Direct immersion single drop micro-extraction method for multi-class pesticides analysis in mango using GC-MS.
Food Chem
; 237: 30-38, 2017 Dec 15.
Article
em En
| MEDLINE
| ID: mdl-28764000
ABSTRACT
Due the negative effects of pesticides on environment and human health, more efficient and environmentally friendly methods are needed. In this sense, a simple, fast, free from memory effects and economical direct-immersion single drop micro-extraction (SDME) method and GC-MS for multi-class pesticides determination in mango samples was developed. Sample pre-treatment using ultrasound-assisted solvent extraction and factors affecting the SDME procedure (extractant solvent, drop volume, stirring rate, ionic strength, time, pH and temperature) were optimized using factorial experimental design. This method presented high sensitive (LOD 0.14-169.20µgkg-1), acceptable precision (RSD 0.7-19.1%), satisfactory recovery (69-119%) and high enrichment factors (20-722). Several obtained LOQs are below the MRLs established by the European Commission; therefore, the method could be applied for pesticides determination in routing analysis and custom laboratories. Moreover, this method has shown to be suitable for determination of some of the studied pesticides in lime, melon, papaya, banana, tomato, and lettuce.
Palavras-chave
Atrazine (PubChem CID: 2256); Carbofuran (PubChem CID: 2566); Chlordane (PubChem CID: 5993); Diazinon (PubChem CID: 3017); Disulfoton (PubChem CID: 3118); Ethoprophos (PubChem CID: 3289); Factorial experimental design; Fruits; GCMS; Mango; Methyl parathion (PubChem CID: 4130); Permethrin (PubChem CID: 40326); Pesticides; Phorate (PubChem CID: 4790); Prophan (PubChem CID: 24685); SDME; Single drop micro-extraction
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Praguicidas
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article