Simple and sensitive method for the determination of trace amounts of thorium using a benzoquinone derivative

Hamed, Mostafa M.; Aglan, Refaat F.

doi:10.1007/s41365-019-0606-2

Cited by 5 publications

(3 citation statements)

References 27 publications

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“…Metode Spektrofotometri UV-Vis menggunakan prinsip pengukuran adsorpsi cahaya pada kompleks torium-torin. Semakin banyak torium maka semakin banyak kompleks yang terbentuk dan semakin pekat pula warna sampel [20]. Sampel larutan sebanyak 5 mL dan 50 mL sampel standar dimasukkan ke dalam labu takar kemudian dalam labu tersebut ditambahkan 15 mL HCl pH 0,8; 4 mL torin 0,1%; dan 4 mL asam askorbat 5%.…”

Section: Analisis Torium Dengan Spektrofotometer Uv-visunclassified

Reduksi Torium Pada Limbah Cair Pengolahan Monasit Menggunakan Resin Penukar Anion

Hasna

Amalia

Marisi³

2020

EKSPLORIUM

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ABSTRAK Dampak dari pemisahan logam tanah jarang pada monasit adalah limbah cair yang mengandung unsur radioaktif torium yang berbahaya bagi lingkungan dan makhluk hidup. Metode standar dalam pemisahan torium dari limbah cair adalah dengan menggunakan resin penukar anion. Penelitian ini bertujuan untuk mengetahui jenis resin penukar anion, massa resin, dan waktu kontak yang optimum untuk menurunkan kadar torium dalam limbah cair monasit. Hasil menunjukkan bahwa laju penukaran optimum terjadi pada resin Amberlite IRA402 dengan waktu kontak 60 menit dan massa 1 gram yaitu sebesar 57,7%. Sementara itu, pada resin Tulsion A23, laju penukaran optimum sebesar 50,7% terjadi pada waktu kontak 50 menit dan massa resin 1 gram. Uji statistik menunjukkan tidak ada perbedaan nyata pada variasi jenis resin dan waktu kontak yang menunjukkan nilai signifikan >0,05. Pada waktu yang sama, terdapat perbedaan nyata pada variasi massa resin dengan hasil nilai signifikan <0,05. Uji Duncan menyatakan massa resin kecil (0,25 dan 0,5 gram) cocok untuk Tulsion A23 dan massa resin besar (0,75 dan1 gram) cocok untuk resin Amberlite IRA402.ABSTRACT The effect of separating rare earths from monazite is wastewater containing the radioactive element thorium which is harmful to the environment and living things. A standard method of separating thorium from wastewater is with anion-exchange resin. This study determines the optimum type of anion-exchange resin, resin weight, and contact time to reduce thorium levels in monazite wastewater. The results showed that the optimum exchange rate that occurred in Amberlite IRA402 resin is 57.7%, at 60 minutes and 1 gram. Meanwhile, the optimum exchange rate for Tulsion A23 resin is 50.7%, at 50 minutes and 1 gram. The statistical test showed that there was no significant difference in the resin type and contact time variation, which showed a considerable value >0.05. At the same time there was a substantial difference in resin mass variation with a significant value <0.05. The Duncan test stated that lighter resin masses (0.25 and 0.5 gram) are suitable for Tulsion A23 and heavier resin masses (0.75 and 1 gram) are ideal for Amberlite IRA402.

