Maria Lúcia Ribeiro

TL;DR: In this article, a compact revision on the herbicide glyphosate physic-chemistry characteristic mains, including toxicity and valid Brazilian legislation for its use, is presented, along with a detailed discussion of its application in agriculture.

TL;DR: In this paper, the authors present the definitions of the parameters (selectivity, limits of detection and quantification, accuracy, precision,linearity, analytical graphic, sensitivity and ruggedness) considered on analytical methods validation procedures.

TL;DR: Two simple methods were developed to determine 11 pesticides in coconut water, a natural isotonic drink rich in salts, sugars and vitamins consumed by the people and athletes, and no detectable amounts of the pesticides were found in any samples under the conditions described.

TL;DR: Biosensors for determination of carbamates in vegetables based on five different cholinesterase as biorecognition elements and a screen-printed electrode system as an amperometric transducer were developed Measurements were simply performed by dropping solutions (either sample or substrate) directly on the biosensor as discussed by the authors.

TL;DR: It is deducted that the contamination of water resources is predominantly caused by non-point pollution of pesticides used in intensive cash-crop cultures of the Cerrado area, and a continuous monitoring of pesticide concentrations in water resources of this tropical region is necessary to detect the longer term contamination trends and developing health risks.