Description
Specifications Table
Product Name – Iron 57, 57Fe, plasma standard solution, Specpure®, 57Fe 10µg/ml 50ml
Quantity/Pack Size – 50ml
Form – Liquid (aqueous solution)
Grade – Specpure® (ultra-high purity)
Application – Isotope dilution analysis, ICP-MS, plasma spectroscopy, nuclear research
Product Overview
This Iron-57 (57Fe) plasma standard solution is a Specpure®-grade reagent designed for applications demanding exceptional isotopic purity and analytical precision. Formulated at a concentration of 10µg/ml in a stabilized aqueous matrix, it eliminates background interference from natural iron isotopes (54Fe, 56Fe, 58Fe), making it ideal for isotope dilution mass spectrometry (ID-MS) and plasma-based techniques. The solution undergoes rigorous purification to remove trace metallic contaminants, ensuring minimal signal noise during high-resolution measurements. Its homogeneous composition guarantees consistent performance across batch analyses, while the 50ml pack size balances cost-efficiency with sufficient volume for repeated calibrations. The Specpure® certification confirms compliance with international standards for isotopic reference materials, with documented impurity levels below 10 ppb for most transition metals. Compatible with most ICP-MS and ICP-OES instruments, this standard requires no additional preparation beyond standard dilution protocols. Storage in its original amber glass bottle preserves stability for up to 24 months under recommended conditions.
FAQs
1. What is the isotopic purity of this 57Fe standard solution?
The Specpure® grade ensures >99% enrichment of Iron-57, with residual natural isotopes (54Fe, 56Fe, 58Fe) collectively constituting less than 1% of total iron content. Certificate of Analysis provides exact batch-specific values.
2. Can this solution be used directly in ICP-MS without further dilution?
While the 10µg/ml concentration is suitable for many applications, direct use depends on your instrument’s detection limits and sample matrix. For trace-level analysis, a 10-100x dilution with 2% HNO₃ is typically recommended to avoid detector saturation.
3. How does the Specpure® grade differ from standard analytical-grade iron solutions?
Specpure® undergoes additional purification steps to remove spectroscopic interferences (e.g., argon-based polyatomic ions) and metallic contaminants. It’s specifically optimized for isotopic ratio measurements, whereas analytical-grade solutions prioritize overall iron concentration accuracy.
4. What is the shelf life after opening the bottle?
Unopened, the solution remains stable for 24 months when stored at 15-25°C. After opening, use within 6 months or discard if turbidity/precipitation occurs. Always reseal tightly and store away from direct light to prevent photodegradation.
5. Is this solution compatible with organic solvents for sample preparation?
The aqueous matrix is miscible with polar organic solvents like methanol or acetone (≤20% v/v). For non-polar solvents, evaporate the aqueous phase under nitrogen and reconstitute in your solvent of choice, though this may affect isotopic recovery rates.
