Читать книгу X-Ray Fluorescence in Biological Sciences - Группа авторов - Страница 47

The standard tea preparation procedure indicated on the package was reproduced. When brewed, 240 mg of tea leaves were placed in special bakes, poured with 30 ml of distilled water (temperature ~90 °C). After 5–7 minutes, 1 ml of solution was taken. Then, 100 μl of 100 mg/l internal Ga standard was added and thoroughly mixed before 10 μl was applied to a siliconized quartz glass carrier and dried. The measurement time of the sample was five hundred seconds.