GB/T 34438-2017Determination of cadmium in toy materials—Flame atomic absorption spectrometry (English PDF)

1 Scope

This standard specifies the method of flame atomic absorption spectrometry determination of cadmium content in toy materials.

This standard applies to toys in the coating, plastic (except fluorine plastic), natural or synthetic textiles, paper and cardboard, metal materials, cadmium content

Determination.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 602 chemical reagent impurity standard solution preparation

GB/T 6379.2 accuracy of measurement methods and results (accuracy and precision) Part 2. Determination of standard measurement methods repeated

The basic method of sexuality and reproducibility

GB/T 6682 analytical laboratory water specifications and test methods

3 principle

Sample using electric heating plate digestion or microwave digestion. Digestion solution was determined by flame atomic absorption spectrometry at a wavelength of 228.8nm,

External standard method to determine the concentration of cadmium in the solution, calculate the content of cadmium in the sample.

4 Reagents and materials

Unless otherwise noted, all reagents are superior grade pure.