[Determination of germanium and selenium in malt powder by GFAAS].
A method for determination of germanium and selenium in malt powder has been developed by graphite furnace atomic absorption spectrometry with L'vov platform. While (Pd+Ni) and Pd were used as matrix modifiers,the ashing temperatures of Ge and Se were increased to 1400 and 1200 degrees C respectively,and the matrix inferences were removed. The characteristic masses are 31 pg Ge and 23pg Se(0.0044 A), the detection limits are 28pg Ge and 62pg Se (3 sigma), the precisions (n = 9) are 3. 7-5.6%(Ge) and 4.3-6.5% (Se) and the recoveries are among 90-105%.
Shu
Y
Y
Chinese National Analytical Center, 510070 Guangzhou.
Mu
D
D
D002523:Edible Grain / Q000737:chemistry*; D005857:Germanium / Q000032:analysis*; D006108:Graphite / Q000737:chemistry*; D057230:Limit of Detection; D011208:Powders; D012643:Selenium / Q000032:analysis*; D013054:Spectrophotometry, Atomic; D013696:Temperature
D011208:Powders; D005857:Germanium; D006108:Graphite; D012643:Selenium