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Techniques
Butterworth Laboratories have a wide range of instrumental and classical techniques available:
Resources:
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Chromatography
Fitted with a variety of detectors, the laboratories essentially
have three instrument techniques available, all of which are
useful for both qualitative and quantitative analysis. These
are: |
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| • Gas Chromatography (GC) with the following detectors: |
MS - Mass Spectrometry
FID - Flame Ionisation
ECD - Electron Capture
TCD - Thermal Conductivity
NPD - Nitrogen, Phosphorus |
| Widely used, almost entirely for organic materials,
the technique is rapid, simple and can cope with very
complex mixtures (100 or more components) and very small
samples (nanograms). In addition to the various detectors,
the laboratory has a number of automated headspace samplers,
and a heated gas injection valve. |
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• Liquid Chromatography (HPLC) with the following detectors: |
UV (inc. Diode Array)
Fluorescence
RI (Refractive Index)
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| • Ion Chromatography (IC) with the following detectors: |
Conductivity
PAD (Pulsed Amperometric)
UV
RI (Refractive Index) |
Both these techniques are widely used for organic
and inorganic materials. They are especially useful
for checks on purity, to monitor reactions and production
processes and to characterise complex materials.
In addition classical techniques available include:
• Thin Layer Chromatography (TLC)
and Paper Chromatography
Used mainly for qualitative purposes, almost any mixture
can be at least partially resolved by one of these techniques.
It is ideally suited to quality control, purity checks,
clinical diagnosis and forensic tests.
• Column Chromatography
Less commonly used than the other techniques as a stand-alone
technique. |
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