氫化物原子熒光光譜法測定牛奶中砷和汞的含量-wenkub
2023-01-23 09:40:37 本頁面
【正文】 ish detailed steps for microwave digestion and ultimately to determine the arsenic and mercury in the two elements for simultaneous determination . The sample is fresh milk from the ministry of agriculture milk and dairy products quality monitoring center .The use of H2O2HNO3 digestion samples,better digestion .In acidic conditions ,arsenic and mercury hydride generated at the same time ,and measure at the same :Recovery of standard addition is 90%103%.Conclusion:The method is sensitive ,easy to operate fast ,accurate and reliable determination of the sample Auricularia arsenic and mercury .Test results are in line with national standards. Keywords: atomic fluresence spectrometry。 Hg 目 錄 前言 ......................................................................................................................................... 1 1 試驗材料 .............................................................................................................................. 1 實驗樣品 ................................................................................................................... 1 實驗試劑 ................................................................................................................... 1 實驗儀器及工作條件 ............................................................................................... 2 2 試驗方法 .............................................................................................................................. 3 樣品預(yù)處理 ............................................................................................................... 3 標(biāo)準(zhǔn)系列制備 ........................................................................................................... 3 測定 ........................................................................................................................... 4 3 試驗結(jié)果 .............................................................................................................................. 4 計算方式 ................................................................................................................... 4 分析報告 ................................................................................................................... 4 4 分析與討論 .............................................................................
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