Pre-concentration of nitrosamines from aqueous samples by SPE and MEKC
| Autor: | Ronaldo Caramão Garcia, Elina Bastos Caramão, Pedro José Sanches Filho, Kelen Daiane Zanin, Miguel Valcárcel, Ángel Ríos |
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| Jazyk: | portugalština |
| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Química Nova, Volume: 26, Issue: 2, Pages: 193-196, Published: MAR 2003 Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS Química Nova v.26 n.2 2003 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ Química Nova, Vol 26, Iss 2, Pp 193-196 (2003) |
| Popis: | This paper describes the development of a methodology for solid phase extraction (SPE) and pre-concentration of nitrosamines from aqueous samples using granular activated charcoal as stationary phase. micelar electrokinetic capillary Chromatography (MEKC) was used for the separation and identification of the nitrosamines in the extracts. Using a sample with 50 mg l-1 of each nitrosamines standards (dimethylnitrosamine, DMN; diethylnitrosamine, DEN; N-nitrosopyrrolidine, NPYR; N-nitrosopiperidine, NPIP; N-nitrosomorpholine, NMOR), the methodology showed a range of recuperation from 29 to 107% with a linear zone between 10 and 500 mg l-1. The developed methodology can be applicable to the determination of these analytes in different aqueous samples. |
| Databáze: | OpenAIRE |
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