| Literature DB >> 31366946 |
Reyhaneh Nayebi1, Ghazale Daneshvar Tarigh2, Farzaneh Shemirani3.
Abstract
Ionic liquids (ILs) are a class of fluids with unique physicochemical properties employing polymeric substances emerging new materials. Solidification of ILs into porous materials generates porous ionic liquidEntities:
Year: 2019 PMID: 31366946 PMCID: PMC6668434 DOI: 10.1038/s41598-019-47648-w
Source DB: PubMed Journal: Sci Rep ISSN: 2045-2322 Impact factor: 4.379
Figure 1A schematic diagram for the synthesis of magnetic porous ionic liquid and representation of the DMSPE process.
Figure 2SEM image of the porous ionic liquid polymer (a,b), magnetic porous ionic liquid polymer (d,c).
Figure 3TEM image of the porous ionic liquid polymer, (inset: foam structure of porous IL) (a), magnetic porous ionic liquid polymer (b).
Figure 4FT-IR spectra of the ionic liquid (a), porous ionic liquid polymer (b), and magnetic porous ionic liquid polymer (c).
Figure 5XRD patterns of porous ionic liquid polymer (a), magnetic porous ionic liquid polymer (b).
Figure 6Effect of pH on absorbance. Concentration of NO2− = 20 µg L−1, 10 mg M-porous IL, extraction time = 7 min, Elution with 1 M of HNO3.
Figure 7Effect of sorbent amount on absorbance intensity. Concentration of NO2− = 20 µg L−1, 10 mg M-porous IL, extraction time = 7 min, Elution with 1 M of HNO3.
Figure 8Effect of elution solvent on absorbance intensity. Concentration of NO2− = 20 µg L−1, 10 mg M-porous IL, extraction time = 7 min, Elution with 1 M of HNO3.
Figure 9Effect of elution solvent on absorbance intensity. Concentration of NO2− = 20 µg L−1, 10 mg M-porous IL, extraction time = 7 min, Elution with 1 M of HNO3.
Figure 10The effect of reuse of M-porous IL in extraction and elution.
Determination of nitrite in water samples by proposed method.
| Sample | Added (µg L−1) | Found (µg L−1) | Recovery % | RSD % (n = 3) | ||||
|---|---|---|---|---|---|---|---|---|
| NO2− | NO3− | NO2− | NO3− | NO2− | NO3− | NO2− | NO3− | |
| Tap | 0 | 0 | 0.45 | 2.35 | — | — | 2.22 | 2.06 |
| 5.00 | 5.00 | 5.41 | 7.07 | 99.20 | 94.40 | 2.21 | 2.83 | |
| Mineral | 0 | 0 | 10.57 | 23.82 | — | — | 2.34 | 3.01 |
| 5.00 | 5.00 | 15.61 | 28.59 | 95.40 | 100.01 | 3.77 | 2.78 | |
| River | 0 | 0 | 63.05 | 126.32 | — | — | 3.95 | 3.86 |
| 30.0 | 30.0 | 93.01 | 155.99 | 99.86 | 98.90 | 3.02 | 4.01 | |
Determination of nitrite and nitrate in fruits, grains, legumes and nuts sample by proposed method.
