A rapid and simple microwave-assisted digestion procedure for spectrophotometric determination of XXXX photocatalyst on activated @entity505 .

@entity8316 @entity273 @entity6701 @entity505 @entity3759
Deposition of @entity6701 ( @entity3759 ) on activated @entity505 (AC) surface has been widely utilized for the production of @entity3759 /AC photocatalyst, which can be used in photo-degradation of pollutants. In this work, a fast and simple digestion procedure has been developed for the spectrophotometric quantitative analysis of @entity3759 in @entity3759 /AC photocatalyst. Microwave-assisted digestion was used in the procedure. The microwave-digestion procedure was optimized using the single-variable method. Variables optimized included time of ashing, effective digestion time, volume and concentration of @entity8316 , effect of adding a digestion catalyst, effect of sample pulverizing and on-off time cycle of the microwave. The analysis was completed spectrophotometrically after addition of @entity273 to the digested solution. Procedure precision and accuracy was tested by application to photocatalyst samples containing known amounts of @entity3759 , and compared with previously published spectrophotometric procedures. The proposed microwave procedure was capable of recovering 98.4-101.1% of @entity3759 in the catalyst in less than 10min, without the need for sample ashing. Analytical precision is 1.42-2.39% relative standard deviation (R.S.D.). In terms of accuracy and precision, the proposed microwave procedure was comparable with other procedures, but the proposed microwave procedure was superior in terms of shorter procedure duration.
