IRMS Horizon 2
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IRMS Horizon 2
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Viet Nam

IRMS Horizon 2

  • High sensitivity due to increased acceleration voltage
  • Reduced backgrounds due to mini-ESA, true differential pumping and zoom optics design
  • Full range of accessories for sample introduction

The Nu Instruments Horizon 2 IRMS instrument is designed for flexibility, reliability and high performance, with user friendly instrument control and data analysis software. This next generation instrument possesses unique features for both Dual Inlet (DI) and Continuous Flow (CF) analysis, interfacing with a wide range of sample preparation peripherals.

KEY FEATURE

  • All masses measured at increased accelerating potential
  • Increased CO2 sensitivity for Dual Inlet & Continuous Flow whilst maintaining outstanding linearity
  • Large mass dispersion radius; 30cm effective magnetic deflection radius for CO2
  • Mass resolution CNOS and H (m/Δm) >110 (10% valley)
  • High efficiency ion source with integral focusing lenses
  • Electromagnet stabilised with Hall probe control
  • Mini ESF in front of the mass 3 collector to remove low energy He+ ions from the HD+ ion beam
  • Fully bakeable analyser (up to 100oC)
  • Simultaneous ion beam collection using two to five Faraday collectors
  • High efficiency, narrow entrance, deep Faraday collectors
  • Amplifiers capable of measuring signals up to 55V
  • Integral ion source heater (temperature up to 250oC)
  • Heated reference gas injector for SO2
  • Redesigned GC interface

The Horizon 2 has a wealth of novel features, giving the ultimate in performance for both routine and research applications for stable isotope ratio measurements. The Horizon 2 Ion source runs up to 7kV acceleration potential. Its unique patented zoom optic system and narrow Faraday cups achieve exact peak coincidence, enhance peak shape and abundance sensitivity, thus increasing accuracy. The Mini Electro-Static Filter in front of the mass 3 (DH) collector eliminates low energy He+ ions from the HD+ ion beam. The true differential pumping for the source and analyser block exhibits less ion beam scattering inside the analyser and therefore reduces the background noise in CF mode.

Sample preparation

The Horizon 2 is configured for a wide range of both CF and DI sample introduction systems. CF inlets are connected via an automated isolation valve and include capillary gas chromatography (Scion 8300GC) and elemental analyser (Nu Ember). The Dual Inlet is located in a separate cabinet with the sample inlet valve on the ion source housing, minimising dead volume and gas path lengths. DI sample options include a carbonate/phosphoric acid preparation unit, a water equilibration unit and a sample manifold with optional crackers.

The Nu Ember Elemental Analyser (EA) allows for the rapid determination of elemental content of carbon, nitrogen, hydrogen, oxygen, and sulphur (CNHOS) in a wide variety of organic and inorganic samples in solid or liquid form. When coupled to the Nu Horizon 2 IRMS the system is then capable of determining the isotopic composition of the samples. The system is useful in a wide variety of fields such as food adulteration and provenance, environmental science, and forensics.

The Nu Ember has a host of flexible configurations designed to enable higher throughput, robust analysis and facilitate maintenance. Learn more about the Nu Ember features.

Gas Chromatography
The Scion 436/8300 GC is used for separation of complex mixtures before conversion to gases via the Nu GC-IRMS interface unit. Nu Instruments have worked with Scion to ensure seemless integration. The interface can be used for quantitative conversion to CO2, N2, H2, and CO for 13C, 15N, D, and 18O analyses. A wide range of sample preparation and introduction options are available from Scion and third-party vendors.
 

IRMS Horizon 2HORIZONstable isotope mass spectrometryIRMSstable isotopeisotope analysis
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