A sensitive inhibition chemiluminescence method for the determination of trace tannic acid using the reaction of luminol-hydrogen peroxide catalysed by tetrasulphonated manganese phthalocyanine.
A novel CL method for the determination of tannic acid (TA) was established based on TA inhibition of the chemiluminescence (CL) emission of the luminol-hydrogen peroxide CL system catalysed by tetrasulphonated manganese phthalocyanine (MnTSPc) under alkaline conditions. The peak height is proportional to the natural logarithm of concentration of TA in the range 1.0 x 10(-7)-3.0 x 10(-10) mol/L with a detection limit of 5.6 x 10(-11) mol/L and the relative standard deviation was 2.5% for the determination of 1.0 x 10(-8) mol/L TA (n = 11). The proposed method has been successfully applied to the determination of TA in Chinese gall and industrial wastewater.
Yang
Ping
P
Anhui Key Laboratory of Functional Molecular Solids, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 24100, People's Republic of China.
Li
Yongxin
Y
Wang
Po
P
Wang
Lun
L
D002384:Catalysis; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D017022:Flow Injection Analysis; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007211:Indoles / Q000737:chemistry*; D007220:Industrial Waste; D008163:Luminescent Measurements / Q000379:methods*; D008165:Luminol / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013634:Tannins / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis
D004365:Drugs, Chinese Herbal; D007211:Indoles; D007220:Industrial Waste; D009942:Organometallic Compounds; D013634:Tannins; D014874:Water Pollutants, Chemical; D008165:Luminol; C052739:manganese tetrasulfophthalocyanine; D006861:Hydrogen Peroxide