Vortex-assisted magnetic solid-phase extraction of cadmium in food, medicinal herb, and water samples using silica-coated thiol-functionalized magnetic multiwalled carbon nanotubes as adsorbent

Morales, Priscilla dos Santos; Santos, Paula Mantovani dos; Carvalho, Adriana Evaristo de; Corazza, Marcela Zanetti

doi:10.1016/j.foodchem.2021.130823

Cited by 21 publications

(5 citation statements)

References 37 publications

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“…Berbagai bahan SPE yang digunakan sebagai media adsorpsi logam dengan alat bantu yang digunakan untuk proses adsorpsi telah diteliti. Beberapa penelitian tersebut antara lain SPE-kolom dengan media adsorbsi E. profundum yang diembankan pada resin Amberlite XAD-4 [4], resin Chelex-100 [1], votex-multiwalled carbon nanotubes (MWCNT) [5], magnetic dispersive SPE [2], [6], [7], ultrasonicmagnetic MWCNT/Zeolite nanocomposite [8], nanoporous Zn/Co/C derived from ZIF-8/ZIF-67 core-shell [9], DSPE combined with TS-FF-AAS [10], resin Amberlyst 15 [11], sonication-DSPE stearic acid coated magnetic nanoparticle [12], sonication silica-based amino-tagged nanosorbent (MCM-41@NH2) [13]. Dari hasil penelitian menunjukkan teknik SPE memberikan hasil yang cukup efektif untuk meningkatkan nilai absorbansi logam dalam sampel.…”

Section: Pendahuluanunclassified

Ekstraksi Logam Cd, Pb dan Fe Dalam Air Menggunakan Resin Dowex 50wx2-200 secara bersamaan Untuk Meningkatkan Nilai Absorbansi Pada Pengujian Secara SSA-Nyala: Pengaruh pH, Laju Alir dan Berat Resin

Yuniar

Suwartini

Yanti

2023

JPS

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Teknik preparasi untuk pengujian logam Cd, Pb dan Fe dalam konsentrasi yang sangat kecil telah dilakukan secara ekstraksi fase padat menggunakan resin DOWEX 50WX2-200 di dalam kolom ekstraksi secara bersamaan. Logam yang terserap pada resin dilepaskan kembali menggunakan larutan asam nitrat dengan volume yang lebih kecil dari volume sampel, sehingga terjadi proses pemekatan logam dalam sampel. Pada saat sampel diukur menggunakan SSA-nyala maka akan terjadi peningkatan nilai absorbansi yang akan meningkatkan akurasi hasil.Optimasi kondisi ekstraksi larutan dilakukan menggunakan larutan model yang mengandung Cd, Pb dan Fe masing-masing 0,1 mg/L sebanyak 50 mL. Diperoleh kondisi optimum pada pH 3, laju alir 1 mL/menit, dan berat resin 0,5 g. Proses elusi dilakukan menggunakan asam nitrat 1 N 10 mL (faktor pengayaan 5 kali).Pengujian akurasi metode menggunakan Certified Reference Material, CRM PotableWatR cat.697, Waters ERA dengan hasil untuk logam Cd dan Pb sesuai dengan nilai sertifikat, sementara untuk Fe masih belum memenuhi nilai sertifikat. Secara umum nilai akurasi masih berada dalam batas keberterimaan antara 70-125% dengan presisi metode cukup memuaskan untuk semua logam (%RSD < 8).

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Section: Pendahuluanunclassified

Ekstraksi Logam Cd, Pb dan Fe Dalam Air Menggunakan Resin Dowex 50wx2-200 secara bersamaan Untuk Meningkatkan Nilai Absorbansi Pada Pengujian Secara SSA-Nyala: Pengaruh pH, Laju Alir dan Berat Resin

Yuniar

Suwartini

Yanti

2023

JPS

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“…A new adsorbent (MWCNT‐Fe 3 O 4 @SiO 2 ) based on MWCNT modified with Fe 3 O 4 @SiO 2 , followed by functionalized with thiol group containing 3‐mercaptopropyltrimethoxysilane (3‐MPTS) was synthesized [ 96 ] for MSPE techniques, the prepared adsorbent was used for the extraction of Cd(II) from mineral water, tap water followed by detected using GFAAS. At sample pH 4.5, the adsorbent had higher extraction values, due to the presence of higher surface properties, and adsorption reached equilibrium within a short time (8 min).…”

