Silica nanoparticle-covered Graphene Oxide as solid-phase extraction sorbent coupled with FAAS for the determination of some of heavy metals in water sample
Abstract
The current study portrays a dispersive solid-phase extraction as a silica nanoparticle-covered Graphene Oxide(GO-SiO2) synthesised with some modification as in the literature and developed removal/preconcentration method for selective extraction of some heavy metal in water samples. Flame atomic absorption spectrophotometry (FAAS) was used to measure in optimum conditions for the proposed method. Field emission scanning electron microscope (FESEM) and X-beam diffraction (XRD) were utilised for the characterisation of solid phase. The developed method presents high surface areas for sorption capacity and a low amount of solid phase. The removal percentage was performed at approximately 100% with pH 4 to 10 for all metal ions. According to validation results under the optimised method, the limits of detection (LODs) and quantification (LOQs) were found in the range of 5.8–23.0 µg L−1 and 16.0 − 38.1 µg L−1, respectively. The developed method was applied by using certified reference material (BCR 715) for trueness, which observed high relative recovery with lower than 11.8% relative error except for Pb and Cd. The comparison between the experimental results and the certified reference material indicated that the accuracy of the method is higher than 90%. The proposed method was effectively practised for five water samples with standard addition.
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- Authors
- Seval, K., & Akdoğan, A.
- Affiliations
- Pamukkale University (TR)
- Corresponding author
- Akdoğan, Abdullah
- Venue
- International Journal of Environmental Analytical Chemistry
- Publisher
- Informa UK Limited
- Published
- 2020-11-24
- Volume
- 102
- Issue
- 19
- Pages
- 8402-8418
- ISSN
- 0306-7319 (ISSN-L)
- 1029-0397
- OpenAlex
- W3106909836
- Cited by
- 8
- References
- 38
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 1 · 2023: 2 · 2021: 3
- FWCI
- 0.65
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- International Journal of Environmental & Analytical Chemistry (publishedVersion)
- Funders
- the Scientific Research Projects (SRP) Coordination Unit of PamukkaleUniversity (2019FEBE003)
- Topics
- Physical Sciences › Chemistry › Analytical Chemistry › Analytical chemistry methods development
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Physical Sciences › Environmental Science › Water Science and Technology › Environmental and Analytical Chemistry Studies
- Keywords
- dispersive solid-phase extraction, heavy metal preconcentration, water samples, flame atomic absorption spectrometry, lead, cadmium, sorbent synthesis, trace metal analysis
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