1 Scope
This standard specifies determination method of content of mercury, arsenic, cadmium, lead and chromium in the fertilizer.
This standard is applicable to the determination of content of mercury, arsenic, cadmium, lead and chromium.
Appendix A of this standard specifies test methods for simultaneous determination of mercury and arsenic in liquid or solid fertilizer, which are applicable to samples with concentration difference not greater than 1,000 times.
Appendix B of this standard specifies test methods for simultaneous determination of cadmium, lead, chromium content in liquid or solid fertilizers.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment) applies.
GB/T 7686 Chemical Products for Industrial Use - General Method for the Determination of Arsenic
GB/T 8170 Rules of Rounding Off for Numerical Values & Expression and Judgment of Limiting Values
HG/T 2843 Chemical Fertilizer Products Standard Volumetric, Standard, Reagent and Indicator Solutions for Chemical Analysis
NY/T 887 Density Testing of Liquid Fertilizer
3 Determination of Mercury Content - Atomic Fluorescence Spectrometry
Foreword I
1 Scope
2 Normative References
3 Determination of Mercury Content - Atomic Fluorescence Spectrometry
4 Determination of Arsenic Content
5 Determination of Cadmium Content
6 Determination of Lead Content
7 Determination of Chromium Content
Appendix A (Normative) Simultaneous Determination of Mercury and Arsenic in Fertilizer - Atomic Fluorescence Spectroscopy
Appendix B (Normative) Determination of Cadmium, Lead and Chromium Content in Fertilizer - Plasma Emission Spectroscopy
