Description
Specifications Table
Product Name – Rhodium, plasma standard solution, Specpure®, Rh 1000μg/ml
Quantity/Pack Size – 100ml, 50ml, 500ml
Form – Liquid (aqueous solution in 2% HNO₃)
Grade – Specpure® (ultra-high purity, traceable)
Application – ICP-OES, ICP-MS, AAS calibration; trace metal analysis
Product Overview
This Specpure® Rhodium plasma standard solution delivers a certified 1000µg/ml concentration in a stabilized nitric acid matrix, ensuring long-term homogeneity and minimal contamination risk. Manufactured under ISO 17034 and ISO/IEC 17025 standards, the solution undergoes rigorous multi-element interference testing to guarantee accuracy in spectroscopic applications. The ultra-low impurity profile (typically <10 ppb for most contaminants) makes it ideal for high-sensitivity instrumentation where matrix effects must be minimized. Each batch includes a comprehensive Certificate of Analysis with traceability to NIST SRMs, detailing elemental purity, density (1.02 g/cm³ at 20°C), and pH (≤1.5). The solution’s 2% HNO₃ base ensures compatibility with most plasma instruments while preventing precipitation or adsorption losses during storage. Packaged in HDPE bottles with tamper-evident seals, the standards maintain stability for ≥24 months when stored at 15–25°C, protected from light. The amber bottle design further reduces photodegradation risks, preserving the rhodium’s +3 oxidation state. For laboratories requiring sub-ppb detection limits, this standard eliminates background noise from common interferents like iron, copper, or lead, which are present at <1 ppb levels.
FAQs
1. What is the shelf life of this Rhodium standard solution when unopened?
The unopened solution remains stable for 24 months from the date of manufacture when stored at 15–25°C in its original packaging, away from direct sunlight. The amber HDPE bottle provides additional protection against light-induced degradation, while the nitric acid matrix prevents microbial growth or hydrolysis.
2. Can this standard be used for both ICP-OES and ICP-MS without dilution?
The 1000µg/ml concentration is optimized for ICP-OES but typically requires dilution (1:100 to 1:1000) for ICP-MS to avoid detector saturation. The low total dissolved solids (<0.1%) and ultra-pure matrix ensure minimal cone clogging or signal suppression in mass spectrometry, though we recommend validating dilution protocols with your instrument’s linear range.
3. How does the Specpure® grade differ from standard analytical-grade Rhodium solutions?
Specpure® standards undergo an additional purification step via sub-boiling distillation and ion-exchange chromatography, reducing trace impurities (e.g., Pt, Pd, Ir) to <10 ppt levels. Unlike analytical-grade solutions, which may contain up to 100 ppb of contaminants, Specpure® ensures baseline stability for ultra-trace analysis, with certified values for 70+ potential interferents provided in the CoA.
4. What precautions should be taken when handling this nitric acid-based solution?
Always wear nitrile gloves, safety goggles, and a lab coat when handling, as the 2% HNO₃ matrix can cause skin irritation or corrosion to metals. Work under a fume hood to avoid inhaling acidic vapors, and neutralize spills with sodium bicarbonate before cleanup. The solution is incompatible with strong bases, organic solvents, or reducing agents—store separately to prevent violent reactions.
5. Is this standard compatible with automated liquid handling systems?
Yes, the solution’s low viscosity (1.1 cP at 20°C) and absence of particulate matter make it suitable for automated diluters or autosamplers. However, we recommend using PTFE or PFA syringe tips to prevent rhodium adsorption onto glass surfaces, which can occur at concentrations below 10 µg/ml. Pre-rinsing the system with 2% HNO₃ minimizes carryover between samples.
