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- Title
Graphene oxide cross-linked with phytic acid: an efficient adsorbent for the extraction of carbamates.
- Authors
Wu, Juanjuan; Liang, Xinyu; Hao, Lin; Wang, Chun; Wu, Qiuhua; Wang, Zhi
- Abstract
A nanocomposite (designated as PAG) possessing amphiphilic properties was prepared by a single-step method from graphene oxide and phytic acid, in which phytic acid acts as both an inducer and cross-linking agent. The morphology and microstructure of PAG were characterized by nitrogen adsorption, scanning electron microscopy and transmission electron microscopy. The PAG possess a 3 dimensional network structure with interpenetrated nano- and micropores and represent a viable adsorbent for solid-phase extraction of carbamate pesticides prior to their quantitation by high performance liquid chromatography. Under optimum conditions, the calibration plot is linear in the 0.5 to 80 ng g concentration range in case of apple samples, and in the 1.0 to 80 ng mL range for juice samples. The respective limits of detection (for S/ N = 3) are between 0.05 and 0.1 ng g, and between 0.2 and 0.3 ng mL. The PAG has a high adsorption capability, and in our preception it may become a useful adsorbent for the preconcentration of other organic pollutants.
- Subjects
GRAPHENE oxide; PHYTIC acid; CARBAMATES; NANOCOMPOSITE materials; FRUIT juice analysis; SOLID phase extraction; HIGH performance liquid chromatography
- Publication
Microchimica Acta, 2017, Vol 184, Issue 10, p3773
- ISSN
0026-3672
- Publication type
Article
- DOI
10.1007/s00604-017-2413-y