A novel chemiluminescent method for determination of phloroglucinol.
It was found that the inhibition and enhancement by phloroglucinol of the chemiluminescence from the luminol-K3Fe(CN)6 system were dependent on the pH of luminol solution and the concentration of phloroglucinol. In Na2CO(3)-NaHCO3 buffer, phloroglucinol exhibited strong chemiluminescent enhancement at pH 9.4. On this basis, a flow injection method was developed for the determination of phloroglucinol. The method was simple, rapid, convenient and sensitive, with a detection limit of 2.0 x 10(-9) mol/L. It is effective for determining phloroglucinol in the range of 1.0 x 10(-5)-5.0 x 10(-9) mol/L. The relative standard deviation is 1.3% within one day and 3.2% between days for the determination of 5.0 x 10(-7) mol/L phloroglucinol. The method has been successfully used to determine phloroglucinol in environmental water, with satisfactory results.
Cui
Hua
H
Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China. hcui@ustc.edu.cn
Xie
Cheng-Gen
CG
Lai
Chun-Ze
CZ
D017022:Flow Injection Analysis / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D008163:Luminescent Measurements; D008165:Luminol / Q000737:chemistry; D010696:Phloroglucinol / Q000032:analysis*; D014873:Water Pollutants / Q000032:analysis
D014873:Water Pollutants; D008165:Luminol; D010696:Phloroglucinol