Analytical Procedure:
The MCE filter is subjected to a sequence of digestion steps using ammonium hydroxide (aqueous ammonia), water, hydrochloric acid, nitric acid, and phosphoric acid. The resulting solution is analyzed by aspiration into the argon stream of an inductively coupled plasma atomic emission spectrometer (ICP-AES).
Related Information: Chemical Sampling - Tungsten (as W) Insoluble Compounds, Tungsten (as W) Soluble Compounds, Cobalt, Metal, Dust & Fume (as Co)
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