Kirjeldus
Based on the Elementar “cube” platform which has set the gold standard for elemental analysis, iso TOC cube presents a new high temperature combustion method for the quantitative and isotopic analysis of dissolved organic carbon and total bound nitrogen (TNb). By performing direct analysis on the sample, the need for laborious pre-preparation of samples is removed allowing you to quickly analyze many samples.
Since iso TOC cube utilizes high temperature combustion (up to 1,200 °C) rather than wet chemical or UV oxidation the instrument gives greater analytical robustness when analyzing refractory organic substances such as humic acids or lignin which may be only partly oxidized using other techniques. iso TOC cube also uniquely deploys a second stage reduction furnace for reduction of nitrogen oxides for 15N analysis of TNb followed by a three-stage water removal process and a halogen trap delivering pure CO2 and N2 gases to the IRMS for analysis.
For the 15N analysis of TNb, iso TOC cube uses our unique Low Concentration Module (LCM) and an integrated membrane degasser for removing dissolved N2 increasing sample detection levels. The LCM uses cryogen-free, thermoelectric cooling combined with Elementar’s Advanced Purge & Trap separation technology to achieve TNb detection levels of 25 ppm. With these technologies, iso TOC cube is the only commercially available instrument for the direct 15N analysis of TNb in aqueous samples.
When combined with an Elementar IRMS system, iso TOC cube provides a complete solution with fully integrated sample acquisition and data processing through ionOS® software. This allows the user to take full advantage of the on-board maintenance counters, sleep/wake-up functionality and synchronized methods.
KEY FEATURES
- The only truly integrated TOC-IRMS system available
- Dissolved carbon and nitrogen isotope analysis at the highest level
- Unique applications for IRMS analysis of TOC and TNb
- 100% C and N recovery independent from sample type and matrix
- Matrices ranging from the most dilute aqueous samples to aggressive soil extracts
- Liquid injection volume of up to 3 ml
- Superior ease of use through sophisticated self-diagnosis
- Integrated 32 position autosampler for liquids as standard
