Detection of phosphide residues in grains

Grain and oil inspection - Determination of phosphide residues in grains - Scope of spectrophotometric method 1- This standard specifies the terms and definitions, principles, reagents and materials, instruments and equipment, samples, sample preparation, operation steps, result calculation and expression of the use of spectrophotometric method to determine phosphide residues in grains. This standard is applicable to the determination of residual phosphide fumigants in grains. The detection limit of this standard method is 0.01 mg/kg. 2 Normative References: The clauses in the following documents become clauses of this standard through reference in this standard. For dated reference documents, all subsequent modification orders (excluding errors) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB 5491 Grain and Oil Inspection Sampling and Sampling Methods GB/T 6682 Specification and Test Methods for Analytical Laboratory Water

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