2 documents found, page 1 of 1
Determination of Target Pesticide Residues in Tropical Fruits Employing Matrix ...
Freitas,Silvia S.; Serafim,Felipe A. T.; Lanças,Fernando M.A simple method based on matrix solid-phase dispersion (MSPD) extraction and gas chromatography with electron-capture detection (GC-ECD) is employed to determine pesticide residues in the following tropical fruits: banana, mango, melon, papaya and pineapple. In the MSPD proposed method, C18, silica gel and ethyl acetate presented the best results in the extraction, clean-up and elution steps, respectively. Spik...
Decomposition Dynamics of Typha angustifolia under Aerobic Conditions
Oliveira,Caroline S.; Alcantara,Glaucia B.; Lião,Luciano M.; Mesquita,Glenda M.; Freitas,Silvia S.; Petacci,FernandoThe study of the Typha species has gained attention in tropical areas due to their rapid growth, nutrient release, and contribution to detritus in lakes. Analysis of the degradation of Typha angustifolia has shown that the first stage of decomposition is marked primarily by the release of soluble compounds, indicating that microorganisms have a minor influence at this stage. In subsequent stages, microorganisms...