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"Concentration of soluble ammonium {soluble_NH4+ CAS 14798-03-9} per unit volume of the atmosphere [aerosol <1um phase] by filtration, water leaching"@en .
"SDN:P01::AEC021CC" .
"accepted"@en .
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"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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"NH4+_aerosol_H2O_Leaching_<1um" .
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