Analytical instrumentation
Determination of Halogens by Combustion Ion Chromatography
Aug 11 2009
Metrohm has released a fully automated combustion ion chromatography (CIC) system. The new instrument combines a highly efficient combustion system with the separation power of ion chromatography. CIC is capable of simultaneously determining trace halogens (F, Cl, Br and I) and sulphur compounds (as sulfate) in any non-aqueous sample matrix.
RoHS legislation around the world calls for suitable technology for the rapid monitoring of organohalogen compounds in matrices such as coal, crude oil, naphtha, liquefied petroleum gas, etc. However, the samples are often difficult to bring into solution and thus require complex and time-consuming sample preparation procedures. Metrohm’s Combustion IC system is the answer.
After an upstream thermal oxidative digestion, which takes place in the combustion system, the liberated gases are trapped in an oxidising aqueous absorbent. This is then directly injected into the sample loop of a Metrohm 881 Compact IC pro. The MagIC Net software reliably controls the analysis and automatically calculates the sulphur and mass fraction for each sample.
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