Samples are prepared by microwave closed vessel digestion with nitric acid. Solutions are infused into an ICP OES and quantified based on an external standard calibration curve.
Some classes of compounds are unsuitable for closed vessel microwave digestion as they are highly reactive with nitric acid and other oxidizers which may become nitrated and potentially explosive. These include animal fat (lard), glycerin and glycols, volatile flavoring agents, filter paper, packaging material, and alcoholic beverages.
If you have a question regarding your matrix, please contact us at +1 (800) 245-5615.
1 – 3 mg/100g
Limit of Quantitation (LOQ) is dependent on the individual metal.
Contact us to review metal technical datasheets for LOQ specifications.
Inductively Coupled Plasma – Optical Emission Spectroscopy (ICP – OES)
Please provide estimates if available. For vitamin mixes, please include vitamin estimates as well.