For the analysis of mineral oils, respectively petrochemical products, the accurate quantitative determination
of the elements C, H, N, S and O as major and minor components is important as well as N and S
analysis in trace concentrations. For each case a high degree in accuracy, precision and long time
stability is required.This is especially the case in the lowest concentration range due to the high costs
as a result of faulty analysis.
Elementar Analysensysteme as a successor of Heraeus Analysentechnik has over 100 years experience
in the development of analyzers for organic elemental analysis. The vario EL and vario TRACE liquid
injection line of analyzers have been specifically developed and optimized for mineral oil product
applications.
vario EL III
for universal analysis of C, H, N, S and O
as main and side components > 0.01 with 100%
in solid and liquid (capsule sealing technique) samples
vario EL liquid injection
direct injection of liquid samples for CHNS and O analysis
vario TRACE N liquid injection
for nitrogen trace analysis
< 0.1 - 1000 ppm
vario TRACE S liquid injection
for sulfur trace analysis
< 0.1 - 1000 ppm
vario TRACE S/N liquid injection
combined instrument for S and N < 0.1 - 1000 ppm
elementar
Analysensysteme GmbH
100 years German technology
for quality and environment control
The basis matters
All elemental analyzers by ELEMENTAR for mineral oil products are based on the universal analyzer vario EL III,
setting the standards in organic elemental analysis now in the third generation. Hundreds of instruments are
in operation worldwide. vario EL III has been enhanced for the special requirements of petrochemical analysis.
Common features:
● Very high injection volume
up to 80 µl in a few seconds due to highly efficient
total combustion results in high detection sensitivity.
Injection of gas samples with up to more than 10 ml
for TRACE S and N determination.
● PC control and data processing under
Windows®
including LIMS coupling and implementation in
other data networks.
● High stability
Long time stability of the multipoint calibration.
Long stability of the analyzer allowing maintenance
free operation over night.
● Automatic septum-free sample injection for 98
samples
for best possible repeatability and saving of precious
labor time. Optional heating device for samples
with high viscosity.
● Gas separation with "purge and trap" technique
serves for large concentration range, detection
sensitivity, sample volume from micro to semimacro as well as automatic control of analysis time.
● Compact design, easy installation and handling,
cost effective operation
230/110 V, 50/60 Hz, approx. 1800 VA,
footprint 780 x 600 mm (basic unit).
● In accordance with the international standards
functional diagram
vario EL liquid injection
CHNS version
autosampler
100 µl-syringe
reference gas
PC
He
O2
adsorber
adsorber
adsorber
vario EL liquid injection
● For the accurate and precise analysis of major and minor components in the versions CHNS and CHN
and O (optional).
● Very large working range of absolute element content by means of purge-and-trap gas components
separation and detection with highly stable thermoconductivity detector (TCD).
● Measuring value processing with standardization function for automatic correction of temperature depending
density fluctuation of the injection volume.
● The determination of sample specific density is not required !
Relative standard deviation
Working range
C, H: < 0.2 % rel. (for 10 µl toluene)
S:
1-2 % rel. (for approx. 1% content)
O:
< 1 % rel.
(for 10 µl isobutanol)
C:
H:
N:
S:
O:
0.03 - 20 mg abs. (or 100 %)
0.03 - 3 mg abs. (or 100 %)
0.03 - 2 mg/ or 10 mg abs.(or 100 %)
0.03 - 6 mg abs. (or 100 %)
0.03 - 5 mg abs. (or 100 %)
The Trace Analyzers
Instruments of the vario EL TRACE line are designed without compromises for highest sensitivity and precision
for sulfur and nitrogen in hydrocarbons, gasoline or oil in order to even meet future requirements for environmental
protection in terms of lower detection limits.
Key for the high performance is the large sample injection volume of up to 40 µl and/or 80 µl of liquid or
10 ml of gas to be injected in a few seconds only. The special design (patent applied for) provides absolutely
residue free combustion. The electronic control serves for absolute constant gas stream of the analytes.
vario TRACE N liquid injection
Analyzer for trace concentrations of nitrogen in mineral
oils acc. to ASTM D 4629. Combustion of the injected
sample (1-40 µl) at 1150°C in Ar/O2-mixture with
optimum NO yield. Injection of 10 ml gaseous samples
in a few seconds.
