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Mercury

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TECHNICAL DATA SHEET

Price of the test:

$85 per analysis

Acceptable Matrices:

Food Products, Food Ingredients, Beverages, Nutraceuticals

Unacceptable Matrices:

Some classes of compounds are unsuitable for this combustion method as they may pose a safety risk and/or not completely combust for analysis. These compounds include: Pure salt (KCI and NaCl), glycerin and glycols, volatile flavoring agents, filter paper, packaging material, and alcoholic beverages. If you have a question regarding your matrix, please call customer service at 1-800-245-5615.


Limit of Quantitation:

0.111 ppb – 12,000 ppb


Sample Size Requirements:

10 grams


Equipment:

Milestone DMA-80 Direct Mercury Analyzer. Samples are thermally combusted and mercury levels are measured using atomic absorption spectrophotometry.


Reportable Units:

ppb


Turn Around Time:

10 days


Is Rush Available?

Yes


Method Reference:

EPA 7473 "Mercury in Solids and Solutions by Thermal Decomposition, Amalgamation, and Atomoc Absorption Spectrophotometry"


Method Description:

Solid or liquid samples are dried and thermally decomposed in a continuous flow of oxygen and the combustion products are passed over a hot catalyst bed. The remaining decomposition products are carried to a gold amalgamator that selectively traps mercury. After removal of any remaining gases or decomposition products, the amalgamator is rapidly heated to release the mercury in the vapor form. The vaporous mercury is analyzed using atomic absorption spectrophotometry at 245 nm with quantitation as compared to a calibration curve.


Information Required by Submitter:

An estimate of the mercury level and a clear description of the sample matrix is required.