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Title: Analysis of biocides in molluscs using different extraction methods and liquid chromatography tandem mass spectrometry
Authors: Rocha Diniz, Lia Gracy
Afonso-Olivares, Cristina 
Torres-Padrón, María Esther 
Montesdeoca-Esponda, Sarah 
Guedes-Alonso, Rayco 
Vieira, Eny Maria
Rodrigues dos Santos Franco, Teresa Cristina
Sosa-Ferrera, Zoraida 
Santana-Rodríguez, José Juan 
UNESCO Clasification: 251002 Oceanografía química
Keywords: Antifoulings
Irgarol 1051
Marine pollution
Microwave assisted extraction, et al
Issue Date: 2017
Project: 99999.012700/2013-04 Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
Journal: Current Analytical Chemistry 
Abstract: Background: Antifouling paints are widely used for the prevention of growth and development of fouling organisms (biofouling). Consequently, nowadays they are one of the main sources of marine pollution. Objective: The present study examines and compares two different extraction techniques, for the determination of diuron and irgarol 1051 in shellfish tissues. Method: Microwave assisted extraction and ultrasound extraction, followed by liquid chromatography with tandem mass spectrometry were tested and different parameters for both extraction methods were optimized. Results: The results showed that microwave assisted extraction was the most effective method, presenting recoveries in the range of 51.2 to 69.4\% and 76.0 to 92.8\% for diuron and irgarol 1051, respectively. The precision was evaluated in terms of repeatability for different concentration levels (50, and 500 ng.g(-1) of both analytes), which was lower than 19.1\% (n = 6) in all cases. The applicability of the proposed method was evaluated by the extraction and determination of the target analytes in different mollusc species collected from Spain and Brazil beaches. Conclusion: The proposed method provides good results in terms of sensitivity, extraction efficiencies and precision and it could be employed for future monitoring studies in ecosystems influenced by the port traffic.
ISSN: 1573-4110
DOI: 10.2174/1573411012666161102161606
Source: Current Analytical Chemistry[ISSN 1573-4110],v. 13(5), p. 402-409
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