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Analytical
Capabilities
High performance liquid chromatography
The HPLC laboratory is equipped with a wide range
of analytical and preparative instruments. These
instruments are fitted with the following detectors:
Ultra violet, refractive index, electrochemical
and fluorescence detectors. Most analytical HPLC
columns are available, enabling us to provide
you with a vast range of analyses.
Atomic absorption spectrophotometer
The atomic absorption spectrophotometers are
employed for metals analysis in the microgram
range with flame techniques.
Gas Chromatography
Our gas chromatographs are fitted with flame
ionization, electron capture, nitrogen/phoshorus,
photo ionization, flame photometric and mass selective
detectors. A wide variety of injection techniques
are also available. These include split, splitless,
direct cool on column, pyrolysis, purge and trap
with thermal desorption and automated headspace
sampler and gas sampling loops.
Flow Injection Analysis
Currently used for ammonia analysis in a wide
range of matrices. The detector employed is UV-Visible.
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Ion chromatography/Capillary electrophoresis
We can provide screens for anions (as well as
analysis) in a wide range of matrices by ion chromatography.
Detectors employed are conductivity, ultraviolet
and electrochemical. Cation and anion analysis
can be carried out using capillary electrophoresis.
Mass Spectrometry
High resolution capillary gas chromatography-mass
spectrometry for identification and quantitation
of organic compounds in air, water, wastewater,
soil, sludges and biota. With computerised data
handling and library search capabilities our GC-MS
system can search the National Bureau of standards
mass spectral library containing over 120,000
compounds. Our GC-MS techniques allow detection
of pollutants such as PCB’s and pesticides at
ppb-ppt range.
Low resolution electron impact mass spectra
are obtained fro appropriate samples using the
direct insertion technique. Chemical ionization
(CI) is also available.
Infrared spectroscopy
Both conventional and FTIR units are used in
aid in identifying unknowns and quantifying certain
species. We have a wide range of accessories for
the IR instruments including micro reflectance,
micro transmittance, attenuated total reflectance
for solids and liquid, beam condensers, gas cells,
LC-IR cell and detector, and the sadtler digitized
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Range of Services
The skills of our professional scientists and
the capabilities of our modern analytical instrumentation
are directed to providing a rapid turnaround,
accurate research and professional advice service,
operating under a rigorous quality control/quality
assurance protocol.
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Analyses of Stack Emissions and Atmospheric
Discharges
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Trace analyses in full compliance with USEPA
protocols
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BTEX, TPH by GC-FID and IR, metals and OC
screens
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Chlorinated dioxins and furans (PCDD/PCDF),
including 2,3,7,8 substituted isomers and
full tetra through to octa profiles in soil,
sediments, sewage, sludges, ash, water, and
air samples.
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Toxicological testing of a variety of liquid
and solid wastes to EPA requirements.
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Characterisation of hydrocarbons including
PAH's, MAH and aliphatics in water, supsended
particulate matter, marine biota, marine sediments.
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Pesticide residue analysis in foodstuffs
and agricultural products including organochlorine,
organophosphorus, and organonitrogen pesticides.
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Isomer specific, and "chlorination level",
PCB analysis by GC-MS and GC-ECD.
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Chlorinated phenolics (all isomers) in marine
biota, sediments, soils, waters, foods etc.
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PAH's in the workplace environment, ambient
air, coal products, petrolium products, effluents
(gaseous and liquid).
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Chlorinated phenoxy acid herbicides in all
matrices.
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Collection of high volume air samples for
ambient air monitoring and subsequent analysis
of PCDD/PCDF, PAH, Organochlorines etc.
- Unknowns identifiecation and general investigative
analytical work by GC-MS, NMR, FTIR, UV/VIS
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