Section: Recent Applications Of Mspe For Heavy Metal Analysis In Envi...mentioning

confidence: 99%

Recent applications of atomic spectroscopy coupled with magnetic solid‐phase extraction techniques for heavy metal determination in environmental samples: A review

Pasupuleti

Huang

2023

J Chinese Chemical Soc

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Atomic spectroscopy is the most popular approach to determine the presence of heavy metals in the environment. Heavy metals are potentially toxic and have various negative effects on many living organisms, including humans. With the rapid increase in the variety of industries and human activities, large amounts of heavy metals are released into the atmosphere, water, and soil. Heavy metal analysis of environmental samples is very important for determining the exposure limits. Environmental samples are highly complex matrices, and various sample preparation techniques have been developed for the extraction of heavy metals from them, including magnetic solid‐phase extraction (MSPE). The use of MSPE in heavy metal analysis has recently gained significant attention owing to a number of advantages. MSPE technique overcomes main issues such as phase separation, handling, and column packing. The use of magnetic adsorbents in sample preparation has grown over the past few years, making MSPE a promising technique for sample preparation. The objective of this review article is to provide the latest applications of MSPE coupled with atomic spectroscopy for heavy metal determination in environmental samples. In addition, new magnetic adsorbents and their analytical merits are emphasized.

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“…For the preparation of the sorbent, RHA provided by a local company has been chosen as a raw precursor to directly obtain silica-supported carbon nanomaterials, thus also allowing a different reuse of an industrial by-product. Silica-supported C-based materials prepared via grafting onto SiO 2 substrates, including polymers [ 10 ] and different carbon nanomaterials [ 11 , 12 , 13 ], are currently used for the extraction of contaminants from environmental, food, and biological matrices.…”

Section: Introductionmentioning

confidence: 99%

From Rice Husk Ash to Silica-Supported Carbon Nanomaterials: Characterization and Analytical Application for Pre-Concentration of Steroid Hormones from Environmental Waters

et al. 2023

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Rice husk (RH) in the rice industry is often air-burnt to obtain energy in the form of heat and RH ash (RHA) residue. In this work, RHA was applied as a starting material to obtain silica-supported carbon nanomaterials, resulting in a new reuse of a globally produced industrial waste product, in a circular economy approach. The preparation involves ultrasound-assisted one-pot oxidation with a sulfonitric mixture followed by wet oven treatment in a closed vessel. A study of oxidation times and RHA amount/acid volume ratio led to a solid material (nC-RHA@SiO2) and a solution containing silica-supported carbon quantum dots (CQD-RHA@SiO2). TEM analyses evidenced that nC-RHA@SiO2 consists of nanoparticle aggregates, while CQD-RHA@SiO2 are carbon-coated spherical silica nanoparticles. The presence of oxygenated carbon functional groups, highlighted by XPS analyses, makes these materials suitable for a wide range of analytical applications. As the main product, nC-RHA@SiO2 was tested for its affinity towards steroid hormones. Solid-phase extractions were carried out on environmental waters for the determination of target analytes at different concentrations (10, 50, and 200 ng L−1), achieving quantitative adsorption and recoveries (RSD < 20%, n = 3). The method was successfully employed for monitoring lake, river, and wastewater treatment plant water samples collected in Northern Italy.

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Vortex-assisted magnetic solid-phase extraction of cadmium in food, medicinal herb, and water samples using silica-coated thiol-functionalized magnetic multiwalled carbon nanotubes as adsorbent

Cited by 21 publications

References 37 publications

Ekstraksi Logam Cd, Pb dan Fe Dalam Air Menggunakan Resin Dowex 50wx2-200 secara bersamaan Untuk Meningkatkan Nilai Absorbansi Pada Pengujian Secara SSA-Nyala: Pengaruh pH, Laju Alir dan Berat Resin

Ekstraksi Logam Cd, Pb dan Fe Dalam Air Menggunakan Resin Dowex 50wx2-200 secara bersamaan Untuk Meningkatkan Nilai Absorbansi Pada Pengujian Secara SSA-Nyala: Pengaruh pH, Laju Alir dan Berat Resin

Recent applications of atomic spectroscopy coupled with magnetic solid‐phase extraction techniques for heavy metal determination in environmental samples: A review

From Rice Husk Ash to Silica-Supported Carbon Nanomaterials: Characterization and Analytical Application for Pre-Concentration of Steroid Hormones from Environmental Waters

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