Determination of Organic Germanium and Total Germanium Through Automatic Digestion and Fluorescence Spectrometry
With organic germanium and total germanium as indexes in herbal medicine,and with the prop-erty of GeCl4 low boiling point,the organic germanium and inorganic germanium are separated and ex-tracted by fully automated sample digestion system,and determined by atomic fluorescence spectrome-try.We found that inorganic germanium could be extracted at 50 ℃,vibrating for 40 min in mass fraction of 1％HNO3.In 6 mol/L HCl heated at 100 ℃ for 60 min,the inorganic germanium and organic germa-nium can be separated.The LOD of Ge was 0.16 pg/L,the recoveries of germanium was 92.5％～104.0％,and the RSD was 2.01％～3.77％,which accords with the demand of analysis.
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