Use of the Anion-Exchange Resin Amberlite IRA-93 for the Separation of Arsenite and Arsenate in Aqueous Samples

Abstract

The method described uses the separation of As(III) and As(V) species in aqueous samples by means of the anion‐exchange resin Amberlite IRA‐93. The samples were acidified using acetic acid and passed through a glass column filled with pre‐treated Amberlite IRA‐93 resin. As(III) was poorly adsorbed on the anionic exchanger material, whereas As(V) was retained. The arsenic concentration was measured in the column effluent by graphite furnace AAS (GF‐AAS). The retained As(V) was eluted from the column using 1 M NaOH. Prior to the determination of the As(V) concentration in the NaOH eluate, the eluate was passed through a glass column filled with a cation‐exchange resin (Amberlite 200) to remove sodium ions and minimize the Na+ interference with the AAS determination. After calibration the method was applied to the separation of As(III) and As(V) species in two aqueous extracts of arsenic contaminated soils. The results were compared with those obtained from an on‐line separation and determination of As(III) and As(V) in the aqueous soil extracts using a state of the art HPLC‐ICP‐MS system.

Sorption of As(III) by calix[4]arene modified XAD-4 resin: kinetic and thermodynamic approach

“…Due to these characteristic features sorption technology is the most promising and a fabulous technique for arsenic removal from wastewater [16]. A variety of natural as well as synthetic materials has been tremendously utilized in sorption technology [17][18][19][20]. In this view one of the most magnificent member of macromolecules is "calixarene" has played a pivotal role for decontamination of hazardous materials.…”

Effect of calcium on adsorptive removal of As(III) and As(V) by iron oxide-based adsorbents

“…Arsenate was determined as the difference between total arsenic and arsenite. [23] Calcium was analysed with a flame atomic absorption spectrophotometer (Perkin-Elmer model AAnalyst 200).…”

Atomic Spectrometry Update. Advances in atomic emission, absorption, and fluorescence spectrometry, and related techniques

“…An applications paper used ion chromatography and then ''offline'' detection with ETAAS. 664 The resin Amberlite IRA-93 was packed into a glass column and then used to separate As III and As V in aqueous samples. It was found that the As III was poorly retained on the column and could be measured directly, but that the As V needed to be eluted with 1 M NaOH.…”