Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10216/103129
Autor(es): | Mónica S. F. Santos Luís M. Madeira Arminda Alves |
Título: | Paraquat quantification in deposits from drinking water networks |
Data de publicação: | 2014 |
Resumo: | The aim of this work was to develop an expeditious analytical methodology to evaluate the paraquat (PQ) contamination level in deposits from drinking water networks. To the best of our knowledge, no other study has focused on this matter, which is of crucial importance, for instance, to obtain a fast response after a suspicion of contamination (emergency situation). Three deposits representative of those typically found in drinking water networks were used: two iron-based - S2 and S3, and a calcium rich one - S4. The analytical method consists of an easy and fast extraction step, using a saturated ammonium chloride solution, followed by direct injection in a high performance liquid chromatograph with a diode array detector (HPLC-DAD). A matrix-matched calibration was performed for paraquat, in the range of 5 to 193 mu gPQ per g deposit, and a limit of detection of 0.1 mu gPQ per g deposit was reached. The good percentages of recovery (90-101% on average) and the tow relative standard deviations observed for the PQ-S3 system (3, 4 and 2% for 20, 80 and 160 mu gPQ per g deposit, respectively) enable a reliable quantification of paraquat, even at the lowest contamination levels. The developed analytical methodology can also be extended for diquat and also proved to be suitable for paraquat quantification in other types of deposits. |
Assunto: | Ciências da engenharia e tecnologias Engineering and technology |
Áreas do conhecimento: | Ciências da engenharia e tecnologias Engineering and technology |
URI: | https://hdl.handle.net/10216/103129 |
Informação Relacionada: | info:eu-repo/grantAgreement/COMISSÃO EUROPEIA/7.º Programa-Quadro de IDT/217976 /Security and decontamination of drinking water distribution systems following a deliberate contamination /SECUREAU info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e a Tecnologia/Projectos de I&DT em Todos os Domínios Científicos/PTDC/AAC-AMB/101687/2008/Segurança química em sistemas de abastecimento de água/ACQUASAFE |
Tipo de Documento: | Artigo em Revista Científica Internacional |
Condições de Acesso: | restrictedAccess |
Aparece nas coleções: | FEUP - Artigo em Revista Científica Internacional |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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93805.pdf Restricted Access | Artigo original publicado | 693.39 kB | Adobe PDF | Request a copy from the Author(s) |
93805.1.pdf | Post-Print version | 299.95 kB | Adobe PDF | Ver/Abrir |
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