1. Content Overview
Isoprime stable isotope mass spectrometer has significant advantages in elemental analysis, gas chromatography and headspace gas analysis, and can provide the most excellent performance in any application field . Isoprime isotope mass spectrometry is the first choice for experts in geological sciences, environmental sciences, medicine and food certification. The origins of Isoprime date back to the early 1970s. Through the 1980s and 1990s, from the original VG Isotope Company to the final stable isotope mass spectrometry expert Isoprime Company, its production lines continued to develop. Over the past 35 years, continuous research and development has created a series of famous products - VG Sira, Prism, Optima IRMS. Adhering to hereditary advantages, Isoprime represents the world's most advanced combination of isotope mass spectrometers and sample introduction systems. Isoprime is a wholly owned subsidiary of Elementar, a company with over 110 years of expertise in elemental analysis.
Isoprime100 stable isotope mass spectrometer is comparable to the DELTA series mass spectrometer, and can provide excellent performance in any application field, especially in the analysis with elemental analyzers and gas chromatographs. advantages. The Isoprime100 isotope mass spectrometer has an ultra-wide dynamic linear range of 0 to 100 V that traditional mass spectrometers do not have, and can achieve rapid switching and automatic calibration during the detection process. It has high sensitivity and high resolution, and can be used to analyze geological samples such as soil and rocks. , minerals, carbonates, oil shale, ice cores, water, oil and gas samples such as kerogen, crude oil, alkanes, aromatic hydrocarbons, natural gas and other samples for accurate analysis of C, H, N, O stable isotopes.
New design principles, unique Isoprime Universal Three-cup Receiver (UTC), patented design of high-performance Faraday cup, has proven its lifespan of more than ten years. Expandable with an IsoPrime-exclusive patented state-of-the-art electrostatic filter (ESF), providing unparalleled continuous flow H2 measurement capabilities.
Technical parameters:
Mass number range: 1～80 u;
Resolution: m/Δm≥100 (10 peak and valley measurements);
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Absolute sensitivity: ≤1200 molecules/ion (continuous flow mode);
Ion source linearity: 0.02‰/nA;
H3+ factor: <8 × 10 - 6/nA;
H3+ factor stability: ≥0.03 × 10 -6/nA/H;
Acceleration voltage: 5 kV;
Amplifier output range :0～100V.
II. Application scope and application examples
Isoprime100 stable isotope mass spectrometer is widely used in food hygiene, doping detection, forensic identification, clinical biology, marine hydrogeography, global climate Change, modern environment and ancient environment, modern soil and ancient soil, agriculture and forestry, geology and earth sciences, oil and gas research, and ecology, respiratory CO2, archeology and anthropology, wildlife tracking, deuterium tracking, carbonates wait.
In paleoenvironmental research, we can obtain corresponding paleotemperature information through the corresponding 18 O stable isotope inversion in carbonate rocks. In a thermodynamically balanced carbonate rock system, carbonate rock ions of various abundances must have an equilibrium similar to the following:
Foreign Geological and Mineral Science and Technology Achievements
Wang et al. (2004) and Eiler J.M. and Schauble E.A. (2004) of the California Institute of Technology conducted pioneering research and proved that this reaction is only related to temperature, thus proposing a new paleotemperature indicator—Δ47 . It can be seen that this reaction only includes one phase state, and there is no need to know the isotope information of the water environment of carbonate rock precipitation. From the perspective of calculation and accuracy, this indicator is more accurate.
For the measurement of δ13 C and δ18 O, generally only 28, 30 (CO) and 44, 45, 46 (CO2) need to be measured. The measurement of Δ47 (13 C18 O16 O) places higher requirements on the instrument.
In order to meet the latest analysis needs, Isoprime has adjusted the original instrument structure based on its latest Isoprime100 stable isotope, and designed a Faraday cup receiver specially used for "Clumped Isotope" analysis. container, 5 of which are specially designed to receive 44, 45, 46, 47, 48, and 49 cups. Considering that the ion concentrations of 47, 48 and 49 are extremely low, a specially customized preamplifier is used to expand the dynamic measurement range so that 47/44 can be measured under the highest signal-to-noise ratio condition without exceeding the 44 measurement range.
3. Data source
Eiler J M, Schauble E.2004.13 C18 O16 O in earth's atmosphere. Geochimica et Cosmochimica Acta, 68: 4767～4777