Buscar
Mostrando ítems 1-10 de 164
Agrotóxicos em milho: otimização e validação de método multirresíduo empregando GC-MS/MS
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2013-02-28)
Due to the complexity of its matrix, more efficient methods have been studied
for the determination of pesticide residues in maize. The use of QuEChERS method
coupled to low temperature clean up technique has showed ...
Evaluation Of Dispersive And Cartridge Spe Clean-up Procedures Using The Modified Quechers Method For The Analysis Of Pesticides In Strawberries
(ROYAL SOC CHEMISTRYCAMBRIDGE, 2015)
Microwave-assisted extraction at atmospheric pressure coupled to different clean-up methods for the determination of organophosphorus pesticides in olive and avocado oil
(2009)
An effective extraction method was devised for the determination of organophosphorus pesticides (OPPs) in olive and avocado oil samples, using atmospheric pressure microwave-assisted liquid-liquid extraction (APMAE) and ...
Development and validation of a solid–liquid extraction with low-temperature partitioning method for the determination of fipronil in turtle eggshell
(2022-07-01)
The intense use of fipronil in sugarcane crops in Brazil in regions close to the spawning areas of freshwater turtles may pose a considerable threat to the reproduction of these organisms. Therefore, the development and ...
Diseño e implementación de un prototipo de limpieza por medio de ultrasonido
(2017)
This modern cleaning system has been directed to hospital-medical instrument washing by ultrasound, is an effect created by the action of high frequency acoustic waves, the ultrasound travels through a medium. These waves ...
New knowledge about grinding using MQL simultaneous to cooled air and MQL combined to wheel cleaning jet technique
(Springer, 2020-07-09)
The final quality of mechanical components has been increasingly desired in the industry. This final quality is directly linked to surface roughness, geometric deviations, and mechanical integrity of components subjected ...
Agrotóxicos em óleos comestíveis: avaliação de procedimento de purificação de extrato empregando diferentes adsorventes e validação por UHPLC-MS/MS
(Universidade Federal de Santa MariaBrasilQuímicaUFSMPrograma de Pós-Graduação em QuímicaCentro de Ciências Naturais e Exatas, 2016-12-16)
The goal of this study was to evaluate the efficiency of several adsorbents on fat removal from extracts of edible oil matrices (olive, soya and sunflower) during residue determination of 165 pesticides employing liquid ...
The benefits of ethanol use for hydrogen production in urban transportation
(Pergamon-Elsevier B.V. Ltd, 2009-12-01)
The purpose of this paper is to describe the benefits of sugar cane ethanol in Brazil, appointing the productivity of this type of fuel based on hectares of plantation, its carbon dioxide cycle and the contribution to ...
The benefits of ethanol use for hydrogen production in urban transportation
(Pergamon-Elsevier B.V. Ltd, 2009-12-01)
The purpose of this paper is to describe the benefits of sugar cane ethanol in Brazil, appointing the productivity of this type of fuel based on hectares of plantation, its carbon dioxide cycle and the contribution to ...