Abstract：The chromogenic reaction of 2-hydroxy-5-sulfobenzenediazoaminoazobenzene (HSDAA) with mercury was studied. In the presence of Triton X-100 and in a borax-buffer solution of pH 10.30, mercury(Ⅱ) reacted with HSDAA to form a stable orange-red complex with molar radio of 1∶2. The apparent molar absorptivity was 1.67×105·L mol-1·cm-1 with the maximum absorption wavelength of 519 nm. Beer’s law was obeyed in the concentration range of 0-600 μg·L-1 for Hg(Ⅱ). The method was applied to the determination of trace amounts of mercury in water with satisfactory results.
曹小安，陈永亨，林华敏* . 2-羟基-5-磺酸基苯基重氮氨基偶氮苯分光光度法测定痕量汞(Ⅱ) [J]. 光谱学与光谱分析, 2004, 24(04): 474-476.
CAO Xiao-an, CHEN Yong-heng, LIN Hua-min* . Determination of Trace Amounts of Mercury by Spectrophotometric Method with 2-Hydroxy-5-Sulfobenzenediazoaminoazobenzene . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(04): 474-476.
[1] TANG Gin-lin et al(唐金陵等). Chinese J.of Analysis Laboratory(分析试验室), 1999, 18(5): 50. [2] WANG Guang-hui et al(王光辉等). Chinese J.of Analysis Laboratory(分析试验室), 2000, 19(2): 74. [3] PAN Jiao-mai et al(潘教麦等). Physical Testing and Chemical Analysis, Part B: Chemical Analysis(理化检验-化学分册), 1996, 32(5): 276. [4] CAO Xiao-an，CHEN Yong-heng, LIAO Dai-di(曹小安, 陈永亨，廖带娣). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2002, 22(4): 662. [5] CAO Xiao-an et al(曹小安等). J.of Analysis Laboratory(分析试验室), 2001, 20(2): 77.
