Preconcentration and separation with Amberlite XAD-4 resin; determination of Cu, Fe, Pb, Ni, Cd and Bi at trace levels in waste water samples by flame atomic absorption spectrometry

Facile Synthesis of a Luminescent Material, PAN@{SiO2}n, Having a Simultaneous Binding Capacity of High and Low Oxidation States: HOMO and LUMO, Quantum-mechanical Descriptor of Break-through Capacity

“…22,[53][54][55][56][57][58][59][60][61][62][63][64][65][66] Most of the earlier synthesis required complicated steps with stringent reaction conditions (like refluxing: 24 -90 h, starring, very high or low temperature, repetitive filtrations, inert atmosphere, vacuum, costly and hazardous chemicals). 11,17,22 Moreover, the cross-linking activity of bridging component increases the size of earlier used FSG-X, and their surface activities were turned down to a moderate level.…”

Development of 2-acetylpyridine-4-phenyl-3-thiosemicarbazone functionalized polymeric resin for the preconcentration of metal ions prior to their ultratrace determinations by MIS-FAAS

“…2 Thus, accurate and precise determination of trace heavy metal ions in air, water, soil, plant, food, and geological samples has become a major interest of chemists. 3,4 Flame atomic absorption spectrometry (FAAS) has been extensively employed for the determination of metal ions because of its low cost, high selectivity, and ease of operation. 5 However, direct determination of trace heavy metal ions by FAAS is limited because of matrix interferences and insufficient sensitivity of instruments.…”

Simultaneous determination of Pb and Cd in seafood by ICP OES with on-line pre-concentration by solid phase extraction with amberlite XAD-4 after complex formation with DDTP

“…The proper choice of an adsorbent material for SPE can provide simple operation and more flexible working conditions. The XAD-4 resin frequently has been proposed for the pre-concentration of several elements (Dos Santos et al 2005;Uzun et al 2001;Dev et al 1999;Ramesh et al 2002). Dos Santos et al (2005) have used the ammonium salt of the O,O-diethyldithiophosphate (DDTP) for the determination on line of Cd in biological samples by FAAS.…”