Page 13 - Shimadzu Nexis GC-2030

Exceptional Versatility and Productivity

Simultaneously Control Up to Advanced Flow Technology
Three Injection Units and
Four Detectors Shorter Analysis Time Multiple Chromatograms Obtained from a
– Back ush System – Single Analysis – Detector Splitting/Switching System –
The most optimized system can be selected depending on Once target compounds have been detected, the back ush Multiple chromatograms can be obtained at the same time by
the purpose of analysis and target components. Four system reverses the carrier gas ow to discharge non-eluting using the detector splitting/switching system to split or switch
d e t e c t o r s c a n b e c o n t r o l l e d s i m u l t a n e o u s l y u s i n g components in the column through the injection port. This the ow exiting the analytical column and send the eluted
LabSolutions.* shortens analysis times and improves productivity. components to multiple detectors. Consequently, much more
In addition, both capillary and packed columns can be information can be obtained from each analysis, which
attached, so multiple analysis methods can be run with a improves productivity by saving time and reducing costs.
single GC unit, saving on laboratory space.
Target
* The number of detectors installed depends on the type of detector. AOC -30+HS-20 NX (Trap mode) + GCMS-QP2020 NX components Impurity components
™
Normal Analysis High-Separation Analysis
– Heart-cut System –
Switching Carrier Gases via a Gas Selector 10 15 20 25 30 min Heart-cut is a method of performing separation using two
columns with different selectivity. In this system, components
that could not be separated by the rst column are introduced
Changing the type of carrier gas involves a great deal of work, including replacement of the piping and gas lters. With the Back ush start Analysis time into a second column with different properties, and further
gas selector (option), the carrier gas can be switched via the software, so different analyses can be performed while easily Back ush Analysis 1 separation is performed. Heart-cut systems can achieve
switching the carrier gas. 2 high-resolution analysis, which is normally dif cult to attain
by single-column analysis. There is no retention time shift
even after multiple heart-cuts.
10 15 min

UPS 467
Carrier Gas Selection in Residual Solvent Tests Faster Analysis with Hydrogen Carrier Gas

The gas species used for analysis are recorded in the acquired data le, ensuring data integrity.
Hydrogen can be a safe and highly effective carrier gas. As a highly ef cient carrier gas with a at Van Deemter curve, it maintains
its separation ef ciency across a wide linear velocity range. This makes it both a good substitute for Helium and also a great
7 13 1: Methanol choice for speeding up analysis times.
2: Acetonitrile We know safety is paramount, which is why the Nexis GC-2030 offers an optional built-in hydrogen sensor (option). It not only
8 maintains a safe standby mode for early detection of any potential leaks, but also shuts off the hydrogen ow. The main unit also
10 12 3: Methylene chloride (DCM)
Degree of 4: trans-1,2-Dichloroethylene includes an automatic carrier gas leak check function, which is very helpful when using hydrogen as a carrier gas.
separation
between 2 and 3 14 5: cis-1,2-Dichloroethylene
1.5* 11
6: Tetrahydrofuran
4 5 15 7: Cyclohexane Hydrogen
2 3 9 Helium carrier gas: 30 cm/s sensor
1 6 8: Methyl cyclohexane Hydrogen carrier gas: 60 cm/s
9: 1,4-Dioxane
10: Toluene
Helium carrier gas
11: Chlorobenzene
7 13 12: Ethylbenzene
13: m,p-Xylene
8 14: o-Xylene About
Degree of
separation 10 12 15: Cumene reduction
between 2 and 3
1.6* 14
11 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0
4 5 min
15
2 3 9
1 6 Example of Using Hydrogen Carrier Gas for Hydrogen Sensor Monitors Inside the GC Oven
High-Speed Analysis of Impurities in Benzene
Nitrogen carrier gas
* The degree of separation is a reference value.
Analysis of Water Soluble Solvent Samples This is not a guaranteed value.

12 Gas Chromatograph 13