Determination of Total Cadmium (Cd) in Plastics

BS EN 1122: Plastics - Determination of Total Cadmium (Cd) - Wet Decomposition Method (Using ICP-MS)

The intake of Cadmium from the plastic materials we use in our daily lives is harmful to health. The body can perceive cadmium as calcium and accumulate it. Therefore, as a result of high exposure to cadmium, bone weakening and fragile bone structure can be seen.

The BS EN 1122 standard covers test methods for the determination of the total Cadmium (Cd) content in plastics in the range of 10 mg Cd/kg to 3000 mg Cd/kg. BS EN 1122 standard, Wet Decomposition Method Total Cadmium (Cd) Determination is not a suitable method for polyfluorinated plastic materials.

Standard principle; It is based on the wet decomposition of organic compounds and the dissolution of cadmium compounds in a sample. Atomization of a solution in an atomic absorption spectrophotometer flame and measurement of absorbance at a wavelength of 228.8 nm.

As part of the BS EN 1122 standard, Total Cadmium (Cd) Determination is made with 2 different methods.

Method A: Wet separation with a mixture of sulfuric acid, nitric acid and hydrogen peroxide. Determination of Total Cadmium (Cd) in Method A describes the separation in the separation apparatus.

Method B: Wet separation with a mixture of sulfuric acid and hydrogen peroxide. Determination of Total Cadmium (Cd) under Method B describes the separation in a kjeldahl bottle.