Amberlite ira 402

Manufactured by Merck Group

Sourced in Germany, United States

Amberlite IRA 402 is an anion exchange resin. It is a strongly basic anion exchanger with a macroporous structure. Amberlite IRA 402 is designed for the purification and separation of ionic species.

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6 protocols using amberlite ira 402

Synthesis and Characterization of Chelating Resins

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To carry out the experimental part of this paper, the following chemicals were used: DR 23 (7-[[6-[(4-acetamidophenyl)diazenyl]-5-hydroxy-7-sulfonatonaphthalen-2-yl] carbamoylamino]-4-hydroxy-3-phenyldiazenylnaphthalene-2-sulfonate) 30% dye content, strongly basic anion exchange resin Amberlite IRA 402, 50 mesh, in Cl⁻ form, and Amberlite XAD7HP 20–60 mesh were purchased from Sigma Aldrich. CRM solutions of 1000 mg/L Ni(NO₃)₂, Cd(NO₃)₂, Pb(NO₃)₂ and Cu(NO₃)₂ and 37 % HCl and 50% NaOH (Merck) were used for testing the chelating resins. Methanol with purity ≥ 99.9% for HPLC (MeOH) Honeywell and ethanol (EtOH) (Merck) were used in regeneration studies of the chelating resins.

Marin N.M., Ficai A., Constantin L.A., Motelica L, & Trusca R. (2022). New Chelate Resins Prepared with Direct Red 23 for Cd2+, Ni2+, Cu2+ and Pb2+ Removal. Polymers, 14(24), 5523.

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Complexation of Heavy Metals Using Maize Stalk

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All chemicals used here are of analytical grade. A styrene-divinylbenzene matrix with quaternary ammonium functional group in Cl⁻ form, specifically Amberlite IRA 402 (Cl⁻), was employed to obtain complexing resin with IC (Sigma Aldrich, St Louis, MO, USA). The complexing agent, indigo-5,5′-disulfonic acid disodium salt, 37% HCl, and certified reference materials (MRC) consisting of 1000 mg/L Cu(NO₃)₂, Pb(NO₃)₂, and Ni(NO₃)₂ were purchased from Merck (Lowe, NJ, USA). Maize stalk was collected at maturity and processed for application in batch experimental studies. The same procedures as presented in previous studies [7 (link)] regarding collecting, shredding, purification, and activation were applied to the obtained shredded maize stalk with a particle size of 1 mm.

, & Marin N.M. (2024). A New Approach of Complexing Polymers Used for the Removal of Cu2+ Ions. Polymers, 16(7), 920.

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Comprehensive Reagent Acquisition Protocol

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All reagents and solvents (ethanol, methanol, glacial acetyl acid, sodium hydroxide, formic acid, ammonium hydroxide, triethylamine, ʟ−alanine, ʟ−proline, ʟ−leucine, ʟ−phenylalanine, 2,2-diphenyl-1-picrylhydrazine (DPPH), 2,2′-azino-bis-(3-ethylbenzothiazolin)-6-sulfonic acid (ABTS), potassium persulfate, gallic acid, Amberlite XAD-7, Amberlite IRA-402, and silica functionalized with C18 groups) were purchased from Sigma-Aldrich (St. Louis, MO, USA).

Cruz S., Checa N., Tovar H., Cejudo-Bastante M.J., Heredia F.J, & Hurtado N. (2024). Semisynthesis of Betaxanthins from Purified Betacyanin of Opuntia dillenii sp.: Color Stability and Antiradical Capacity. Molecules, 29(9), 2116.

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Preparation and Characterization of Ion Exchange Membranes

