ISSN:
1436-5073
Keywords:
o-hydroxybenzenediazoaminoazobenzene
;
cadmium determination
;
spectrophotometry
;
first-derivative spectrophotometry
;
waste water
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The synthesis ofo-hydroxybenzenediazoaminoazobenzene (HDAA) is described. Cadmium forms with HDAA in the presence of Triton X-100 a 1∶3 complex, which gives a maximum absorption at 520nm with an apparent molar absorptivity of 1.97 × 1051 · mol−1 · cm−1 in pH 10 borax buffer solution and 1.52 × 1051 · mol−1 · cm−1 in ammoniacal medium. In both media, Beer's law is followed in the range of 0 –10 μg of cadmium in 25ml of solution and the coefficients of variation do not exceed 1.5%. A derivative method has been employed to determine cadmium in certain waste water samples without separation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01242253
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