Threat to Rio Branco, Boa Vista/RR, by organophosphorus pesticides

ISBN-13: 9786200951922 / Angielski / Miękka / 80 str.

Alex Araújo; Henrique Silva

Opis

The use of pesticides used in the last decades has been growing in geometric progressions, especially the practice of applying these compounds, which today is considered the most widely used agrotoxin in the cultivation of crops, despite being of rapid disintegration, even reaching the groundwater tables of the region, due to soil leaching. The use of methyl parathion, mevinfós, cyanofós were determined. The determination of these organophosphates were found using the concentration through solid phase extraction (SPE) and then injected into a mass-coupled gas chromatograph (CGMS). The physicochemical parameters present worrying indexes, although they are not in catastrophic levels they present numbers that call our attention, to determine the temperature, pH, salinity, electrical conductivity, dissolved oxygen were determined using a multiparameter probe and checked with oximeter, pHmeter, and a conductivimeter, while the color was used the NESSLER 200, and the turbidity an AT 2k turbidimeter.

O autorze

Araújo, Alex
PhD student in Bioprospecting, graduated in Chemistry, Specialist in Pounds and Master in Chemistry. Teacher of Basic Education, Roraima state network. Father of Perfections Alex, Alessa, Alex Filho and Eva Maria.