氧化铁颜料中微量元素的测试技术

Measure Technology of Microelements in Ferric Oxide Pigments

采用原子吸收分光光度法,研究在氧化铁颜料中测定微量元素铅和镉的实验条件;使用浓盐酸直接分解氧化铁颜料样品,甲基异丁基酮对样品进行萃取,从而消除高浓度铁离子在原子吸收分光光谱测试中对铅和镉含量的干扰。结果表明:采用该测试方法,样品的溶解速度快,空白值低,具有较高的准确度和精密度。

The test conditions of atomic adsorption spectrometry method which was used to determine the element content of lead and cadmium in ferric oxide pigments were researched. The samples were dissolved with hydrochloric acid. Then the methyl isobutyl ketone was used to extract the samples in order to eliminate the interference of high concentrations of iron ions on the test of lead and cadmium content in atomic adsorption spectrometry method. The results showed that the samples solved quickly and the blank value of test was low. This method was of high accuracy and precision in element detection for pigments