Ammonia and Total Kjeldahl Nitrogen
Ammonia and Total Kjeldahl Nitrogen
Ammonia and Total Kjeldahl Nitrogen
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Interferences• Many interferences: Calcium, Magnesium, H2S,Turbidity – needs preliminary distillation.• Alkaline citrate solution will complex cations <strong>and</strong>keep them from ppt as hydroxides• Preliminary distillation will help reduce turbidity• Sulfide can be eliminated by acidification <strong>and</strong>vigorous aeration to remove as H2S.
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