
Polytetrafluoroethylene (Teflon)
PVPP
Polyvinylpolypyrrolidone
SFA
Segmented Flow Analysis
SI
Sequential Injection Analysis
SIC
Sequential Injection Chromatography
SLM
Supported Liquid Membrane
SPE
Solid Phase Extraction
UV-Vis
Ultraviolet - Visible spectrophotometry
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