TY - JOUR
T1 - Chemometric optimization of an extraction procedure using tartaric acid for butyltin compounds from sediment samples by GC-PFPD
AU - Bravo, Manuel A.
AU - Flores, Marcos
AU - Parra, Sonnia
AU - Quiroz, Waldo
AU - Maxwell, Paulette
AU - Mester, Zoltán
N1 - Publisher Copyright:
© 2015, Sociedad Chilena de Quimica. All rights reserved.
PY - 2015/3/1
Y1 - 2015/3/1
N2 - In this study a simple extraction procedure was developed to minimize the sulfur interferences on the determination of butyltin in sediment samples based on extraction with tartaric acid solution. The optimal conditions were determined using an experimental design methodology and these were achieved using a solution of tartaric acid (0.5 M) with methanol (30% v/v) for 12 hours in an orbital shaker. This protocol could be followed by a liquid-liquid extraction and this organic phase can be analyzed directly by gas chromatography with pulsed flame photometric detection (GC-PFPD) without any further cleanup due to interferences from elemental sulfur were completely eliminated. The accuracy of the procedure was verified analyzing two reference materials (CRM) (BCR-646, freshwater sediment and PACS-2, marine sediment) and comparing the results to the certified values, the optimized method produced satisfactory results certified values in the CRMs. Finally, harbour sediment samples were analyzed in order to evaluate the suitability of the method for organotin control in complex environmental samples containing high concentrations of sulfur compounds.
AB - In this study a simple extraction procedure was developed to minimize the sulfur interferences on the determination of butyltin in sediment samples based on extraction with tartaric acid solution. The optimal conditions were determined using an experimental design methodology and these were achieved using a solution of tartaric acid (0.5 M) with methanol (30% v/v) for 12 hours in an orbital shaker. This protocol could be followed by a liquid-liquid extraction and this organic phase can be analyzed directly by gas chromatography with pulsed flame photometric detection (GC-PFPD) without any further cleanup due to interferences from elemental sulfur were completely eliminated. The accuracy of the procedure was verified analyzing two reference materials (CRM) (BCR-646, freshwater sediment and PACS-2, marine sediment) and comparing the results to the certified values, the optimized method produced satisfactory results certified values in the CRMs. Finally, harbour sediment samples were analyzed in order to evaluate the suitability of the method for organotin control in complex environmental samples containing high concentrations of sulfur compounds.
KW - Butyltin extraction
KW - Experimental design
KW - Photometric pulsed flame photometric detection (PFPD)
KW - Sulfur interferences
UR - http://www.scopus.com/inward/record.url?scp=84934873271&partnerID=8YFLogxK
U2 - 10.4067/S0717-97072015000100006
DO - 10.4067/S0717-97072015000100006
M3 - Article
AN - SCOPUS:84934873271
VL - 60
SP - 2803
EP - 2806
JO - Journal of the Chilean Chemical Society
JF - Journal of the Chilean Chemical Society
SN - 0717-9324
IS - 1
ER -