Catalytic dynamic spectrofluorimetry determination of trace antimony using new type arsenoxylphenylazo rhodanine.
A precise, simple, new spectrofluorimetry method is proposed for determination of trace antimony which is based on the reaction between potassium periodate and the new type fluorescent reagent 3-o-chlorophenyl-5-(2'- arsenoxylphenylazo) rhodanine (2ClRAAP). The possible mechanism is proposed. The fluorescence intensity is investigated to be sharply enhanced by the oxidation of 3-o-chlorophenyl-5-(2'-arsenoxylphenylazo) rhodanine by potassium periodate with antimony as catalyst in the buffer medium of potassium hydrogen phthalate-sodium hydroxide (pH 5.2). Under the optimum conditions the great increase of fluorescence intensity has a linear relationship against the concentration of antimony in the range of 0.2-10 microg L(-1) with a detection limit of 1.65 x 10(-10) g mL(-1). This proposed method led to the satisfied determination of antimony in environment water.
Yu
Jing-Hua
JH
School of Chemistry and Chemical Engineering, University of Jinan, No. 106, Jiwei Road, Jinan 250022, China.
Dai
Ping
P
Ge
Shen-Guang
SG
Zhu
Yuan-Na
YN
Zhang
Li-Na
LN
Cheng
Xiao-Liang
XL
D000965:Antimony / Q000032:analysis* / Q000737:chemistry; D001152:Arsenicals / Q000138:chemical synthesis / Q000737:chemistry*; D002384:Catalysis; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D012236:Rhodanine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D014867:Water / Q000737:chemistry; D014881:Water Supply
C539725:3-o-chlorophenyl-5-(2'-arsenoxylphenylazo)rhodanine; D001152:Arsenicals; D014867:Water; D012236:Rhodanine; D000965:Antimony