"Concentration of soluble thorium {soluble_Th CAS 7440-29-1} per unit volume of the atmosphere [aerosol phase] by filtration, water leaching"@en .
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"SDN:P01::AEC084CC" .
"The amount (mass or moles) of the specified chemical entity contained in aerosols within the specified size fraction isolated from a volume of atmosphere using the specified method."@en .
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