图共 6个 表共 1
    • 图  1  样品溶液pH对汞-双硫腙络合物吸光度的影响(479.3 nm)

      Figure 1.  Effects of pH on absorbance of Hg-Dithizone complex(479.3 nm)

    • 图  2  络合反应时间对汞-双硫腙络合物吸光度的影响(479.3 nm)

      Figure 2.  Effect of reaction time on absorbance of Hg-Dithizone complex(479.3 nm)

    • 图  3  富集样品溶液体积对汞-双硫腙络合物吸光度的影响(479.3 nm)

      Figure 3.  Effect of sample volume on absorbance of Hg-Dithizone complex(479.3 nm)

    • 图  4  络合反应时间对汞-双硫腙络合物吸光度的影响(479.3 nm)

      Figure 4.  Effect of reaction time on absorbance of Hg-Dithizone complex(479.3 nm)

    • 图  5  富集双硫腙、汞-双硫腙络合物(碱洗/未碱洗)的膜固相光谱图

      Figure 5.  Solid phase spectra of enriched dithizone、Hg-dithizone complex(Alkali wash/without Alkali wash)

    • 图  6  Hg2+浓度(0.5~50 μg/L)与吸光度之间的关系(479.3 nm)

      Figure 6.  Relationship of Hg2+ concentration in solution and absobance in the range of 0.5~50 ug/L(479.3 nm)

    • Sampleρ(Hg2+)addition/
      (μg·L−1)
      ρ(Hg2+)detection/
      (μg·L−1)
      R/%RSD/%
      (n=5)
      ρ(ICP-MS)detection/
      (μg·L−1)
      ρ(ICP-MS)
      detection/%
      River-water
      109.7697.69.688.484.0
      1515.2101.54.0213.791.3
      2020.1100.43.8418.291.0
      Tap-water
      1010.8108.02.068.585.0
      1513.791.32.4012.583.3
      2019.396.56.1918.190.5

      表 1  所建立方法对河水/自来水水样中Hg2+浓度的测定

      Table 1.  Determiantion results for Hg2+ in river/Tap-water samples