Determination of trace aluminum (III) using a novel cerium (IV)-calcein chemiluminescence detection.
A simple, sensitive and selective chemiluminescence (CL) method was developed for the direct determination of aluminum (Al). This method is based on that the weak CL of cerium (IV)-calcein can be greatly enhanced by Al(III). The calibration curve was linear over the range 2.0 x 10(-10) to 4.0 x 10(-8)g mL(-1) with a detection limit of 8 x 10(-11)g mL(-1) (3sigma). The R.S.D. was 2.5% by 11 replicated determinations of 1.0 x 10(-9)g mL(-1) Al(III). The proposed method has been used to determine the concentration of Al(III) in real water samples with satisfactory results. The mechanism of the CL reaction was also discussed.
Nie
Fei
F
School of Chemistry and Material Science, Shaanxi Normal University, South Changan Road 199#, Shaanxi, Xi'an 710062, China.
Lu
Jiuru
J
D000535:Aluminum / Q000032:analysis* / Q000737:chemistry*; D002563:Cerium / Q000737:chemistry*; D005452:Fluoresceins / Q000032:analysis* / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008163:Luminescent Measurements / Q000295:instrumentation* / Q000379:methods*; D013050:Spectrometry, Fluorescence
D005452:Fluoresceins; D002563:Cerium; D000535:Aluminum; C007740:fluorexon