Description
Specifications Table
Product Name – Lanthanum, plasma standard solution, Specpure®, La 1000µg/ml
Quantity/Pack Size – 50ml, 100ml, 500ml
Form – Liquid (aqueous solution in nitric acid)
Grade – Specpure® (ultra-high purity, NIST-traceable)
Application – ICP-OES, ICP-MS, AAS calibration; atomic spectroscopy; trace metal analysis
Product Overview
This Specpure® lanthanum plasma standard solution delivers 1000µg/ml concentration in a high-purity nitric acid matrix, engineered for exceptional accuracy in inductively coupled plasma (ICP) and atomic absorption spectroscopy (AAS) applications. The solution undergoes rigorous multi-stage purification to eliminate metallic and anionic contaminants, ensuring baseline stability and minimal interference during calibration. Each batch is individually certified with NIST-traceable reference values and accompanied by a comprehensive Certificate of Analysis detailing impurity profiles (typically <10 ppb for most transition metals). The solution’s 2-5% nitric acid base provides long-term stability while maintaining compatibility with standard ICP sample introduction systems. Packaged in HDPE bottles with tamper-evident seals, the solution resists leaching and contamination during storage. The 1000µg/ml concentration allows for precise serial dilution to create working standards across ppb to ppm ranges without introducing additional matrix effects. Ideal for laboratories requiring ultra-low detection limits, this standard solution meets ISO 17034 and ISO Guide 31 requirements for reference materials, with homogeneity and stability data validated through accelerated aging studies.
FAQs
1. What is the shelf life of this lanthanum 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. The nitric acid matrix inhibits microbial growth and metal precipitation.
2. Can this standard be used directly for ICP-MS analysis without further dilution?
Direct use is not recommended for most ICP-MS applications due to the 1000µg/ml concentration, which may exceed the linear range of many instruments. Typical working concentrations for ICP-MS fall between 1-100 ppb, requiring serial dilution with 2% nitric acid.
3. 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 impurity levels typically 10-100x lower than standard ACS or reagent grades, with certified values for over 30 potential interferents.
4. What materials are the bottles and caps made from to prevent contamination?
The primary containers are manufactured from high-density polyethylene (HDPE) with low-metal leaching properties, while the caps feature polypropylene liners. All components are pre-cleaned with ultra-pure acids and rinsed with 18.2MΩ/cm water prior to filling.
5. Is this solution compatible with organic solvents for specialized applications?
The aqueous nitric acid matrix is not miscible with most organic solvents. For organometallic applications, the standard would require complete evaporation of the acid followed by redissolution in an appropriate organic medium, though this may affect the certified concentration.
