2 documents found, page 1 of 1
Validação de método multirresíduo para determinação de pesticidas em alimentos ...
Queiroz,Sonia C. N.; Ferracini,Vera L.; Rosa,Maria A.This paper presents a practical and rapid method which was validated for simultaneous quantification and confirmation of 29 pesticides in fruits and vegetables using ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The samples were extracted following the method known as QuEChERS. Using the developed chromatographic conditions, the pesticides can be separated in less than 9 min. Tw...
Comportamento do herbicida hexazinone em área de recarga do aqüífero Guarani cu...
Queiroz,Sonia C. N.; Ferracini,Vera L.; Gomes,Marco A. F.; Rosa,Maria A.São Paulo state (Brazil) has an important area of sugarcane production, mainly for obtaining alcohol and sugar, where there is an intensive use of pesticides. An important recharge zone of Guarani aquifer, with supplies water for the local population, is located at Ribeirão Preto city, so the local behavior of pesticides must be investigated. The GUS index was obtained by using the paramenters Koc and half-life...