Synthesis of nitrobenzothiazolyldiazoamino- p- nitrophenyl and its colour reaction with mercury
Received date: 2000-08-29
Online published: 2010-10-01
The synthesis of a new reagent nitrobenzothiazolyldiazoamino- p- nitrophenyl(NBT DAPNP) and its colour formation reaction with mercury are reported. In weak alkaline medium and in the presence of T riton X-100, mercury reacts with NBTDAPNP to form an orange- yellow complex which has component ratio of 1:2.The maxium absorption of the complex is at 450 nm and 530 nm, determination by dual wavelength spectrophotometry, and apparent molar absorptivity is 2. 18×105L/ (mol.cm). Beer's law is obeyed for mercury in the range of 0~ 12μg/ 25 mL. The interference of various ions has been studied and the method has been used for the determination of micro amounts of mercury in wastewater with satisfactory results.
XIA Xin quan, DING Hai jun, CUI Wei . Synthesis of nitrobenzothiazolyldiazoamino- p- nitrophenyl and its colour reaction with mercury[J]. Industrial Water Treatment, 2001 , 21(3) : 28 -30 . DOI: 11894/1005-829x.2001.21(3).28
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