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"SDN:S04::S04271" .
"" .
"nanomolar ammonium system after Jones (1991)"@en .
"accepted"@en .
"Ammonium analysis protocol described in Jones RD (1991) An improved fluorescence method for the determination of nanomolar concentrations of ammonium in natural seawaters. Limnol. Oceanogr. 36:814-819."@en .
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