On-line preconcentration of rhodium on an anion-exchange resin loaded with 1,5-bis(2-pyridyl)-3-sulphophenyl methylene thiocarbonohydrazide and its determination in environmental samples

Talanta ◽  
2004 ◽  
Vol 64 (1) ◽  
pp. 230-236 ◽  
Author(s):  
F SANCHEZROJAS
Keyword(s):  
Anion Exchange ◽  
Environmental Samples ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
On Line

scholarly journals Fast Recovery of Lead from Hydrochloric Acid via a Novel Silica-Supported Anion Exchange Resin for the Determination of 210Pb in Environmental Samples

2020 ◽  
Author(s):  
Lifeng Chen ◽  
Jie Zhang ◽  
Xianwen He ◽  
Manqing Liu ◽  
Qiuyang Wei ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Environmental Samples ◽  
Adsorption Mechanism ◽  
Exchange Resin ◽  
Separation Efficiency ◽  
Anion Exchange Resin ◽  
Chemical Yield ◽  
Flow Speed ◽  
Exchange Capacity ◽  
Hcl Solution

The<b> </b>measurement of <sup>210</sup>Pb is significant in environmental studies. Lead separation in HCl solution is a vital procedure but suffers from poor efficiency with high labor and time costs. To overcome this problem, a novel anion exchange resin was synthesized and characterized by different techniques followed by studies on the adsorption behaviors towards lead in HCl solution. The results suggest that SiPS-N(CH<sub>3</sub>)<sub>3</sub>Cl was successfully prepared with small particle size, low water swelling rate, and large specific surface area. The maximum anion exchange capacity resulted from quaternary amine groups was determined to be 1.0 mmol (Cl<sup>-</sup>)/g.The adsorption activities reached equilibrium within 3 min under selected conditions offering extremely fast adsorption kinetics. The synergistic adsorption mechanism, the multilayer adsorption mechanism, and the competition from co-existing chloride anions were found to be responsible for the lead adsorption performance of SiPS-N(CH<sub>3</sub>)<sub>3</sub>Cl. Column experiments showed that the feeding volume of lead and HCl had impact on the chemical yield regardless of the co-existence of high concentrations of FeCl<sub>3</sub> (90 mM) and a high flow speed (4.0 mL/min). Based on these results, a separation process integrating SiPS-N(CH<sub>3</sub>)<sub>3</sub>Cl and the matched parameters was finally developed and tested. Our work greatly raised the lead separation efficiency in HCl solutions with implications for measuring <sup>210</sup>Pb in environmental samples.

scholarly journals Fast Recovery of Lead from Hydrochloric Acid via a Novel Silica-Supported Anion Exchange Resin for the Determination of 210Pb in Environmental Samples

2020 ◽  
Author(s):  
Lifeng Chen ◽  
Jie Zhang ◽  
Xianwen He ◽  
Manqing Liu ◽  
Qiuyang Wei ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Environmental Samples ◽  
Adsorption Mechanism ◽  
Exchange Resin ◽  
Separation Efficiency ◽  
Anion Exchange Resin ◽  
Chemical Yield ◽  
Flow Speed ◽  
Exchange Capacity ◽  
Hcl Solution

The<b> </b>measurement of <sup>210</sup>Pb is significant in environmental studies. Lead separation in HCl solution is a vital procedure but suffers from poor efficiency with high labor and time costs. To overcome this problem, a novel anion exchange resin was synthesized and characterized by different techniques followed by studies on the adsorption behaviors towards lead in HCl solution. The results suggest that SiPS-N(CH<sub>3</sub>)<sub>3</sub>Cl was successfully prepared with small particle size, low water swelling rate, and large specific surface area. The maximum anion exchange capacity resulted from quaternary amine groups was determined to be 1.0 mmol (Cl<sup>-</sup>)/g.The adsorption activities reached equilibrium within 3 min under selected conditions offering extremely fast adsorption kinetics. The synergistic adsorption mechanism, the multilayer adsorption mechanism, and the competition from co-existing chloride anions were found to be responsible for the lead adsorption performance of SiPS-N(CH<sub>3</sub>)<sub>3</sub>Cl. Column experiments showed that the feeding volume of lead and HCl had impact on the chemical yield regardless of the co-existence of high concentrations of FeCl<sub>3</sub> (90 mM) and a high flow speed (4.0 mL/min). Based on these results, a separation process integrating SiPS-N(CH<sub>3</sub>)<sub>3</sub>Cl and the matched parameters was finally developed and tested. Our work greatly raised the lead separation efficiency in HCl solutions with implications for measuring <sup>210</sup>Pb in environmental samples.

