GB/T 24875-2010Determination of lead,cadmium,chromium,mercury contents in animal manure - Inductively Coupled Plasma Mass Spectrometry method (English PDF)

1 Scope

This standard specifies the manure of lead (Pb), cadmium (Cd), chromium (Cr), mercury (Hg) inductively coupled plasma mass spectrometry (ICP-MS) measurement

Setting Method.

This standard applies to the determination of Pb, Cd, Cr, Hg content of the manure sample.

The quantitative limits. Pb, Cd, Cr, Hg of 0.1mg/kg.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

Laboratory use specifications and test methods GB/T 6682 Analysis

3 PRINCIPLE OF THE METHOD

The samples were microwave digestion, the sample solution introduced into the plasma mass spectrometer. For certain measured ion mass to charge ratio, mass signal in response to the intake

Proportional to the number of ions into the mass spectrometer by measuring the mass of the count signal to determine the concentration of elements in the sample. Using the standard curve method count

Operators element content.

4 Reagents and materials

Unless otherwise indicated, used in the analysis confirmed only for the gifted class pure reagents, laboratory water in line with GB/T 6682 in a water

Provisions.

Nitrate 4.1. rho (HNO3) = 65%.