.
.
.
.
.
.
.
.
.
"Concentration of ammonium {NH4+ CAS 14798-03-9} per unit volume of the surface ice [dissolved plus reactive particulate .
"SDN:P01::ICNHXX01" .
"accepted"@en .
.
"NH4_ice_ .
.
.
.
"Amount (quantity or mass) of the specified analyte in a unit volume of a melted ice sample from anywhere on the Earth's surface filtered through GF/F."@en .
.
.
.
.
.
.
.