Description
Specifications Table
Product Name – Silver, plasma standard solution, Specpure®, Ag 10,000µg/ml
Quantity/Pack Size – 50ml, 100ml, 500ml
Form – Liquid (aqueous solution in nitric acid)
Grade – Specpure® (ultra-high purity, 99.999% min)
Application – ICP-OES, ICP-MS, AAS calibration; trace metal analysis
Product Overview
This Specpure® silver plasma standard solution delivers unmatched precision for trace metal quantification, formulated at a concentration of 10,000µg/ml in a stabilized nitric acid matrix. Engineered for compatibility with inductively coupled plasma (ICP-OES/ICP-MS) and atomic absorption spectroscopy (AAS), it ensures minimal spectral interferences and superior signal stability. The Specpure® grade guarantees ultra-low impurity levels (≤10 ppb for most contaminants), with each batch rigorously tested for homogeneity and long-term stability. The solution is packaged in HDPE bottles with tamper-evident seals to prevent contamination, while the nitric acid base (2-5% v/v) inhibits microbial growth and metal precipitation. Traceability to NIST SRMs (or equivalent) is documented in the included Certificate of Analysis, providing confidence in analytical reproducibility. Ideal for laboratories requiring high-accuracy silver determinations in environmental, geological, or industrial samples, this standard eliminates the need for in-house dilution errors with its ready-to-use concentration. The extended shelf life (24 months unopened) and light-resistant packaging further reduce operational downtime. For applications demanding the highest metrological standards, this solution meets ISO 17034 and ISO/IEC 17025 requirements, making it a benchmark for silver analysis in research and quality control workflows.
FAQs
1. What is the exact nitric acid concentration in this silver standard solution?
The solution contains 2-5% v/v high-purity nitric acid as a stabilizer, optimized to prevent silver precipitation while maintaining compatibility with most ICP and AAS instruments. The exact concentration is specified in the Certificate of Analysis for each batch.
2. Can this standard be used directly for ICP-MS without further dilution?
At 10,000µg/ml, this solution is typically diluted for ICP-MS to avoid detector saturation. A 1:100 or 1:1,000 dilution is common, but the optimal ratio depends on your instrument’s linear range and the expected sample concentrations. Always validate with your method’s calibration curve.
3. How does the Specpure® grade differ from standard analytical-grade silver solutions?
Specpure® standards undergo additional purification steps to reduce trace impurities (e.g., Cu, Pb, Fe) to ≤10 ppb, whereas analytical-grade solutions may contain up to 100x higher contaminants. This grade also includes stricter homogeneity testing and documented uncertainty values for critical applications.
4. What precautions should be taken during storage to maintain accuracy?
Store the unopened bottle at 15-25°C in its original packaging, away from direct sunlight and sources of heat or ignition. After opening, reseal tightly and use within 12 months. Avoid repeated exposure to air, as this can alter the nitric acid concentration and potentially affect silver stability.
5. Is this solution compatible with mercury or gold analysis in the same run?
While the silver matrix itself doesn’t interfere with Hg or Au detection, the nitric acid base may require method adjustments for multi-element analysis. For simultaneous determinations, verify spectral overlaps (e.g., Ag 107/109 isotopes) and consider using internal standards like Rh or Ir to correct for signal drift.