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Section: Analisis Torium Dengan Spektrofotometer Uv-visunclassified

Reduksi Torium Pada Limbah Cair Pengolahan Monasit Menggunakan Resin Penukar Anion

Hasna

Amalia

Marisi³

2020

EKSPLORIUM

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“…Among these techniques and methods, fluorescence spectroscopy is widely used for ion monitoring. Therefore, the fluorescence method has drawn much attention recently due to its simplicity, sensitivity, accuracy, precision, and ease of automation. , …”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the fluorescence method has drawn much attention recently due to its simplicity, sensitivity, accuracy, precision, and ease of automation. 5,6 Additionally, various techniques have been used to remove Th(IV) ions from wastewater or aqueous solutions. These methods include evaporation, chemical precipitation, nanofiltration, solvent extraction, flotation, ion exchange, and adsorption.…”

Section: ■ Introductionmentioning

confidence: 99%

Detection and Selective Removal Strategy of Thorium Ions Using a Novel Fluorescent Ligand and Hybrid Mesoporous γ-Al₂O₃-like Nanoneedles

Gomaa

Emran

Elsenety

et al. 2023

ACS Sustainable Chem. Eng.

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Long-term exposure to radioactive elements through water, such as thorium ions, has undesirable impacts and may cause serious health problems like cancer. Therefore, this manuscript originally targets detection and elimination of thorium ions from water samples, even at trace concentrations. Herein, a novel ligand, (Z)-N-carbamimidoyl-4-((3-phenylnaphtho[1,2-b]furan-5-yl)diazenyl)benzenesulfonamide (CFBS), was synthesized for fluorometric detection of thorium ions. Then, the prepared CFBS-ligand was well-immobilized and grafted with mesoporous γ-Al2O3-like nanoneedles to prepare a hybrid mesoporous γ-Al2O3-like nanoneedles (CFBS@AlNNs) adsorbent. The CFBS@AlNNs adsorbent was employed to adsorb and remove thorium ions from an aqueous solution. The results indicated that trace concentrations of thorium ions could be detected and removed with good sensitivity and selectivity. The findings confirmed superior adsorption efficiency (98%) and capacity (142 mg/g) of used CFBS@AINNs toward Th(IV) ions at pH 4. The mechanism of Th(IV)-adsorption was explained mathematically through kinetic studies, isotherm models, and computational studies. One of the key advantages of CFBS@AlNNs is its thorium selectivity even in the presence of other coexisting ions. The CFBS@AlNN design showed significant thorium-removal/adsorption capacity, although multiple reuse/recycling followed a simple desorption process. Given its high selectivity, fast diffusion, and highly efficient adsorption, the CFBS@AlNNs sorbent can be considered a potential adsorbent to remove and recover thorium ions from various water samples and can be used to prevent the health risks related to the long-term and direct exposition of thorium ions.

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Small-molecule-based fluorescent probes for f-block metal ions: A new frontier in chemosensors

Fang

Dehaen

2021

Coordination Chemistry Reviews

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Simple and sensitive method for the determination of trace amounts of thorium using a benzoquinone derivative

Cited by 5 publications

References 27 publications

Reduksi Torium Pada Limbah Cair Pengolahan Monasit Menggunakan Resin Penukar Anion

Reduksi Torium Pada Limbah Cair Pengolahan Monasit Menggunakan Resin Penukar Anion

Detection and Selective Removal Strategy of Thorium Ions Using a Novel Fluorescent Ligand and Hybrid Mesoporous γ-Al₂O₃-like Nanoneedles

Small-molecule-based fluorescent probes for f-block metal ions: A new frontier in chemosensors

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Simple and sensitive method for the determination of trace amounts of thorium using a benzoquinone derivative

Cited by 5 publications

References 27 publications

Reduksi Torium Pada Limbah Cair Pengolahan Monasit Menggunakan Resin Penukar Anion

Reduksi Torium Pada Limbah Cair Pengolahan Monasit Menggunakan Resin Penukar Anion

Detection and Selective Removal Strategy of Thorium Ions Using a Novel Fluorescent Ligand and Hybrid Mesoporous γ-Al2O3-like Nanoneedles

Small-molecule-based fluorescent probes for f-block metal ions: A new frontier in chemosensors

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Detection and Selective Removal Strategy of Thorium Ions Using a Novel Fluorescent Ligand and Hybrid Mesoporous γ-Al₂O₃-like Nanoneedles