Аннотация:Method of mass spectrometry with inductively coupled plasma (ICP-MS) was used to analyzecommercial preparations based on gadolinium and polymer matrices by 64 elements includinguranium and thorium for use in low-background experiments. Analysis showed that the contentof radioactive impurities does not depend from the total chemical purity of the preparations.Recommendations on the choice of materials for creating organo-inorganic composite structuralmaterials are given.