Geochemical survey samples—Determination of gold, bismuth and molybdenum—chemical spectroscopy
March 11 09:21:50, 2021
Individual Eyelashes,Natural Looking Fake Eyelashes,5D Mink Eyelashes,Volume Eyelash Extensions Shijiazhuang HuangJia Trading Co., Ltd , https://www.hj-cosmetic.comUsing an AC arc as the excitation source, a one-meter plane grating spectrograph. After the sample is decomposed by aqua regia, under certain acidity medium, activated carbon and tannin auxiliary adsorbent are added, so that gold adsorption and bismuth and molybdenum are also quantitatively adsorbed. Using the strong elution performance of ammonium bifluoride to bismuth and molybdenum, the sample is decomposed once, adsorbed and enriched twice, and gold, bismuth and molybdenum are simultaneously determined.