Can soil samples be "diluted" to test for higher Total Petroleum Hydrocarbon (TPH) concentrations in method 10050?

Document ID

Document ID TE5917

Published Date

Published Date 10/22/2019
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Question
Can soil samples be "diluted" to test for higher Total Petroleum Hydrocarbon (TPH) concentrations in method 10050?
Summary
Soil dilutions in method 10050 for TPH.
Answer
In method 10050, soil samples can be "diluted" by weighing out less soil sample at the beginning of the procedure.

For example, the procedure asks for 10 g of soil sample, weighing out 1 g instead, would result in a "dilution factor" of 10.

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