Determination of 129I in environmental samples by AMS and NAA using an anion exchange resin disk

2007 ◽  
Vol 259 (1) ◽  
pp. 370-373 ◽  
Author(s):  
Takashi Suzuki ◽  
Shigeru Banba ◽  
Toshikatsu Kitamura ◽  
Shoji Kabuto ◽  
Keisuke Isogai ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Environmental Samples ◽  
Exchange Resin ◽  
Anion Exchange Resin

scholarly journals Flow injection spectrophotometric determination of adrenaline using a solid-phase reactor containing triiodide ions immobilized in an anion-exchange resin

2004 ◽  
Vol 29 (1) ◽  
pp. 79-84 ◽  
Author(s):  
H. J. Vieira ◽  
O. Fatibello-Filho
Keyword(s):  
Anion Exchange ◽  
Flow Injection ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Solid Phase ◽  
Pharmaceutical Products ◽  
Three Samples ◽  
Solid Phase Reactor ◽  
On Line

A flow injection spectrophotometric procedure with on-line solid-phase reactor containing ion triiodide immobilized in an anion-exchange resin is proposed for the determination of adrenaline (epinephrine) in pharmaceutical products. Adrenaline is oxidized by triiodide ion immobilized in an anionic-exchange resin yielding adrenochrome which is transported by the carrier solution and detected at a wavelength of 488 nm. Adrenaline was determined in three pharmaceutical products in the 6.4 x 10-6 to 3.0 x 10-4 mol L-1 concentration range with a detection limit of 4.8 x 10-7 mol L-1. The recovery of this analyte in three samples ranged from 96.0 to 105 %. The analytical frequency was 80 determinations per hour and the RSDs were less than 1 % for adrenaline concentrations of 6.4 x 10-5 and 2.0 x 10-4 mol L-1 (n=10). A paired t-test showed that all results obtained for adrenaline in commercial formulations using the proposed flow injection procedure and a spectrophotometric batch procedure agree at the 95% confidence level.

PEMODELAN MATEMATIS ADSORPSI CO2 DENGAN STRONG BASE ANION EXCHANGE RESIN SEBAGAI ADSORBEN UNTUK PURIFIKASI BIOGAS

2015 ◽  
Vol 5 (1) ◽  
pp. 11
Author(s):  
Anies Mutiari ◽  
Wiratni Wiratni ◽  
Aswati Mindaryani
Keyword(s):  
Anion Exchange ◽  
Pilot Plant ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Scale Up ◽  
Sum Of Squares ◽  
Strong Base ◽  
Model Transfer ◽  
Plant Parameter

Pemurnian biogas telah banyak dilakukan untuk menghilangkan kadar CO2  dan meningkatkan kandungan CH4  yang terkandung di dalamnya. Kandungan CH4 yang tinggi akan memberikan unjuk kerja yang lebih baik. Model  matematis proses adsorpsi CO2 disusun berdasarkan teori lapisan film antar fasa, dimana pada proses yang ditinjau terdapat tiga fase yaitu gas, cair dan padat. Model matematis dari data eksperimental   kecepatan dan kesetimbangan proses adsorpsi CO2 melalui mekanisme pertukaran ion di suatu kolom adsorpsi telah dibuat. Model ini dibuat untuk mencari konstanta yang dapat dipergunakan pada proses scale up data laboratorium ke skala pilot plant. Parameter proses kecepatan yang dicari nilainya adalah koefisien transfer massa massa volumetris CO2 pada fase cair (kLa), koefisien transfer massa volumetris CO2 pada fasegas (kGa) dan tetapan laju reaksi (k1 dan k2). Pada hasil penelitian ini ditunjukkan bahwa nilai parameter yang diperoleh sesuai hasil fitting data dengan model matematis yang digunakan, yaitu model transfer massa pada lapisan film antar fase secara seri: adalah kGa, kla, k1 dan k2  dengan nilai Sum of Squares Error (SSE) rata-rata 0,0431. Perbandingan nilai kGa hasil simulasi dan teoritisnya memberikan kesalahan rata-rata 18,79%. Perbandingan nilai kLa hasil simulasi dan teoritis memberikan kesalahan rata-rata 7,92%.Kata kunci: model matematis, adsorpsi CO2, pemurnian biogas

Sign in / Sign up

Export Citation Format

Share Document