Determination of trace amounts of mercury by spectrophotometric method with 2-hydroxy-5-sulfobenzenediazoaminoazobenzene

作者：Cao, XA^*; Chen, YH; Lin, HM

来源：Spectroscopy and Spectral Analysis, 2004, 24(4): 474-476.

• spectrophotometry
• 2-hydroxy-5-sulfobenzenediazoaminoazobenzene
• mercury

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 X 10(5) (.) 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 mug(.)L(-1) for Hg(II). The method was applied to the determination of trace amounts of mercury in water with satisfactory results.

• 出版日期2004-4
• 单位广州大学