Description
Specifications Table
Product Name – Phosphorus, plasma standard solution, Specpure®, P 10,000µg/ml
Quantity/Pack Size – 100ml, 500ml
Form – Liquid (aqueous solution)
Grade – Specpure® (ultra-high purity)
Application – ICP-OES, AAS, plasma emission spectroscopy calibration
Product Overview
This Specpure® phosphorus plasma standard solution delivers exceptional purity and consistency for demanding analytical applications. Formulated at a precise 10,000µg/ml concentration in a stabilized aqueous matrix, it eliminates common interferences while ensuring long-term stability. The solution undergoes rigorous multi-stage purification to remove trace metallic contaminants, making it ideal for low-level phosphorus detection in complex samples. Its homogeneous composition guarantees reproducible results across ICP-OES, AAS, and other plasma-based techniques. The Specpure® grade certification provides documented traceability to NIST reference materials, while the acidified formulation prevents precipitation and microbial growth. Each batch undergoes quantitative analysis via primary standard titration to verify concentration accuracy within ±0.5% tolerance. The solution’s low background emission profile minimizes spectral overlaps, particularly in multi-element analyses. Packaged in HDPE bottles with tamper-evident seals, it maintains integrity during storage and transport. The extended shelf life of 24 months from date of manufacture reduces inventory turnover requirements while maintaining performance specifications.
FAQs
1. What is the matrix composition of this phosphorus standard solution?
The solution uses a dilute nitric acid matrix (typically 2-5% v/v) to ensure complete phosphorus solubility and prevent hydrolysis or precipitation over time. The exact acid concentration is optimized to balance stability with minimal spectral interference in plasma-based techniques.
2. Can this standard be used for phosphorus determination in organic matrices?
While primarily designed for aqueous samples, the solution can serve as a calibration standard for organic matrices after appropriate digestion or extraction procedures. However, matrix-matched standards may be required for accurate quantification in complex organic samples due to potential ionization effects in plasma.
3. What is the recommended storage temperature for maintaining stability?
Store the unopened solution at 15-25°C in its original container, protected from direct sunlight. Avoid refrigeration as temperature fluctuations may cause condensation that could potentially alter the concentration through dilution. The HDPE bottle provides sufficient light protection during normal storage conditions.
4. How does the Specpure® grade differ from standard analytical grades?
Specpure® standards undergo additional purification steps including sub-boiling distillation and ion exchange chromatography to achieve lower impurity levels (typically <10 ppb for most metallic contaminants). The certification process includes more comprehensive elemental analysis and stricter tolerance limits compared to standard analytical grades.
5. What is the typical detection limit achievable with this standard?
When used with modern ICP-OES instruments, this standard enables reliable phosphorus quantification down to approximately 5-10 ppb in simple matrices, depending on instrument configuration and sample preparation. The high concentration allows for flexible dilution to create working standards across multiple orders of magnitude.
