Description
Specifications Table
Product Name – Arsenic, plasma standard solution, Specpure®, As 10µg/ml
Quantity/Pack Size – 100ml
Form – Liquid (aqueous solution in 2% HNO₃)
Grade – Specpure® (ultra-high purity, NIST-traceable)
Application – ICP-OES, ICP-MS, AAS calibration; environmental/toxicology testing
Product Overview
This Specpure® arsenic plasma standard solution delivers 10µg/ml arsenic in a 2% nitric acid matrix, engineered for uncompromising accuracy in trace metal analysis. The solution undergoes rigorous purification to eliminate contaminants, ensuring <0.1% interference from alkali/alkaline earth metals. Its NIST-traceable certification guarantees compliance with ISO 17025 standards, while the sealed amber HDPE bottle with PTFE-lined cap prevents leaching or evaporation. The 2% HNO₃ matrix matches common sample digestion protocols, eliminating dilution errors during calibration. Stability is verified for 24 months when stored at 15–25°C, with lot-specific certificates of analysis provided for each batch. The solution’s homogeneity is validated via ICP-OES at multiple wavelengths (188.980nm, 193.696nm), confirming uniformity even at microliter volumes. For labs requiring ultra-low detection limits, this standard enables quantification down to sub-ppb levels when used with high-resolution ICP-MS.
FAQs
1. What is the shelf life of this arsenic standard solution after opening?
Once opened, the solution remains stable for 12 months if stored at 15–25°C in the original bottle with the cap tightly sealed. Refrigeration is not required but can extend stability for infrequently used standards.
2. Can this standard be used directly for graphite furnace AAS without further dilution?
The 10µg/ml concentration is typically too high for direct GF-AAS use. A 1:100 dilution with 2% HNO₃ is recommended to achieve the 0.1µg/ml working range for most graphite furnace applications.
3. How does the Specpure® grade differ from standard ICP-grade arsenic solutions?
Specpure® undergoes additional sub-boiling distillation and ion-exchange purification to reduce metallic impurities below 10ppt, whereas standard ICP-grade solutions may contain up to 100ppt of contaminants like lead or cadmium.
4. Is this solution compatible with organic solvents like methanol or acetone?
The aqueous nitric acid matrix is not miscible with organic solvents. For organic-based calibrations, transfer the arsenic into a volatile solvent via evaporation/reconstitution or use a dedicated organometallic standard.
5. What documentation is provided with each batch for quality assurance?
Each bottle includes a certificate of analysis with lot-specific data: exact concentration (±0.5% tolerance), ICP-OES validation spectra, expiry date, and traceability to NIST SRM 3103a arsenic standard.
