Endress+Hauser Analytik Jena multi EA 4000, Руководство по эксплуатации

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multi EA 4000 Measuring methods
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4 Measuring methods
The analyzer multi EA 4000 is used to determine the following parameters as sum pa-
rameters.

TS – Total Sulfur

TC – Total Carbon

TCl – Total Chlorine

TOC – Total Organic Carbon

TIC – Total Inorganic Carbon

EC – Elemental Carbon

TC-EC – Determination of carbon after pyrolysis

AOC – Degradable organic carbon
In the control and analysis software multiWin the detection of several parameters can
be combined.
4.1 TC/TS analysis
The multi EA 4000 with C/S module is a special system for the simultaneous or indi-
vidual determination of the total carbon and total sulfur in solid and paste-like sam-
ples using high temperature oxidation in an oxygen flow.
A sample aliquot is weight precisely in a combustion boat and transferred completely
into the hot zone of the furnace. There the sample is digested and oxidized in the oxy-
gen flow at high temperature.
R + O
2

CO
2
+ H
2
O (1)
R-S + O
2

SO
2
+ CO
2
+ H
2
O (2)
R carbonic substance
The resulting measuring gas is dried and the halide it contains removed. The CO
2
/SO
2
content in the carrier gas is analyzed with the NDIR detectors which are selective for
CO
2
and SO
2
.
4.2 TIC analysis
During TIC analysis, the total inorganic carbon from carbonates and hydrogen car-
bonates in solid and powder samples is detected. Cyanides, cyanates, isocyanates and
carbon particles are not detected.