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| 1 | Dispersive liquid-liquid microextraction,an effective tool for the determination of synthetic cannabinoids in oral fluid by liquid chromatography-tandem mass spectrometry显示文摘In the present work,dispersive liquid-liquid microextraction(DLLME)was used to extract six synthetic cannabinoids(JWH-018,JWH-019,JWH-073,JWH-200,or WIN 55,225,JWH-250,and AM-694)from oral fluids.A rapid baseline separation of the analytes was achieved on a bidentate octadecyl silica hydride phase(Cogent Bidentate C18;4.6 mm×250 mm,4μm)maintained at 37℃,by eluting in isocratic conditions(water:acetonitrile(25:75,V/V)).Detection was performed using positive electrospray ionization-tandem mass spectrometry.The parameters affecting DLLME(pH and ionic strength of the aqueous phase,type and volume of the extractant and dispersive solvent,vortex and centrifugation time)were optimized for maximizing yields.In particular,using 0.5 mL of oral fluid,acetonitrile(1 mL),was identified as the best option,both as a solvent to precipitate proteins and as a dispersing solvent in the DLLME procedure.To select an extraction solvent,a low transition temperature mixture(LTTM;composed of sesamol and chlorine chloride with a molar ratio of 1:3)and dichloromethane were compared;the latter(100μL)was proved to be a better extractant,with recoveries ranging from 73%to 101%by vortexing for 2 min.The method was validated according to the guidelines of Food and Drug Administration bioanalytical methods:intra-day and inter-day precisions ranged between 4%and 18%depending on the spike level and analyte;limits of detection spanned from 2 to 18 ng/mL;matrixmatched calibration curves were characterized by determination coefficients greater than 0.9914.Finally,the extraction procedure was compared with previous methods and with innovative techniques,presenting superior reliability,rapidity,simplicity,inexpensiveness,and efficiency. | Pierpaolo Tomai Alessandra Gentili Roberta Curini Rossella Gottardo Franco Tagliaro Salvatore Fanali | 2021 | Journal of Pharmaceutical Analysis2021，11，3： | 4 |
| 2 | Monitoring natural and synthetic estrogens at activated sludge sewage treatment plants and in a receiving river water 显示文摘 | Baronti C Curini R D1Ascenzo G | 2000 | Environmental Science & Technology2000，34，24： | 1 |
| 3 | Alumina promoted eyellzation of α-nitrooxime: a new entry to the synthesis of 1,2,5- oxadiazoles N-oxides (furoxans) 显示文摘 | Curini M Epifano F Marcotunio M C | 2000 | Tetrahedron Lett2000，41，4： | 1 |
| 4 | Monitoring natural and synthetic estrogens at activated sludge sewage treatment plants and in a receiving river water显示文摘 | Baronti C Curini R D'Ascenzo G | 2000 | Environ Sci Technol2000，34，24： | 1 |
| 5 | Physical and chemical properties of nanocomposite polymer electrolytes显示文摘 | CURINI R MARTINELLI A | 1999 | J Phys Chem1999，103，10： | 1 |
| 6 | Carbamate synthesis from amines and dimethyl carbonate under ytterbium triflate catalysis 显示文摘 | Curini M Epifano F Maltese F | 2002 | Tetrahedron Letters2002，43，28： | 1 |
| 7 | Ytterbium triflate catalyzed synthesis of β-enaminones 显示文摘 | EPIFANO F GENOVESE S CURINI M | 2007 | Tetrahedron Letters2007，48，15： | 1 |
| 8 | Physical and chemical properties of Nanocomposite polymer electrolytes 显示文摘 | CROCE F CURINI R MARTINELLI A | 1999 | J Phys Chem B1999，103，： | 1 |
| 9 | Monitoring natural and synthetic estrogens at activated sludge sew- age treatment plants and in a receiving river water 显示文摘 | Baronti C Curini R D' Ascenzo G | 2000 | Environmental Science & Technology2000，34，24： | 1 |
| 10 | Carbamate synthesis from amines and dimethyl carbonate under ytterbium triflate catalysis显示文摘 | Francesco Epifano Federica Maltese | 2002 | Tetrahedron Letters2002，43，28： | 1 |
| 11 | A liquid chromatography? mass spectrometry assay for analyzing sulfonamide antibacterials in cattle and fish muscle 显示文摘 | BOGIALLI S CURINI R DI CORCIA A | 2003 | Anal Chem2003，75，8： | 1 |
| 12 | Preparation and deprotection of 1, 1-diacetates(acylals) using zirconi- um sulfophenyl phosphonate as catalyst 显示文摘 | Curini M Epifano F Marcotullio M C | 2002 | Synthetic Commun2002，32，： | 1 |
| 13 | Monitoring Natural and Synthetic Estrogens at Activated Sludge Sewage Treatment Plants and in Areceiving River Water显示文摘 | Baronti C Curini R D'Ascenzo G | 2000 | Environ Sci Technol2000，34，： | 1 |
| 14 | Micro-solid phase extraction coupled with high-performance liquid chromatographytandem mass spectrometry for the determination of stimulants,hallucinogens,ketamine and phencyclidine in oral fluids显示文摘 | Sergi M Compagnone D Curini R | 2010 | Anal Chim Acta2010，675，2： | 1 |
| 15 | Impoundment failure seepage analyses 显示文摘 | Hagerty D J Andrea Curini | 2004 | Environmental & Engineering Geoscience2004，，1： | 1 |
| 16 | Development of a multiresidue method for analyzing herbicide and fungicide residues in bovine milk based on solid-phase extraction and liquid chromatography - tandem mass spectrometry显示文摘 | BOGIALI I S CURINI R CORCIA A D | 2006 | J Chromatogr: A2006，1102，： | 1 |
| 17 | Composition and antifungal activity of two essential oils of hyssop (Hyssopus officinalis L)显示文摘 | FRATEMALE D EPIFANO F CURINI M | 2004 | J Essent Oil Res2004，16，6： | 1 |
| 18 | Monitoring natural and synthetic estrogens at activated sludge sewage treatment plants and in a receiving river water 显示文摘 | BARONTI C CURINI R ASEENZO G D | 2000 | Environ Sci Technol2000，34，24： | 1 |
| 19 | Solid-phase extraction followed by liquid chromatography-mass spectrometry for trace determination of beta-lactam antibiotics in bovine milk显示文摘 | BRUNO F CURINI R DI CORCIA A | 2001 | J Agric Food Chem2001，49，7： | 1 |
| 20 | A simple and sensitive liquid chromatography-mass spectrometry confirmatory method for analyzing sulfonmide antibacterials in milk and egg显示文摘 | Cavaliere C Curini R Corcia A N | 2003 | J Agricul and Food Chem2003，51，： | 1 |
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