35a
500 D 01/2012
4.3 NANOCOLOR
®
NanOx N
for oxidative decomposition of
total
nitrogen
NanOx N: NanOx decomposition reagent and NanOx compensation reagent
Principle: Oxidation of all inorganic and organic nitrogen-containing substances
to form nitrate. Residues of peroxide which remain after oxidation and oxidised
chromium(VI), which interfere with the determination of nitrate, are eliminated by a
compensation reagent.
Applications:
Decomposition in a heating block: the decomposition in a heating block at
100–120 °C features a lower oxidation potential than microwave decomposition.
For mainly municipal waste waters this method can be used if the matrix is constant
over a longer time period. In regular intervals the applicability of the method should
be checked against a reference procedure (e.g. microwave decomposition). For
nitrogen compounds, which are difficult to decompose, the recovery from industrial
waste waters can be incomplete or not at all possible.
Pressurised microwave decomposition: this method features the advantages of
easy handling and considerable time-saving.
Refer to test 0-83/0-88/0-92 for accessories, reagents and working procedures.
