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soli TOC
The versatile instrument for temperature-
dependent differentiation of carbon in solids
High sensitivity
High data quality Great flexibility
Extreme durability
soli TOC
Dependable
and versatile
KEY FEATURES
• Measurement range of 0.001-100%
• Fully automated analysis with
89 position autosampler
• Temperature programming with
fast heating rates
• Optional carrier gas switching for better separation of ROC and TIC
• Option to determine nitrogen simultaneously
• Advanced crucible technology with automatic ash removal
• Conforms to new (DIN 19539) as
well as old (DIN 15936) standards
for TOC determination in solids
sol i TOC
100
200
300
400 500 600 700
800
900 1000 1100
0
0 200 400600 8001000 12001400
100
200
300
400 500 600 700
800
900 1000 1100
0 100
200
300
400 500 600 700
800
900 1000 1100
0
0 200 400600 8001000 12001400
100
200
300
400 500 600 700
800
900 1000 1100
0
Temp [°C]
\f (s)
Temp [°C]
\f (s)
T\bC 400
TIC 900
T\bC 400
TIC 900
IR Signal IR Signal Carrier gas switching for better
separation of ROC an\f TIC
Soi\b samp\bes (Cambiso\b B Horizon, 150 mg each)
R\bC R\bC
The soli TOC cube can operate with three-step (left) as well as two-step temperature programming with
gas switching (right). The soli TOC cube as a single elemental analyzer can therefore perform all of the
measurement protocols outlined in DIN 19539 and DIN 15936.
The determination of TOC in solids has
recently become ever more important. Not
just for evaluating wastes, TOC-content
measurement is also an important aspect of
assessing soils. The new soli TOC cube oers
users the option of measuring not only total
organic and total inorganic carbon, but also
determining the total elemental carbon (ROC).
In addition to the classical TOC determination
by direct and subtraction acidication
methods, temperature programming can also
be employed, which requires neither sample
preparation nor the use of acids.
TOC 400 , ROC AND TIC 900
When determining the carbon content
of solids, often it is not enough just to
differentiate between TIC and TOC. When
evaluating wastes, for example, elemental
carbon (ROC) should be determined
separately, since this form of carbon is
not bioavailable. For this purpose, a
temperature ramping program is used:
TOC is determined at 400 °C, ROC between
400 °C and 600 °C, and TIC between 600 °C
and 900 °C. The sample is heated at a
rate of 70 °C per minute to the designated
temperature, and then maintained for
the given hold time. The CO
2 produced
at the different temperatures represents
the various carbon fractions. With the
temperature programming of the soli TOC
cube, one can determine the TOC
400, ROC,
and TIC
900 simply and reliably, in compliance
with the DIN 19539 standard.
INNOVATIVE GAS SWITCHING
The separation of ROC and TIC can be
improved by the use of an inert carrier
gas. After the 400 °C temperature step,
the carrier gas is switched from oxygen
to nitrogen and the sample is directly
pyrolyzed at 900 °C. Under these
conditions, the ROC remains in the sample
container while the TIC is converted to CO
2.
After the TIC is determined, the system is
given oxygen again, whereby the ROC is
oxidized. In most cases, this technique
results in a better separation of TIC and ROC.
Unmatched analytical performance
In temperature programming, a precise, adjustable temperature
is required for reproducible measurements. Thus in the soli TOC
cube, the temperature is measured where it matters, directly at
the crucible. This eliminates all possible thermal interferences.
Additionally, the use of a post-combustion catalyst ensures that
even samples with a high carbon content are quantitatively
oxidized and achieve equally high measurement quality.
With the soli TOC cube, larger samples on the order of grams can
be reliably analyzed: just weigh the solid samples in the reusable
crucibles, place them on the autosampler, and start the sequence.
This makes the soli TOC cube the perfect instrument for the precise
analysis of inhomogeneous samples. Measurement of TOC according
to DIN 15936 is also remarkably simple. The sample is acidifled direct-
ly in the ceramic crucible and after drying delivered immediately to
the instrument – simple, fast, and reliable.
The soli TOC cube is capable of distinguishing between the diflerent
forms of carbon by either temperature programming or a combined
temperature program with gas switching. In a single program,
the TOC, ROC, and TIC can all be determined. Alternatively, the
classical method of acidi4cation, drying, and TOC measurement at
constant temperature is also possible. Furthermore, the nitrogen
concentration of the sample can be analyzed at the same time as
carbon by using an additional EC detector.
Unsurpassed flexibility
The software allows for implementing predeflned methods in
addition to custom programming of the heating rate and hold
times. Peak integration is executed automatically and can be
manually checked. This ensures that even the most di4cult
analyses can produce precise measurement of each individual
component.
Reliable analysis
Simplifled sample preparation
Elementar Analysensysteme GmbH
Elementar-Straße 1 · 63505 Langenselbold (Germany)
Phone: +49 (0) 6184 9393-0 | info@elementar.de | www.elementar.de
IDEAL SOLUTION FOR
• Environmental laboratories
• Cement plants
• Quality control laboratories
• Academic research groups
SAMPLE TYPES ANALYZED
• Soil samples
• Waste
• Construction materials and wastes
• Lime
• Sand
Outstanding precision and accu-
racy through high performance
combustion. Matrix-indepen-
dent results. Long-term stability
of calibration.
Carbon determination has never been easier!
EASE OF USE
The soli TOC cube is optimized to significantly simplify daily
routine operation. Clearly arranged, easily accessible system
components minimize maintenance efforts. The tool-free
clamp connection system ensures a reliably leak-tight
instrument at any time. Thus, customers can enjoy smooth
analyses and confidence in their results.
QUALITY YOU CAN TRUST
Our consumables and spare parts are designed to meet the
highest quality standards and reliability. They are certified
and validated in accordance with international norms and
standards. We do not compromise on quality of our parts
and chemicals – this is the prerequisite of a guaranteed
long lifetime of our instruments.
IN ACCORDANCE WITH THE OFFICIAL STANDARDS
The soli TOC cube operates in full compliance with all
relevant national and international norms or standards
such as DIN 19539, DIN 15936, and DIN 13137.
Wide range of optional conver-
sion kits available for special
applications. Upgradeable at
any time.
Outstanding sensitivity thanks
to high performance, state-of-
the art technology.
Outstanding robustness and lon-
gevity thanks to state-of-the-art
technology.
SUBSTANCE
TOC 400 [%]ROC [%] TIC 900 [%]
FLUVISOL 3.63 0.250.041
ARENOSOL 1.650.087 0.008
SOIL WITH SLUDGE 2.060.120.033
EXCAVATED SOIL 0.230.150.42
COAL MINE TAILINGS 17.2118.93 11.55
FOUNDRY SAND 1.211.93 1.27
WASTE
INCINERATOR ASH 0.51
0.52 0.19
SLAG 0.024 0.098 0.16
CONTROL MIXTURE ACCORDING TO
DIN 19539 2.14
1.7 32.08
Art.-No. 05 005 111, 02?/?2017 A
High sensitivity High data quality Great flexibility
Extreme durability
Sample weight: 200 mg
Elementar – your partner for elemental analysis
Elementar is the world leader in high performance analysis of organic elements.
Continuous innovation, creative solutions and comprehensive support form the
foundation of the Elementar brand, ensuring our products continue to advance
science across agriculture, chemical, environmental, energy, materials and
forensics markets in more than 80 countries.
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Date d'upload du document :
mardi 9 novembre 2021