- 作者：Miguel del Nogal S谩nchez ; Patricia Mart铆n Santos ; Cristina P茅rez Sapp贸 ; Jos茅 Luis P茅rez Pav贸n ; Bernardo Moreno Cordero
- 关键词：Aromatic amines ; Microextraction by packed sorbent ; Salting-out-assisted liquid&ndash ; liquid extraction ; Mass spectrometry
- 刊名：Talanta
- 出版年：15 February, 2014
- 年：2014
- 卷：119
- 期：Complete
- 页码：375-384
- 全文大小：733 K
Two different extraction techniques for the determination of aromatic amines formed from azo dyes in textiles in combination with gas chromatography-mass spectrometry (GC-MS) are described. The first one is based on microextraction by packed sorbent (MEPS) and the other approach involves salting-out-assisted liquid-liquid extraction (SALLE). The influence of several parameters on the efficiency of the extraction using MEPS (sorbent material, sample volume, elution solvent, elution volume and washing steps, among others) and SALLE (extraction volume and amount of salt) were investigated. In addition, chromatographic separation was optimized and quadrupole mass spectrometry was evaluated using the synchronous SIM/scan data acquisition mode. The repeatability (n=8, S/N=3) of the methods, calculated as the relative standard deviation (RSD) was below 15 and 11% for all compounds when MEPS and SALLE were used, respectively.
Standard additions procedure was used to quantify the aromatic amines in the textil samples. The detection limits in the samples for both methods were lower than the maximum value allowed by legislation. The results obtained in the analysis of textiles revealed the presence of o-anisidine, p-chloroaniline, 4-chloro-o-toluidine, 2-naphthylamine and 3,3鈥?dimethoxybenzidine in some of them.