After gas drying NO detection with highly sensititve
chemiluminescence detection (CLD) with integrated
vacuum pump.
Working range N:
< 0.1 - 1000 ppm
Precision at 10 ppm:
< 3 % rel.
Detection limit:
approx. 60 ppb
PC
autosampler
chemiluminescence
detector
100 µl-syringe
manual
gas injection
carrier gas
supply
septumfree
injection port
MFC
drying
combustion tube
furnace
vario TRACE S liquid injection
Analyzer for trace concentrations of sulfur in mineral
oils acc. to ASTM D 5453 and D 6667. Combustion
of the injected sample (1-80 µl) at 1150°C in synthetic
air with optimum SO2 yield.
Injection of 10 ml gaseous samples.
After gas drying collection of the formed SO2 at an
adsorption trap. Release of the SO2 by heating of the
trap column results in a sharp peak and separation of
interfering gases like CO2.
SO2 detection by means of a highly sensitive UVfluorescence detector with integrated vacuum pump.
Working range S:
< 0.1 - 1000 ppm
Precision at 10 ppm:
< 2 % rel.
Detection limit:
approx. 10 ppb
PC
autosampler
carrier gas
supply
UVflourescence
detector
100 µl-syringe
manual
gas injection
septumfree
injection port
MFC
SO2 adsorber
drying
combustion tube
furnace
MFC
PC
UVflourescencedetector
100 µl-syringe
manual
gas injection
drying
furnace with 2 combustion tubes
MFC
SO2 adsorber
drying
manual
gas injection
carrier gas
supply
chemiluminescence
detector
autosampler
2 septumfree
injection ports
Analyzer for trace concentrations of sulfur and nitrogen
in mineral oils acc. to ASTM D 4629, D 5453, D 6667.
In one compact instrument 2 complete digestion and
detection channels for S and N are integrated. This
serves for optimum operation conditions respectively
analytical performance of two special instruments in
one combination instrument (patent applied for).
Injection takes place in sequential mode within a short
period of time from one automatic sampler position
into two injection ports. Additional manual gas injection
possible.
Working range S and N: < 0.1 - 1000 ppm
Precision at 1 ppm:
S < 2 % rel., N < 3 % rel.
Detection limit:
S approx. 10 ppb,
N approx. 60 ppb
carrier gas
supply
vario TRACE S/N liquid injection
Performance decides
vario elemental analyses for mineral oil analysis
Instrument
Sample
Volume
C%
H%
vario EL CHN
liquid injection
mineral oil
10 µl
86.59
86.58
86.59
86.54
13.44
13.44
13.44
13.44
vario EL CHNS
liquid injection
synthetic sample
(tme 23200)
10 µl
85.70
85.66
85.67
85.59
10.99
11.05
11.24
11.34
vario EL
O mode
liquid injection
butylacetate
10 µl
vario TRACE N
liquid injection
gasoline
40 µl
1.99 ppm
1.95 ppm
1.94 ppm
oil
40 µl
284.1 ppm
282.6 ppm
283.7 ppm
decaline
toluene based
standard 0.15 ppm
80 µl
80 µl
0.097 ± 0.003 ppm
0.145 ± 0.006 ppm
gasoline 95
diesel
80 µl
80 µl
14.65 ± 0.19 ppm
29.94 ± 0.38 ppm
butane I
butane II
propane I
10 ml
10 ml
10 ml
0.34 ± 0.015 ppm
0.24 ± 0.015 ppm
0.09 ± 0.01 ppm
vario TRACE S
liquid injection
gas injection
S%
1.748
1.754
1.750
1.767
27.55 ± 0.16 % O (theor. 27.55 %)
Issue: 7/2003. Subject to alterations.
elementar
Analysensysteme GmbH
Donaustrasse 7 · D-63452 Hanau
Telefon:
+49 (0) 61 81- 9100- 0
Telefax:
+49 (0) 61 81- 910010
Internet:
http://www.elementar.de
E-mail:
info @ elementar.de
N%
ISO 9001
Nitrogen/Protein-Macro Analyzers · CHNOS Universal Analyzers
TOC/TNb-Analyzers for Liquid and Solid Samples
Schöniger Digestion units for halogens and other hetero atoms