Fe3O4–SiO2–graphene oxide–amino acid ionic liquid magnetic solid-phase extraction combined with inductively coupled plasma optical emission spectrometry for speciation of Cr(<scp>iii</scp>) and Cr(<scp>vi</scp>) in environmental water

Jin-shun, Cang; Gu, Weixi; Zhang, Yuheng; Zhu, Xiashi

doi:10.1039/d1nj04917h

Cited by 10 publications

(2 citation statements)

References 50 publications

(45 reference statements)

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“…The effect of pH on preconcentration techniques as presented in Figure 5 indicated that solid-phase preconcentration of the Cr-EDTA seems unaffected. At pH 5 to pH 7, similar behaviour was observed in previous research [36,40]. Earlier studies revealed that under slightly acidic conditions, the monovalent [Cr(EDTA)] − ion predominates [36].…”

Section: The Effect Of Ph On the Chromium-edta-and-apdc Complexes Pre...supporting

confidence: 86%

“…Metal ions of Cu, Fe, Co, and Ni among others, chelate EDTA and APDC [36,40], which makes it necessary to study the effect of other metals that may compete for the ligands. A multielement standard XVI (MS XVI) (Merck, Darmstadt, Germany), made of 21 elements from different parts of the periodic table at equal concentration was used.…”

Section: Effect Of Metal Ions On the Recovery Of Cr(iii) And Cr(vi)mentioning

confidence: 99%

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Two-step one-pot speciation of chromium as Cr-APDC-and-NaEDTA complexes followed by ETA-AAS analysis

Salihu,

Bakar

2024

Recent Adv. Nat. Sci

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A two-step preconcentration method involving solid-and-liquid-phase extraction procedures has been proposed for the speciation of chromium in a one-pot system. The method used sodium ethylenediaminetetraacetic acid (NaEDTA) and ammonium pyrrolidinedithiocarbamate (APDC). The Cr(VI)-APDC was extracted with ethyl acetate and digested with nitric acid. while the Cr(III)-EDTA complex ion was adsorbed onto Al2O3 (neutral grade) with the aid of a tetrabutylammonium bromide (TBAB) pairing agent and desorbed with a hydrochloric acid solution. Sample splitting was not required. The ZEEnit 650P, electrothermal atomization atomic absorption spectrometer, (ETA-AAS) was employed for the analysis. The concentration of the chromium (III) in the samples ranged from 1.83±0.00 µg L−1 to 106.28±0.21 µg L−1, while <LOD to 19.85±0.12 µg L−1 was the range of Cr(VI) concentration in the samples. Recovery from spiked samples was between 83% and 117% Cr(III) and 79% and 99% Cr(VI). Precision (n = 6), was 1.87% for Cr(III) and 7.67% for Cr(VI). The limits of detection (LODs), calculated by the Aspect LS software (3σ, n = 11) were 0.42 µg L−1 and 0.62 µg L−1 for Cr(III) and Cr(VI) respectively. The mean total chromium (n = 3), from the certified reference material (CRM), LGC6019 was 0.74±0.61 µg L−1, (certified value = 0.78±0.20 µg L−1). The preconcentration factor: ratio of the Cr(III) content of CRM before and after preconcentration was 3.57. Parameters such as pH, time, temperature, and the amount of adsorbent were optimized by the isolation method. The method was validated and applied for the speciation analysis of chromium in water samples.

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Section: The Effect Of Ph On the Chromium-edta-and-apdc Complexes Pre...supporting

confidence: 86%

Section: Effect Of Metal Ions On the Recovery Of Cr(iii) And Cr(vi)mentioning

confidence: 99%

Two-step one-pot speciation of chromium as Cr-APDC-and-NaEDTA complexes followed by ETA-AAS analysis

Salihu,

Bakar

2024

Recent Adv. Nat. Sci

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Sorbent-phase sample preparation in environmental analysis

Xu,

Ma,

Shi

2024

Reference Module in Chemistry, Molecular Sciences and Chemical Engineering

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Advanced materials in sorbent-based analytical sample preparation

Torabi,

Abdar,

Lotfian

et al. 2024

Coordination Chemistry Reviews

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Fe₃O₄–SiO₂–graphene oxide–amino acid ionic liquid magnetic solid-phase extraction combined with inductively coupled plasma optical emission spectrometry for speciation of Cr(iii) and Cr(vi) in environmental water

Abstract: Magnetic graphene oxide coated with amino acid ionic liquid (Fe3O4-SiO2-GO-AAIL) as a solid extractant coupled with inductively coupled plasma optical emission spectrometry (ICP-OES) has been developed for speciation analysis of...

Cited by 10 publications

References 50 publications

Two-step one-pot speciation of chromium as Cr-APDC-and-NaEDTA complexes followed by ETA-AAS analysis

Two-step one-pot speciation of chromium as Cr-APDC-and-NaEDTA complexes followed by ETA-AAS analysis

Sorbent-phase sample preparation in environmental analysis

Advanced materials in sorbent-based analytical sample preparation

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Fe3O4–SiO2–graphene oxide–amino acid ionic liquid magnetic solid-phase extraction combined with inductively coupled plasma optical emission spectrometry for speciation of Cr(iii) and Cr(vi) in environmental water

Abstract: Magnetic graphene oxide coated with amino acid ionic liquid (Fe3O4-SiO2-GO-AAIL) as a solid extractant coupled with inductively coupled plasma optical emission spectrometry (ICP-OES) has been developed for speciation analysis of...

Cited by 10 publications

References 50 publications

Two-step one-pot speciation of chromium as Cr-APDC-and-NaEDTA complexes followed by ETA-AAS analysis

Two-step one-pot speciation of chromium as Cr-APDC-and-NaEDTA complexes followed by ETA-AAS analysis

Sorbent-phase sample preparation in environmental analysis

Advanced materials in sorbent-based analytical sample preparation

Contact Info

Product

Resources

About

Fe₃O₄–SiO₂–graphene oxide–amino acid ionic liquid magnetic solid-phase extraction combined with inductively coupled plasma optical emission spectrometry for speciation of Cr(iii) and Cr(vi) in environmental water