Fabrication of nanostructured ZnNiBi-NO3 layered double hydroxides for speciation and preconcentration/separation of chromium ions prior to MIS-FAAS determination
| Autor: | Baddar Ul Ddin Jamali, Aydan Elçi, Ali Nawaz Siyal, Muhammad Kashif Samoon, Latif Elçi |
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| Rok vydání: | 2023 |
| Předmět: |
Cr(Iii)
MIS-FAAS Cr(Vi) Health Toxicology and Mutagenesis Layered double hydroxides Public Health Environmental and Occupational Health Soil Science speciation analysis Cr(VI) ions Water Pollution Analytical Chemistry Samples Cr(III) ions Environmental Chemistry Solid-Phase Extraction Waste Management and Disposal wastewater Resin Water Science and Technology |
| DOI: | 10.6084/m9.figshare.21989129 |
| Popis: | Nanostructured ZnNiBi-NO3-Layered Double Hydroxides (LDHs) was synthesised, followed by the simple co-precipitation method using Zn(NO3)2.6 H2O, Ni(NO3)2.6 H2O and Bi(NO3)3 as the precursors. Synthesised LDHs was characterised by various techniques such as infrared (IR) spectroscopy, x-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive x-ray (EDX) and thermal gravimetric analysis (TGA). ZnNiBi-NO3 LDHs were applied as efficient adsorbents for speciation analysis and preconcentration/separation of Cr(VI)/Cr(III) ions in aqueous samples prior to their trace determinations by microsample injection system-coupled flame atomic absorption spectrometry (MIS-FAAS). ZnNiBi-NO3 LDHs worked well for speciation and preconcentration/separation of Cr(VI)/Cr(III) ions at an optimum of pH 3.0 and adsorbent dosage of 400 mg. LOD and LOQ of Cr(VI) ions were calculated to be 0.03 and 0.10 μg L−1, respectively with a preconcentration factor of 400. The total saturation capacity of ZnNiBi-NO3 LDHs for Cr(VI) ions was investigated and found to be 46.0 mg g−1. The mthod was reproduced with RSD ≤1.4% of five replicates. The accuracy of method was evaluated by analysing 10–100 μg L−1 Cr(VI) ions standard solutions, and Cr(VI) ions were recovered ≥96.9% with RSD ≤2.4%. The developed method worked well on wastewater samples. |
| Databáze: | OpenAIRE |
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