Operation
multi EA 5000
38
¡
Begin the analysis with a standard solution and determine the daily factor. If the
value measured for the standard solution differs by more than 20 % from the target
value, repeat the measurement. If required, look for the source of the fault. If re-
quired, re-calibrate the analysis system.
¡
For examining very low element contents, examining a blind value is recommended
before the daily factor. The blind value measurement cleans the analysis system.
6.2
Selecting the measurement method
Select the proper measurement method for each sample with the following table.
Some parameters can only be analyzed with horizontally or vertically installed furnaces
¡
Horizontal: AOX, EC/OC
¡
Vertical: TOC, TIC, NPOC (in water)
For other samples, the recommended measurement method depends on the nature of
the sample.
Sample
Furnace installation po-
sition and sampling
Comment
TS, TN, TX, TC in:
Organic solids, e.g., wax,
polymer
Horizontal for
ABD
ABD with MMS
ABD with flame sensor
For trace analysis:
Use 1 quartz glass boat
for all samples
MMS with temperature-
control unit in heating
mode for high-viscosity
liquids
ABD without MMS for
non-homogeneous sam-
ples
High-viscosity organic liq-
uids, gels and paste-like
samples, e.g., crude oil, as-
phalt, bitumen, tar
Bio-Diesel
Oils such as crude oil, paraf-
fin oil and vegetable oil
Volatile liquids such as pe-
troleum ether, methanol,
naphtha
Liquids or solids with high
element content
(> 100 mg/l)
Organic liquids with normal
viscosity, such as fuels, sol-
vents
Horizontal for
Autoinjector
ABD
ABD with MMS 5000
ABD with flame sensor
Vertical for
Autoinjector and
Autoinjector AI-EA
MMS
For trace analysis: must
be vertical
EOX
Horizontal for
ABD
ABD with MMS
ABD with flame sensor
Sample (colorless, col-
ored) in n-hexane or pe-
troleum ether
Vertical for
MMS
Autoinjector
Only colorless samples in
n-hexane