23 research outputs found
Comparison of different modifications on QuEChERS sample preparation method for PAHs determination in black, green, red and white tea
Get PDFA ambientalização curricular de programas de Educação Física em universidades federais do Brasil
Full text linkFast methods for the identification of suitable chemo‐enzymatic treatments of Kraft lignin to obtain aromatic compounds
No full textReview of Functional Properties of Natural Fiber-Reinforced Polymer Composites: Thermal Insulation, Biodegradation and Vibration Damping Properties
No full textLevels of organophosphorus pesticides in medicinal plants commonly consumed in Iran
Get PDF<p>Abstract</p> <p>The frequent occurrence of pesticide residues in herbal materials was indicated by previous studies. In this study, the concentration of some of the organophosphorus pesticides including parathion, malathion, diazinon and pirimiphos methyl in different kinds of medicinal plants were determined. The samples were collected randomly from ten local markets of different areas of Iran. At the detection limit of 0.5 ng g<sup>-1</sup>, parathion and pirimiphos methyl were not detected in any of the samples<sub>.</sub> Some amounts of malathion and diazinon were found in <it>Zataria</it>, <it>Matricaria chamomile</it>, <it>Spearmint</it> and <it>Cumin</it> Seed samples while, the concentrations of target organophosphorus pesticides in <it>Borage</it> samples were below the detection limits of the methods which could be a result of intensive transformation of organophosphorus pesticides by <it>Borage</it>. In addition the organophosphorus pesticides were detected in all of the samples below the maximum residue levels (MRLs) proposed by the international organizations.</p
Environmental education in distance learning in Environmental Engineering at Federal University of São Carlos, Brazil: potentialities and limitations towards a critical techno-scientific education
No full textDevelopment and Application of the Detector-Response-Ratio Method of Identification for a Dual-Detection System. Application of GC with Electron-Capture and Nitrogen–Phosphorus Detection to the Determination of Pesticides in Aqueous Matrices
No full textPreparation of a Sol–Gel Titania Based Coating for HS-SPME of Aliphatic Alcohols from Non-Alcoholic Beer Samples
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Green Chemistry and Environmental Management Systems: Relationships, Synergies, Advantages and Barriers of Joint Implementation at Universities
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