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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Packed in-tube solid phase microextraction with graphene oxide supported on aminopropyl silica: Determination of target triazines in water samples

Full text
Author(s):
De Toffoli, Ana L. [1] ; Fumes, Bruno H. [1] ; Lancas, Fernando M. [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Inst Chem Sao Carlos, Dept Chem, Postal Code 780, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMIN; v. 53, n. 7, p. 434-440, 2018.
Web of Science Citations: 7
Abstract

On-line in-tube solid phase microextraction (in-tube SPME) coupled to high performance liquid chromatography and tandem mass spectrometry (HPLC-MS/MS) was successfully applied to the determination of selected triazines in water samples. The method based on the employment of a packed column containing graphene oxide (GO) supported on aminopropyl silica (Si) showed that the extraction phase has a high potential for triazines extraction aiming to its physical-chemical properties including ultrahigh specific surface area, good mechanical and thermal stability and high fracture strength. Injection volume and loading time were both investigated and optimized. The method validation using Si-GO to extract and concentrate the analytes showed satisfactory results, good sensitivity, good linearity (0.2-4.0 mu g L-1) and low detection limits (1.1-2.9 ng L-1). The high extraction efficiency was determined with enrichment factors ranging from 1.2-2.9 for the lowest level, 1.3-4.9 intermediate level and 1.2-3.0 highest level (n = 3). Although the analytes were not detected in the real samples evaluated, the method has demonstrated to be efficient through its application in the analysis of spiked triazines in ground and mineral water samples. (AU)

FAPESP's process: 15/15462-5 - Employment of graphene as sorbent in miniaturized sample preparation techniques.
Grantee:Bruno Henrique Fumes
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 14/07347-9 - Development of novel materials and devices for miniaturized sample preparation techniques in the area of food safety
Grantee:Fernando Mauro Lanças
Support Opportunities: Regular Research Grants