EPA Method 105


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EPA Method 105:
DETERMINATION OF MERCURY IN WASTEWATER TREATMENT PLANT SEWAGE SLUDGES

Summary:
Time-composite sludge samples are withdrawn from the conveyor belt subsequent to dewatering and before incineration or drying. A weighed portion of the sludge is digested in aqua regia and is oxidized by potassium permanganate (KMnO4). Mercury in the digested sample is then measured by the conventional spectrophotometric coldvapor technique.

Scope:
This method is applicable for the determination of total organic and inorganic Hg content in sewage sludges.

Date Issued:
9/25/1996

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Examples:  8260
TO-15

Examples:  Dioxin
Mercury
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