Influence of ultrasonic waves on phosphate determination by the molybdenum blue method

dc.creator	Korn, Mauro
dc.creator	Machado Primo, Pedro
dc.creator	Sousa, Clarivaldo Santos de
dc.creator	Korn, Mauro
dc.creator	Machado Primo, Pedro
dc.creator	Sousa, Clarivaldo Santos de
dc.date.accessioned	2022-10-07T15:54:22Z
dc.date.available	2022-10-07T15:54:22Z
dc.date.issued	2002
dc.identifier	0026-265X
dc.identifier	http://www.repositorio.ufba.br/ri/handle/ri/7438
dc.identifier	v. 73, n. 3
dc.identifier.uri	http://repositorioslatinoamericanos.uchile.cl/handle/2250/4006219
dc.description.abstract	Polymeric bonds between molybdate monomeric ions in acidic medium were broken by 40 kHz ultrasonic wave irradiation, improving the reaction kinetics with o-phosphate in the presence of ascorbic acid. It could be assumed that the ultrasonic wave irradiation of molybdate solution in acidic medium during 1.0 min was sufficient to increase the rate of the molybdenum blue formation. The approach was applied to the o-phosphate determination in natural waters. Precise results were obtained in the range from 0.05 to 0.50 μg ml−1 (r=0.9994; N=6), and the detection limit was estimated as 0.027 μg ml−1 PPO4. Advantages over the classical analogous procedure are emphasised.
dc.language	en
dc.source	http://dx.doi.org/10.1016/S0026-265X(02)00086-3
dc.subject	o-Phosphate determination
dc.subject	Ultrasonic waves irradiation
dc.subject	Molybdenum blue method
dc.title	Influence of ultrasonic waves on phosphate determination by the molybdenum blue method
dc.type	Artigo de Periódico