Bioethanol is either used in pure form as a fuel
or mixed with fossil fuels. Contamination in the form
of inorganic salts affects both the functioning and
the working life of the motor. Against this background
the ethanol specification ASTM
D 4806 limits the sulfate content to 4 ppm and chloride
to 40 ppm.
Chloride and sulfate are separated on an anion exchange
column and then determined quantitatively by conductivity
detection.
Ion Chromatography by Metrohm
The recommended setup is an 861 Advanced IC
with the Metrohm CO2 Suppressor
«MCS». The analysis can be completely automated
by using an 838 Advanced IC Filtration Sample
Processor, which allows inline ultrafiltration
of the samples.
Product information
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Biofuel
Analysis 
