nitrification
n . 氮化合,氮饱和,硝化作用
氮化合,氮饱和,硝化作用
nitrification n 1 :
the chemical process in which a nitro group is added to an organic compound (
or substituted for another group in an organic compound )
2 :
the oxidation of ammonium compounds in dead organic material into nitrates and nitrites by soil bacteria (
making nitrogen available to plants )
Nitrification \
Ni `
tri *
fi *
ca "
tion \,
n . [
Cf .
F .
nitrification .
see {
Nitrify }.]
1 . (
Chem .)
(
a )
The act ,
process ,
or result of combining with nitrogen or some of its compounds .
(
b )
The act or process of oxidizing nitrogen or its compounds so as to form nitrous or nitric acid .
[
1913 Webster ]
2 .
A process of oxidation ,
in which nitrogenous vegetable and animal matter in the presence of air ,
moisture ,
and some basic substances ,
as lime or alkali carbonate ,
is converted into nitrates .
[
1913 Webster ]
Note :
The process is going on at all times in porous soils and in water contaminated with nitrogenous matter ,
and is supposed to be due to the presence of a bacteria ,
such as members of the genus {
Azotobacter },
formerly called nitrification ferments .
In former times the process was extensively made use of in the production of saltpeter .
[
1913 Webster PJC ]
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