İlker POLATOĞLU, Yılmaz YÜREKLİ, Suat Bahar BAŞTÜRK

Estimating Solubility of Parathion in Organic Solvents

Organofosfatlı pestisitlerin (OP) sudaki çözünürlükleri sınırlı olduğundan, pestisit kalıntı analizi için ortama organik solvent ilavesi gerekmektedir. Çözünürlük organik çözeltilerin seçiminde önemli bir parametredir. Bu aşamada paratiyon'un (model bir OP olarak) çözünürlüğü, su ve organik çözücü (etanol, metanol, izopropil alkol, aseton ve asetonitril) karışımlarında hesaplanmıştır. Termodinamik katı sıvı denge modeli çözünürlüğün ifade edilmesi için önerilmiştir. Model güvenilir sonuçlar vermiştir ve diğer OP'ın çözünürlüklerinin hesaplanması için kullanılabilir.

Paratiyon'un Organik Çözücülerdeki Çözünürlüğünün Hesaplanması

As the organophosphorus pesticides (OP) is slightly soluble in water, addition of organic solvents is needed for residue analysis. Solubility is a significant parameter for the selection of organic solvents. In this study solubility of parathion (as a model OP) in water organic solvent (methanol, ethanol, isopropyl alcohol, acetone and acetonitrile) mixtures were estimated. Thermodynamic solid liquid equilibrium model is proposed to describe the solubility. The model gave satisfactory results and could be used to estimate the solubility of otherOP.

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