Rapid determination of phenolic compounds in water samples byalternating-current oscillopolarographic titration
XIAO Jun-ping , WANG Xue-feng , ZHOU Qing-xiang , FAN Xiao-yuan , SU Xian-fa , Bai Hua-hua , DUAN Hai-jing
DOI:
Received July 07, 2006,Revised August 07, 2006, Accepted , Available online
Volume 19,2007,Pages 622-627
- Summary
- References
- Related Articles
A rapid, simple and sensitive method was demonstrated for the determination of phenolic compounds in water samples by alternatingcurrent
oscillopolarographic titration. With the presence of sulfuric acid, phenol could be transferred into a nitroso-compound by
reacting with NaNO2. The titration end-point was obtained by the formation of a sharp cut in the oscillopolarographic with infinitesimal
NaNO2 on double platinum electrodes. The results showed that phenol concentration had an excellent linear relationship over the range
of 4.82 10??6–9.65 10??3 mol/L, the RSD of the proposed method was lower than 1.5%, and the spiked recoveries of three real water
samples were in the range of 95.6%–106.9%.
