ICPMS-2040 series & ICPMS-2050 series

An advanced mini-torch design, combined with a redesigned collision/reaction cell, and a high-performance quadrupole mass filter result in an environmentally friendly system with superior analytical performance.

Proprietary Advanced Mini-Torch System

Low Argon Gas Consumption

A major drawback of ICP-MS systems is the large argon gas consumption. Shimadzu’s mini-torch system consumes 11 L/min of argon, two-thirds the amount used by typical plasma torches. Continuous operation using a 7 m³ gas cylinder is up to 10 hours. Utilizing Eco mode (5.5 L/min plasma) during standby can further reduce argon gas consumption.

No Need for High-Purity Argon Gas

ICPMS-2040/2050 Series systems have a Shimadzu-made high-frequency power supply that features high-speed matching functionality, allowing for the use of low-cost, low-purity (99.95 %) argon gas to reliably generate a robust plasma.

Redesigned Collision/Reaction Cell

Collision Mode

Inert helium gas is introduced into the cell to selectively attenuate kinetic energies of polyatomic ions based on their sizes. These low energy ions are removed from the ion beam by applying a bias voltage at the cell exit. Because fewer by-product ions are generated, it can be used for a wide range of applications.

When analyzing ⁷⁸Se, ArAr polyatomic ions interfere with it. Since Se and ArAr have different ion sizes, a kinetic energy difference occurs in the cell where He gas is introduced. As a result, Se can be measured with high sensitivity by setting an energy filter where only Se is exceeded*.

*Note: Example of how collision mode can be used.

Online Interelement Correction (IEC)

Shimadzu’s proprietary online interelement correction (IEC) function is used to correct for spectral interference that cannot be eliminated by the collision mode. By only measuring one standard sample an interference correction is calculated and applied to all samples run subsequently.

Reaction Mode　

When a specific gas is introduced into the cell, the reaction of gas with ions will occur to reduce interferences. Target ions can be analyzed with high sensitivity, while both doubly charged ions not eliminated by the collision mode and polyatomic ions can be reduced.

When analyzing ⁷⁸Se, ArAr Polyatomic ions and Gd doubly charged ions interfere. However, charge and proton transfer occur by contacting interfering ions and H₂ gas in the cell in which H₂ gas is introduced. As a result, the target element, m/z=78, can be detected with high sensitivity. This shows how the reaction mode can mitigate the effects of doubly charged ions that cannot be removed by the collision mode*.

*Note: Example of how reaction mode can be used.

High-Performance Quadrupole Mass Filter

Charge Stabilizer

To mitigate ion charge effects on the mass filter, a pulse voltage is applied between the analysis of each mass to maintain a constant charge level at the electrode surface. This improves the signal stability when analyzing samples for long periods (patent pending).

High-Resolution Mode and Half-Mass Correction

Masses can be analyzed at 0.5 u intervals using the high-resolution mode, enabling half-mass correction for doubly charged interferences common in rare earth elements (REEs).

The improved gas controller features high-speed cell gas purging. Combined with ProActive Rinsing, measurement times can be significantly shortened without any additional accessories or cost.

• High-Speed Cell Gas Purging

  The redesigned gas controller shortens cell gas introduction and exhaust times (patent pending).

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ProActive Rinsing

While measuring multiple samples, the rinsing sequence can be started early by sending the autosampler probe to rinse while collecting data using sample already in the suction line. This greatly reduces measurement time and conserves sample.