SPECTROPHOTOMETRIC DETERMINATION OF CADMIUM BY THE CHROMOGENIC REAGENT 2-PYRIDINEDIAZOAMINOAZOBENZENE IN THE PRESENCE OF TRITON X-100

Authors
ZHU XR WANG CC CHEN J JIANG WQ JIN G
Citation
Xr. Zhu et al., SPECTROPHOTOMETRIC DETERMINATION OF CADMIUM BY THE CHROMOGENIC REAGENT 2-PYRIDINEDIAZOAMINOAZOBENZENE IN THE PRESENCE OF TRITON X-100, Analyst, 120(12), 1995, pp. 2853-2856
Citations number
15
Categorie Soggetti
Chemistry Analytical
Journal title
Analyst → ACNP
ISSN journal
00032654
Volume
120
Issue
12
Year of publication
1995
Pages
2853 - 2856
Database
ISI
SICI code
0003-2654(1995)120:12<2853:SDOCBT>2.0.ZU;2-6
Abstract
A highly sensitive spectrophotometric method for determination of cadm ium by the chromogenic reagent 2-pyridinediazoaminoazobenzene (Cadion Py) has been developed, In the presence of Triton X-100 and NH3-NH4Cl buffer solution, the optimum conditions for colour reaction of cadmium with Cadion Py, the molar absorptivity of which is 1.92 x 10(5) l mol (-1) cm(-1) at 530 nm, are studied, Elimination of interfering ions at ten-fold concentration is achieved by adding a mixed masking agent, T race amounts of cadmium in water or waste water samples has been satis factorily determined by the method.