期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 384, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2019.121374
关键词
MIP; Textile dye; Acid violet analysis; Dispersive solid phase extraction
资金
- Brazilian National Council for Scientific and Technological Development (CNPq) [306650/2016-9, 465571/2014-0]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo -Brazil (FAPESP) [2014/50945-4, 2014/25264-3]
- Programa Nacional de Innovacidin para Competitividad y Productividad del Peru (InnovatePeru-ECIP-2015) [Convenio 513]
- Fondo Nacional de Desarrollo Cientifico, Tecnoldgico y de Innovacidn Tecnologica del Peru (2015-FONDECYT) [Convenio 237]
A molecularly imprinted polymer (MIP) was developed for the determination of acid violet 19 (AV19) dye. The MIP was synthesized by polymerization using 1-vinyl imidazole (functional monomer) and 2,2'-azobis(2-methylpropionitrile) as the radical initiator. The functional monomer was previously selected by computational simulations. The MIP adsorption data could be fitted using the Langmuir model obtained a Q(m) value of 6.93 mg g(-1) and 2.84 mg g(-1) for the corresponding non-imprinted polymer (NIP) and the process followed pseudo-second-order kinetics (k(2) 0.2416 mg g(-1) min(-1) MIP). The BET specific surface areas were 229.6 m(2) g(-1) and 28.6 m(2) g(-1), to MIP and NIP, respectively. Analyses showed that the material provided excellent selectivity towards acid violet 19 (AV19) when compared to other analytes including Acid Violet 17 (AV17), Tartrazine (TZ), Acid Red 14 (AR14), Patent blue-VF (PBV), Sunset yellow FCF (SY) and Acid Red 1 (AR1). The calculated K-d value for the MIP was 0.116 L g(-1) and the imprinting factor was 2.89. This alternative and effective material for the enrichment, extraction, and determination of acid violet 19 presents in complex real samples was applied using two different rivers water and industrial effluent, with excellent recoveries values ranging between 85% up to 99%.
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