Analysis of polychlorinated biphenyls in transformer oils by automated online coupling reversed phase liquid chromatography-gas chromatography using the through oven transfer adsorption desorption (TOTAD) Interface
| Autor: | Ana Vázquez, Juan C. Andini, Rosa M. Toledano, Carlos Quintero, Jesús Villén, Jose M. Cortés |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
on-line coupling
Transformer oil Health Toxicology and Mutagenesis Analytical chemistry liquid chromatography-gas chromatography Soil Science High-performance liquid chromatography Analytical Chemistry Countercurrent chromatography Environmental Chemistry Sample preparation Waste Management and Disposal TOTAD interface Water Science and Technology Chromatography Chemistry Public Health Environmental and Occupational Health Ciencias Químicas polychlorinated biphenyls Reversed-phase chromatography Pollution Dilution Química Analítica Gas chromatography Chromatography column CIENCIAS NATURALES Y EXACTAS |
| DOI: | 10.1080/03067319.2011.637197 |
| Popis: | An automated method for the direct analysis of polychlorinated biphenyls (PCBs) in transformer oil is presented. The proposed method uses the TOTAD (through oven transfer adsorption desorption) interface for the on-line coupling of reversed phase liquid chromatography and gas chromatography (RPLC-GC). In this fully automated system, the oil is injected directly with no sample pre-treatment step other than dilution with n-propanol and filtration. In the LC step, PCBs are separated from other components of the oils using methanol/water (90:10 v/v) as mobile phase, at a flow rate of 1 mL min. The LC fraction containing the PCBs is automatically transferred to the GC by the TOTAD interface and GC analysis enables the separation of the PCB congeners. The proposed method is compared with two other methods: the European Norm (UNE-EN-61619) and that of the American Society for Testing and Materials (ASTM) (D4059-00). The proposed method practically eliminates the time-consuming sample preparation step and avoids errors caused by sample manipulation. The total PCB concentrations obtained with the three methods are similar. Fil: Cortés, Jose. Universidad de Castilla-La Mancha; España Fil: Andini, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina Fil: Toledano, Rosa. Universidad de Castilla-La Mancha; España Fil: Quintero, Carlos. Repsol Centro de Tecnología; España Fil: Villén, Jesús. Universidad de Castilla-La Mancha; España Fil: Vázquez, Ana. Universidad de Castilla-La Mancha; España |
| Databáze: | OpenAIRE |
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