A kinetic study of the degradation of phosalone in an alkaline medium was undertaken by using a pneumatic stopped-flow system. A rapid semiautomatic method is proposed for determining phosalone. Linear calibration graphs up to 8.0 x 10(-5) M (detection limit = 1.40 x 10(-6) M) were obtained, with a measurement period of only 3.5 s per sample and a relative standard deviation of 1.4%. Several pe...

The efficiency of insecticides with different activity mechanisms in the control of codling moth (Cydia pomonella L.) was examined in three-year field trials, at the locality of Bela Crkva in Serbia. In the control of this pest, chlorantraniliprole and the combination of chlorpyrifos and cypermethrin exhibited the highest level of efficiency (up to 98.8% and 97.6%, respectively). Insect growth ...

A high-performance liquid chromatography with ultraviolet detection (HPLC/UV) methodwhich was used solid-phase extraction for cleanup, was developed for the determination ofAzinphos methyl ,Phosalone, Diazinon and Chlorpyrifos residues in fruits. A full factorialexperimental design was used for development of HPLC condition and evaluation of effect ofthree factors (pH of mobile phase, percent o...

Our knowledge about the effectiveness of constructed wetlands in retaining agricultural nonpoint-source pesticide pollution is limited. A 0.44-ha vegetated wetland built along a tributary of the Lourens River, Western Cape, South Africa, was studied to ascertain the retention, fate, and effects of spray drift-borne azinphos-methyl (AZP). Composite water samples taken at the inlet and outlet dur...

Direct sample introduction (DSI), or "dirty sample injection," was investigated in the determination of 22 diverse pesticide residues in mixed apple, green bean, and carrot extracts by benchtop gas chromatography/tandem mass spectrometry (DSI/GC/MS-MS). The targeted pesticides, some of which were incurred in the samples, included chlorpyrifos, azinphos-methyl, parathion-methyl, diazinon, terbuf...

The codling moth, Cydia pomonella L. (Tortricidae), is a major pest of apples, potentially causing annual losses exceeding USD62 billion globally. Growers have limited options for combatting the moth. Sprays with azinphos-methyl been banned in European Union, Turkey, and USA. To be effective, Bacillus thuringiensis or Carpocapsa must ingested large quantities, fruit damaged before larvae die. M...