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Publication
Featured researches published by Toma Galaon.
International Symposium "The Environment and the Industry" | 2017
Toma Galaon; Jana Petre; Vasile Iancu; Liliana Cruceru; Marcela Niculescu; Florentina Laura Chiriac; Diana Puiu; Madalina Mihalache
A new sensitive and selective LC-MS/MS method with positive electrospray ionization was developed to detect seven cytostatic drugs and one metabolite from municipal waste water. The method separates the target analytes in only 16 minutes using a Hypersil Gold column (100 x 2.1 mm, 3.0 μm) kept at 20°C and a mobile phase made of aq. 0.2% HCOOH and ACN in the ratio 92/8 (v/v). A low mobile phase flow of 0.2 mL/min was used to increase MS ionization yield and hence method sensitivity. A complex two steps (10%/minute) and two plateau gradient elution program was applied for 12 minutes to achieve analyte separation from matrix and each other with highly efficient peaks. Collision energy, fragmentor and capillary voltages were optimized to increase MS sensitivity. Optimization of LC-MS parameters generated low instrumental LOQs situated in the range 0.1 ÷ 1.0 ng/mL. MS detector response was linear between 1 and 100 ng/mL with R coefficients > 0.997 for all eight target analytes. SPE using Oasis HLB cartridges was employed to concentrate target analytes from water samples with MeOH as elution solvent. Intraday and inter-day precision (RSD %) was situated between 5.4 ÷ 7.2% and 7.3 ÷ 10.8%, respectively. Cytostatics recovery after SPE was good due to internal standard correction with values between 70 ÷ 134%. Overall method LOQs were situated between 0.6 and 5.6 ng/L. The method was tested on four waste water samples from a WWTP plant in Bucharest, but none of the targeted cytostatic drugs were found above detection limit.
Archive | 2016
Toma Galaon; Lucian Constantin; Jana Petre; Luoana Florentina Pascu; Carol Lehr
International Multidisciplinary Scientific GeoConference-SGEM, Geoconference on Science and Technologies in Geology, Ecology, Economics, Education and Legislation, SGEM 2016, vol. I, 2016, pp. 471-478
15th International Multidisciplinary Scientific GeoConference SGEM2015 | 2011
Vasile Iancu; Toma Galaon; Jana Petre; Liliana Cruceru; Luoana Florentina Pascu
International Multidisciplinary Scientific GeoConference-SGEM, Geoconference on Science and Technologies in Geology, Ecology, Economics, Education and Legislation, SGEM 2015, vol. II, 2015, pp. 131-138
Archive | 2016
Raluca Diodiu; Toma Galaon; Elena Bucur; Luoana Florentina Pascu
Journal of Environmental Protection and Ecology | 2016
Toma Galaon; Liliana Cruceru; Jana Petre; Luoana Florentina Pascu; Vasile Iancu; Marcela Niculescu
SIMI 2018 | 2018
Raluca Diodiu; Toma Galaon; Vasile Iancu; Mihaela Petrescu; Mihai Bratu; Valeriu Danciulescu; Andreea Cozea
International Symposium "The Environment and the Industry" | 2017
Jana Petre; Toma Galaon; Vasile Iancu; Marcela Niculescu
International Symposium "The Environment and the Industry" | 2017
Mariana Popescu; Diana Puiu; Madalina Mihalache; Natalita Bordei; Anca Daniela Raiciu; Ionut Nicolae Cristea; Toma Galaon; Luoana Florentina Pascu
International Symposium "The Environment and the Industry" | 2016
Florentina Laura Chiriac; Toma Galaon; Liliana Cruceru
Archive | 2015
Raluca Diodiu; Elena Bucur; Toma Galaon; Luoana Florentina Pascu
