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LMS Issue 4 | 2014
Thermal Analysis
Hyphenated Solutions
P
erk i n E l mer h a s
been pioneering
hyphenated solutions
through a comprehensive range of thermal,
spectroscopy and
gas chromatog raphy
solutions.
Evolved Gas Analysis (EGA) involves
u nd e r s t a nd i n g ho w
materials respond to
non-standard test environments, how they degrade or what
gases evolve when these materials
burn. PerkinElmer’s thermogravimetric
instruments can be coupled to Fourier
Transform-Infra red spectroscopy
(F T-IR), mass spectrometry (MS),
or gas chromatography (GC)/MS to
help advance the power of analysis in
laboratories.
The combination of a thermogravimetric analyser (TGA) with an IR
is the most common type of EGA in
use today. A sample, which has been
heated on the TGA, will release volatile materials or generate combustion
components as it burns.
These gases are then transferred to
the IR cell, where the components can
be identified. IR analysis allows greater
understanding of the processes seen in
the TGA because of its ability to detect
functional groups.
The PerkinElmer TL 8000 transfer
line is a state-of-the-art system designed
to make sure every component evolved
in the TGA is transported to the IR.
Combining a TGA with a MS will
allow the detection of very low levels of
impurities. By heating a sample on the
TGA, it will release volatile materials
or combustion components as it burns.
These gases are then transferred to the
MS for identification.
Although TG-MS allows real time
monitoring, it can be confusing due to
overlapping events and higher mass
ions obscuring those of lower mass. By
adding GC to the system, these events
can be cleanly separated and very low
levels of impurities detected. ⚛
PerkinElmer
Contact: Chris de Jager
Tel: 011-564-2400
Email: info.za@perkinelmer.co