| Samples | Added (µg g−1) | Found (µg g−1) | Recovery | RSD % (n = 3) | ||||
|---|---|---|---|---|---|---|---|---|
| NO2− | NO3− | NO2− | NO3− | NO2− | NO3− | NO2− | NO3− | |
| Cantaloupe | 0 | 0 | 12.91 | 54.49 | — | — | 5.43 | 5.70 |
| 30.0 | 30.0 | 42.90 | 84.07 | 99.97 | 98.60 | 7.69 | 3.53 | |
| Watermelon | 0 | 0 | 10.34 | 94.20 | — | — | 2.14 | 2.97 |
| 30.0 | 30.0 | 40.32 | 127.17 | 99.93 | 109.90 | 4.71 | 1.18 | |
| Banana | 0 | 0 | 12.84 | 84.68 | — | — | 3.62 | 2.01 |
| 30.0 | 30.0 | 42.81 | 114.91 | 99.90 | 107.67 | 2.80 | 0.96 | |
| Industrial fruit juice | 0 | 0 | 17.54 | 42.67 | — | — | 1.18 | 2.85 |
| 30.0 | 30.0 | 47.50 | 72.45 | 99.87 | 99.27 | 2.95 | 1.38 | |
| Barely | 0 | 0 | 7.40 | 22.07 | — | — | 2.16 | 3.90 |
| 30.0 | 30.0 | 37.41 | 52.77 | 100.03 | 102.33 | 3.35 | 2.08 | |
| Rice | 0 | 0 | 6.93 | 20.85 | — | — | 1.55 | 4.13 |
| 30.0 | 30.0 | 36.86 | 50.17 | 99.77 | 97.73 | 4.17 | 2.60 | |
| Industrial Bread | 0 | 0 | 16.50 | 41.27 | — | — | 7.88 | 4.44 |
| 30.0 | 30.0 | 46.01 | 70.51 | 98.37 | 97.47 | 6.31 | 3.14 | |
| Lavash | 0 | 0 | 9.60 | 32.48 | — | — | 9.04 | 7.38 |
| 30.0 | 30.0 | 39.49 | 62.25 | 99.63 | 99.23 | 13.17 | 9.14 | |
| Sangak | 0 | 0 | 4.50 | 65.38 | — | — | 7.10 | 6.62 |
| 30.0 | 30.0 | 33.46 | 96.40 | 96.53 | 103.40 | 10.04 | 9.11 | |
| White bean | 0 | 0 | 6.17 | 15.59 | — | — | 3.39 | 3.66 |
| 30.0 | 30.0 | 36.10 | 45.72 | 99.77 | 100.43 | 5.56 | 3.43 | |
| Red bean | 0 | 0 | 11.13 | 25.65 | — | — | 4.18 | 4.62 |
| 30.0 | 30.0 | 39.01 | 55.01 | 92.93 | 97.87 | 3.94 | 3.13 | |
| Pistachio | 0 | 0 | 7.24 | 9.14 | — | — | 5.65 | 6.15 |
| 30.0 | 30.0 | 37.70 | 39.52 | 101.53 | 101.27 | 8.81 | 7.23 | |
| Almond | 0 | 0 | 9.56 | 14.34 | — | — | 4.32 | 5.12 |
| 30.0 | 30.0 | 39.41 | 43.16 | 99.50 | 96.07 | 6.24 | 7.15 | |
Comparing the current adsorbent with the results of other literature.
| Instrument | sorbent | LOD (µg L−1) | RSD (%) | Reusability | Operating pH range | Sorption capacity (mg g-1) | ref. |
|---|---|---|---|---|---|---|---|
| Ion Chromatography | MNPs@PIL | 0.13 | <5 | 20 | 8.0 | 100 | [ |
| Spectrofluorometry | MMWCNT | 34b | 0.6 | 12 | 1.5–11.0 | — | [ |
| Ion chromatography | SB600 | — | — | — | 3.0 | 37.8 | [ |
| Capillary electrophoresis | — | 0.8a | 6.0 | — | 2.5 | — | [ |
| UV-Vis spectroscopy | MGO-Gly | 17b | 1.2 | 10 | 4.0–9.0 | 238 | [ |
| UV-Vis spectroscopy | Polypyrrole/sawdust | 10 | <2 | 1 | 5.0 | — | [ |
| UV-Vis spectroscopy | Fe3O4/SiO2/ neocuproine | 0.40 | 4.10 | — | 5.5 | 83.3 | [ |
| UV-Vis spectroscopy | Zein biopolymeric NPs | 2.3 | 0.83,3.8 | — | 4.0 | — | [ |
| IS-LME-ET AAS | — | 0.013 | 4.8 | — | 5.5 | — | [ |
| ICP-AES | Stable conjugate materials | 0.16 | 3.2 | 8 | 5.5 | 119.2 | [ |
| Ion chromatography | — | 15 | 8.8 | — | — | — | [ |
| ICP-AES | Ligand functionalize porous conjugate material | 0.45 | - | 8 | 3.5 | 124.3 | [ |
| UV-Vis spectroscopy | Fe3O4 nanoparticles | 3.1 | 4.5 | — | 11.0 | — | [ |
| Ion-pairing cloud point extraction | — | 0.42 | 4.1 | — | 4.0 | — | [ |
| ICP-AES | 1-naphthylamine solid conjugate material | 0.23 | — | 8 | 4.0 | 135.2 | [ |
| Fluorescence quenching capillary analysis | — | 6.5 | 4.5 | — | 1.5 | — | [ |
| UV-Vis spectroscopy | M-porous IL | 0.10 | 3.2 | 13 | 4.0–9.0 | 233 | This work |
amg L−1.
bng L−1.