Development of analytical methods for determination and elimination of some strobilurin pesticides in environmental samples

Abstract

It explained the nature, importance, and types of pesticides, focusing on strobilurins, their invention, physical properties, chemical structures, their combinations with other pesticides, mode of action, spectrum of activity, toxicity profiles, and elimination from environment. Section B: Literature review This section included analytical methods, found in the literature, and used for determination of different strobilurin pesticides, either alone, or in different combinations, in environmental samples. Part II: Enhanced potentiometric methods for determination of azoxystrobin residues in treated cucumber, orange juice and canned food Section A: Introduction General introduction about materials used as water channels (carbonaceous materials and trehalosomes) and ionophores (cyclodextrin and molecularly imprinted polymers) in fabrication of sensors investigated in this part. Section B: Nano carbon dots water channels for potentiometric determination of azoxystrobin via ionophoric based sensors, and their application in treated cucumber This section dealt with the incorporation of carbon dots (CDs), as a water channel former, in the suggested sensors. On the other hand, cyclodextrin, molecularly imprinted and non-imprinted polymers were used as ionophores. The suggested three sensors were applied for determination of azoxystrobin in cultivated cucumber. Section C: Potentiometric determination of azoxystrobin in orange juice, via trehalosomes-based sensor Trehalosomes were added to the suggested sensor as a water channel former. Trehalosomes offered some vesicular structure rich in phospholipids which engulf lipophilic compounds needed to cross the membrane, like a living cell membrane. This sensor had the advantageous property in acid resistance, thus enabled azoxystrobin determination in citrus fruits.