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Information about methods of analysis for Lead (Pb) in the NGS

      Distribution maps  
      (Click on thumbnail to enlarge)  
Method Quality Notes Lower 48 Alaska Hawai`i Statistics
ICP10UnknownPartial dissolution methodShow field values mapped on the conterminous (lower 48) statesShow field values mapped on Alaska Show statistics for this field
ICP40GoodMay be problems below 20 ppmShow field values mapped on the conterminous (lower 48) statesShow field values mapped on AlaskaShow field values mapped on Hawai`iShow statistics for this field
NURE methodsVariable Show field values mapped on the conterminous (lower 48) statesShow field values mapped on Alaska Show statistics for this field