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Sodium hypochlorite (NaClO, 14%), sodium hydrogen phosphate (NaH₂PO₄), sodium chloride (NaCl), calcium chloride dihydrate (CaCl₂∙2H₂O), magnesium sulfate heptahydrate (MgSO₄∙7H₂O), sodium hydrogen carbonate (NaHCO₃), potassium nitrate (KNO₃), sodium nitrate (NaNO₃), calcium carbonate (CaCO₃), magnesium chloride hexahydrate (MgCl₂∙6H₂O), potassium sulfate (K₂SO₄), sodium sulfate (Na₂SO₄), calcium sulfate dihydrate (CaSO₄∙2H₂O), boric acid (H₃BO₃, 0.5%), hydrogen peroxide (H₂O₂, 30%), and chloride acid (HCl, 0.1 M) were purchased from Scharlab S.L., Barcelona, Spain. The ultrapure water (Milli-Q) used in the experiments was obtained from Millipore, Molsheim, France, equipment (conductivity less than 0.055 µS cm⁻¹).
Polyvinyl chloride (PVC, Mw 112,000 g mol⁻¹) was supplied by ATOCHEM, Madrid, Spain. Tetrahydrofuran (THF) was purchased from Scharlab S.L. Amberlite^® IRA-402 (Cl⁻ form, total exchange capacity ≥ 1.0 mol L⁻¹) was supplied by Merck Life Science, Darmstadt, Germany, S.L.U.

Pompa-Pernía A., Molina S., Lejarazu-Larrañaga A., Landaburu-Aguirre J, & García-Calvo E. (2022). Validation of Recycled Nanofiltration and Anion-Exchange Membranes for the Treatment of Urban Wastewater for Crop Irrigation. Membranes, 12(8), 746.

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Anion Exchange Resin Characterization

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Sodium hypochlorite (NaClO, 14%), tetrahydrofuran (THF), sodium chloride (NaCl), sodium sulfate (Na₂SO₄) and sodium nitrate (NaNO₃) were purchased from Scharlab S.L., Barcelona, Spain Polyvinylchloride (PVC, Mw = 112,000 g·mol⁻¹) was supplied by ATOCHEM S.A., Madrid, Spain. Amberlite^® IRA-402 and Lewatit^® Sybron Ionac^® SR-7 anion exchange resins were supplied by Merck KGaA, Darmstadt, Germany. Purolite^® A600/9413 anion exchange resin was supplied by MemBrain^® s.r.o., Stráž pod Ralskem, Czech Republic. The characteristics of the anion exchange resins are reported in Table 1. MilliQ water was used throughout the experiments.

Lejarazu-Larrañaga A., Ortiz J.M., Molina S., Zhao Y, & García-Calvo E. (2020). Nitrate-Selective Anion Exchange Membranes Prepared using Discarded Reverse Osmosis Membranes as Support. Membranes, 10(12), 377.

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Synthesis and Characterization of Anion-Exchange Resins

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Sodium hypochlorite (NaClO, 14%), tetrahydrofuran (THF), sodium sulphate (Na₂SO₄), and ammonium chloride (NH₄Cl) were purchased from Scharlab, S.L., Barcelona, Spain. Sodium chloride (NaCl), sodium nitrate (NaNO₃), di-potassium hydrogen phosphate anhydrous (K₂HPO₄), humic acids (HA), Amberlite^® IRA-402, and Lewatit ^® Sybron Ionac ^® SR-7 anion-exchange resins were supplied by Merck KGaA, Darmstadt, Germany. Puroliteº^® A600/9413 anion-exchange resin was supplied by MemBrain ^® s.r.o., Stráž pod Ralskem, Czech Republic. Potassium dihydrogen phosphate (KH₂PO₄) was purchased from Chem-lab NV, Zedelgem, Belgium; sodium hydrogen phosphate (NaH₂PO₄) from Panreac Química S.L.U., Barcelona, Spain; magnesium sulphate heptahydrate (MgSO₄·7H₂O) from LabChem Inc., Zelienople, PA, USA; sodium hydroxide (NaOH) from Fisher Scientific Co. LLC., Pittsburgh, PA, USA, and citric acid from VWR chemicals, USA. Polyvinylchloride (PVC, Mw = 112,000 g mol⁻¹) was supplied by ATOCHEM, Madrid, Spain. MilliQ water was used throughout the experiments.

Lejarazu-Larrañaga A., Ortiz J.M., Molina S., Pawlowski S., Galinha C.F., Otero V., García-Calvo E., Velizarov S, & Crespo J.G. (2022). Nitrate Removal by Donnan Dialysis and Anion-Exchange Membrane Bioreactor Using Upcycled End-of-Life Reverse Osmosis Membranes. Membranes, 12(2), 101.

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