Quantitation of valproic acid in pharmaceutical preparations using dispersive liquid-liquid microextraction followed by gas chromatography-flame ionization detection without prior derivatization

Quantitation of mononitrotoluenes in aqu

Quantitation of mononitrotoluenes in aquatic environment using dispersive liquid–liquid microextraction followed by gas chromatography–flame ionization detection

✍ Hamid Reza Sobhi; Amir Kashtiaray; Hadi Farahani; Majid Javaheri; Mohammad Reza 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 546 KB

Simultaneous derivatization and dispersi

Simultaneous derivatization and dispersive liquid–liquid microextraction of anilines in different samples followed by gas chromatography–flame ionization detection

✍ Mir Ali Farajzadeh; Nina Nouri 📂 Article 📅 2012 🏛 Elsevier Science 🌐 English ⚖ 606 KB

Determination of phthalate esters in cow

Determination of phthalate esters in cow milk samples using dispersive liquid-liquid microextraction coupled with gas chromatography followed by flame ionization and mass spectrometric detection

✍ Mir Ali Farajzadeh; Djavanshir Djozan; Mohammad Reza; Afshar Mogaddam; Jamal Nor 📂 Article 📅 2012 🏛 John Wiley and Sons 🌐 English ⚖ 589 KB

Ultra-preconcentration and determination

Ultra-preconcentration and determination of thirteen organophosphorus pesticides in water samples using solid-phase extraction followed by dispersive liquid–liquid microextraction and gas chromatography with flame photometric detection

✍ Soheila Samadi; Hassan Sereshti; Yaghoub Assadi 📂 Article 📅 2012 🏛 Elsevier Science 🌐 English ⚖ 277 KB

Use of a capillary tube for collecting a

Use of a capillary tube for collecting an extraction solvent lighter than water after dispersive liquid–liquid microextraction and its application in the determination of parabens in different samples by gas chromatography—Flame ionization detection

✍ M.A. Farajzadeh; Dj. Djozan; R. Fazeli Bakhtiyari 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 886 KB

Use of a capillary tube for collecting a

Use of a capillary tube for collecting an extraction solvent lighter than water after dispersive liquid–liquid microextraction and its application in the determination of parabens in different samples by gas chromatography—Flame ionization detection

✍ M.A. Farajzadeh; Dj. Djozan; R. Fazeli Bakhtiyari 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 886 KB

In this study a new dispersive liquid–liquid microextraction (DLLME) method is presented on the basis of a safe organic solvent, octanol, which is lighter than water. The proposed method is used for the extraction and pre-concentration of some preservatives including methyl paraben (Mep), ethyl para