Description
Specifications Table
Product Name – Lead, plasma standard solution, Specpure®, Pb 1000µg/ml
Quantity/Pack Size – 100ml, 50ml, 500ml
Form – Liquid (nitric acid solution)
Grade – Specpure® (ultra-high purity)
Application – ICP-OES, AAS, plasma spectrometry calibration
Product Overview
This Specpure® lead plasma standard solution delivers 1000µg/ml of ultra-pure lead (Pb) in a stabilized nitric acid matrix, engineered for precision in plasma spectrometry applications. The solution undergoes rigorous purification to eliminate metallic and anionic contaminants, ensuring minimal interference during calibration. Its traceability to NIST standards guarantees reliable quantitative analysis, while the acidified matrix enhances long-term stability—preventing precipitation or adsorption losses. The low background impurity profile (<10 ppb for most common interferents) makes it particularly suitable for trace-level determinations in environmental, clinical, or industrial samples. Packaged in HDPE bottles with tamper-evident seals, the solution resists leaching and contamination during storage. Each batch includes a certificate of analysis detailing exact concentration, uncertainty values, and expiry date. Compatible with most ICP-OES and AAS instruments without requiring additional dilution for standard curves. The nitric acid base (2-5% v/v) ensures complete lead solubilization while maintaining instrument compatibility.
FAQs
1. What is the shelf life of this lead plasma standard solution when unopened?
The unopened solution maintains its certified concentration for 24 months from the date of manufacture when stored at 15-25°C in its original packaging. Always verify the expiry date on the certificate of analysis.
2. Can this standard be used directly for ICP-MS analysis without further dilution?
While the 1000µg/ml concentration is suitable for ICP-OES, ICP-MS typically requires dilution to ppb levels (e.g., 1:1000) to avoid detector saturation and matrix effects from the nitric acid.
3. How does the Specpure® grade differ from standard analytical-grade lead solutions?
Specpure® undergoes additional purification steps to reduce metallic impurities (e.g., Fe, Cu, Zn) below 10 ppb and anionic contaminants (e.g., Cl⁻, SO₄²⁻) below 5 ppb, ensuring minimal spectral interference in high-sensitivity applications.
4. What precautions should be taken when handling the nitric acid matrix?
Always wear acid-resistant gloves, safety goggles, and work in a fume hood. The 2-5% nitric acid concentration is corrosive; neutralize spills with sodium bicarbonate and rinse with water.
5. Is this solution compatible with organic solvent-based sample preparations?
The aqueous nitric acid matrix may not be miscible with organic solvents like hexane or toluene. For organic extractions, consider evaporating an aliquot to dryness and reconstituting in a compatible solvent.
