GB/T 17767.2-2010Determination of organic-inorganic compound fertilizers - Part 2: Total phosphorus content (English PDF)

1 Scope

GB/T 17767 provisions of this part of the organic - inorganic compound Determination of total phosphorus content.

This section applies to a variety of organic fertilizers and chemical fertilizers composed of organic - inorganic compound, also suitable for a variety of solid organic fertilizer

Determination of total phosphorus content.

2 Normative references

The following documents contain provisions which, through reference GB/T 17767 in this section, constitute provisions of this part. For dated reference documents

Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section

Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

Preparation of GB/T 8571 compound fertilizer laboratory samples

HG/T 2843 fertilizer products chemical analysis commonly used in standard titration solution, standard solution, reagent solution and indicator solution

3 Reagents and materials

Warning --- reagent hydrogen peroxide, nitric acid, perchloric acid is corrosive and oxidation resistance, and sulfuric acid solution, a solution of nitric acid and ammonia solution

Corrosive liquid, related operations should be carried out in a fume hood. This standard does not point out all possible security issues, users have a responsibility to

Appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

As used in this section reagent solution and water, in the specifications and method of preparation is not specified, it shall comply with the provisions of HG/T 2843's.

4 instruments and equipment