The aim of this study was to monitor organotin compounds (tributyltin TBT, dibutyltin DBT, monobutyltin MTB) concentrations, in biotic and abiotic marine samples. In particular, samples of sediments, fishes and filter-feeding organisms, collected in the North-Est area of Adriatic Sea were analysed. The Ministerial Decree n°260/2010 sets the environmental quality standard EQS for TBT compounds in marine sediments at 5μg/kg dw. Therefore, analytical methods in compliance with the EQS proposed to protect the aquatic environment and human beings are needed. HPLC-inductively coupled plasma mass spectrometer (HPLC-ICP-MS) is a promising technique to satisfy these requirements. In addition, methods based on HPLC-ICP-MS can significantly simplify sample preparation step avoiding derivatization, moreover they allow for speciation of organotin compounds. In order to evaluate the performance of HPLC-ICP-MS method, the results have to be compared to those obtained from current methodology adopted by national and international protection agencies. In this study, after sample lyophilization and homogenization, the analytical procedure consisted in different sequential steps, such as extraction, derivatisation, clean up and, finally, GC/MS determination.
Contamination of organotin compounds in the Northern Adriatic Sea
Vergine, Giulia;Stevanin Claudia;Sarti Elena;Costa Valentina;Cavazzini Alberto;Pasti Luisa
2018
Abstract
The aim of this study was to monitor organotin compounds (tributyltin TBT, dibutyltin DBT, monobutyltin MTB) concentrations, in biotic and abiotic marine samples. In particular, samples of sediments, fishes and filter-feeding organisms, collected in the North-Est area of Adriatic Sea were analysed. The Ministerial Decree n°260/2010 sets the environmental quality standard EQS for TBT compounds in marine sediments at 5μg/kg dw. Therefore, analytical methods in compliance with the EQS proposed to protect the aquatic environment and human beings are needed. HPLC-inductively coupled plasma mass spectrometer (HPLC-ICP-MS) is a promising technique to satisfy these requirements. In addition, methods based on HPLC-ICP-MS can significantly simplify sample preparation step avoiding derivatization, moreover they allow for speciation of organotin compounds. In order to evaluate the performance of HPLC-ICP-MS method, the results have to be compared to those obtained from current methodology adopted by national and international protection agencies. In this study, after sample lyophilization and homogenization, the analytical procedure consisted in different sequential steps, such as extraction, derivatisation, clean up and, finally, GC/MS determination.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
