Solid Phase Extraction of Bismuth and Chromium by Rice Husk

Simultaneous adsorption behavior of heavy metals onto microporous olive stones activated carbon: analysis of metal interactions

“…The use of agriculture byproducts such as coconut fruit (Anirudhan and Sreekumari 2011), nuts apricot (Tsibranska and Hristova 2010), beet pulp (Pehlivan et al 2008), stems of tea (Amarasinghe and Williams 2007), rice husk (Bakircioglu et al 2003;Wong et al 2003), pentandra hulls (Madhava-Raoa et al 2006)and olive stones-waste (Alslaibi et al 2015;Baccar et al 2009;Gharib and Ouederni 2005), which are inexpensive, abundantly available, and renewable materials, as precursor for activated carbon production, reduces adsorption processing costs (Bailey et al 1999). The adsorption process offers flexibility in design and operation and in many cases will produce high-quality treated effluent (Fu and Wang 2011;Cui et al 2016).…”

Application of a new ion-imprinted polymer for solid-phase extraction of bismuth from various samples and its determination by ETAAS

“…The solid-phase extraction (SPE) is being utilized for preconcentration of heavy metals owing to its flexibility, economical and environmental-friendly, absence of emulsion, speed and simplicity, sampling in the field, safety and ease of automation [5]. Various sorbents have been used for preconcentration and determination of bismuth ions, such as polymeric materials [6,7], activated carbon [8], amberlite resin [9,10], modified sodium dodecyl sulfonate [11], silica gel [12], modified polyurethane foam [13] chromosorb-107 [14], rice husk [15] and some other solid substances. Unfortunately, these solid adsorbents have poor ion selectivity, which leads to high interference of other existing species with the target metal ions.…”

Solid-phase extraction of Mn(II) and slurry analysis of the sorbent by electrothermal atomic absorption spectrometry

“…However, when the concentration of the analyte is too low to be determined directly and/or interferences due to matrix cannot be eliminated, the use of a separation/preconcentration technique is a necessity. For this purpose, the most commonly and practically applied method is the collection of the analyte on a sorbent using different materials such as polymeric resins, silica, activated carbon with or without chelating groups and subsequently its elution by means of a convenient reagent (Tokman and Akman 2004;Camel 2003;Bakircioglu et al 2003;Wuilloud et al 2000). In all of these separation methods, an elution step was necessarily applied in order to transfer the analyte into solution phase for its measurement.…”