Nu Instruments | High Precision Boron Isotope Analysis of Small Samples
Learn how the Nu Plasma MC-ICP-MS achieves precise boron isotope measurements from low-concentration samples. The study demonstrates excellent stability, low blank contribution and reliable results for both 50 ppb and 10 ppb boron standards.
Boron isotope measurements present unique analytical challenges because boron has only two stable isotopes and is prone to memory effects and contamination. This work evaluates performance using specialised sample introduction components designed to minimise boron background.
Measurements were performed on both 50 ppb and 10 ppb NIST SRM 951 solutions over a continuous 5.5-hour sequence. Instrument optimisation focused on mass fractionation stability rather than maximum sensitivity, resulting in significantly improved reproducibility.
The study achieved excellent internal and external precision, even for the lower concentration samples. Results demonstrate the capability of the Nu Plasma platform for precise isotope analysis of very small boron samples commonly encountered in environmental and geological research.
Key Takeaways:
- Precise isotope measurements achieved on samples containing only a few nanograms of boron.
- Stable mass fractionation conditions maintained over extended analyses.
- Excellent reproducibility for both 50 ppb and 10 ppb sample concentrations.
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