Application of Poly 1,8-diaminonaphthalene/multiwalled carbon nanotubes-COOH hybrid material as an efficient sorbent for trace determination of cadmium and lead ions in water samples

Abstract

Poly 1,8-diaminonaphthalene/multiwalled carbon nanotubes-COOH hybrid material as an effective sorbents in solid phase extraction has been developed for the separation and preconcentration of Cd(II) and Pb(II) at trace levels in environmental water samples. The results indicate that the novel nanocomposite show a high affinity for these heavy metals due to the presence of several good extractive sites, which are introduced to the synthesized nanocomposite The maximum adsorption capacity of the synthesized sorbent for cadmium and lead ions was found to be 101.2 and 175.2 mg g(-1) , respectively. The detection limits of this method were 0.09 and 0.7 ng ml(-1) for Cd(II) and Pb(II), respectively.

Electrochemical determination of inorganic mercury and arsenic—A review

“…Atomic absorption spectrophotometry is a standard analytical technique in which trace metals are detected individually in solution form Behbahani et al 2014b;Behbahani et al 2014c;Behbahani et al 2014d;Behbahani et al 2014e;Behbahani et al 2014f;Behbahani et al 2014g;Ebrahimzadeh and Behbahani 2013;Fouladian and Behbahani 2014;Nabid et al 2014;Salarian et al 2014). The two modes, Flame atomic absorption spectrophotometry (FAAS) and Graphite furnace atomic absorption spectrophotometry (GFAAS), are based on the same principle.…”

Application of 1-(2-pyridylazo)-2-naphthol-modified nanoporous silica as a technique in simultaneous trace monitoring and removal of toxic heavy metals in food and water samples

“…The recoveries for these elements were very satisfactory. In addition, PAN-MCM-48 showed high tolerance to interferences from the matrix ions, and finally, the important features of the proposed method were its high adsorption capacity, good preconcentration factor, and low detection limit which is distinctive among other solid-phase extraction methods (Nabid et al 2014;Behbahani et al 2013cBehbahani et al , 2014d. The proposed method was applicable to the determination of trace amount of these heavy metals in real water and food samples.…”

“…Among numbers of methods such as liquid-liquid extraction (Komjarova and Blust 2006;Wei et al 2003;Behbahani et al 2014c), chemical precipitation (Matlock et al 2002a(Matlock et al , 2002b, ion exchange (Akcin et al 2011), reverse osmosis adsorption (Akieh et al 2008), and solid-phase extraction (SPE), solid-phase extraction has attracted a c o n s i d e r a b l e a m o u n t o f i n t e r e s t s f o r t h e preconcentration of toxic heavy metals (Tuzen et al 2008;Behbahani et al 2014dGhaedi et al 2008Ghaedi et al , 2007, due to higher efficiency and low consumption of pure organic solvents. This method is simple, efficient, selective, cost-effective, and it is easy to automate without need for emulsion, and it is also safe, regarding to the reagents that has employed (Nabid et al 2014). According to the nature of this method, the key point is choosing the appropriate adsorbent, since this factor could affect selectivity and sensitivity of the method (Behbahani et al 2014h).…”

Trace monitoring of silver ions in food and water samples by flame atomic absorption spectrophotometry after preconcentration with solvent-assisted dispersive solid phase extraction

“…Preconcentration is a very important issue for achievement of low detection limits (Behbahani et al 2014i, j;Salarian et al 2014;Ebrahimzadeh and Behbahani 2013). Several procedures have been developed for these purposes such as liquid-liquid extraction (LLE) (Silvestre et al 2009), liquid phase microextraction (LPME) (Behbahani et al 2013bHossienpoor-Zaryabi et al 2014;Naeemullah et al 2013Naeemullah et al , 2014Unsal et al 2014) co-precipitation (Saracoglu et al 2003;Doner and Ege 2005), and solid phase extraction (SPE) (Bagheri et al 2012a, b;Nabid et al 2012Nabid et al , 2014Ghorbani-Kalhor et al 2014;Behbahani et al 2015;Omidi et al 2014a, b). However, some of these pretreatment methods need large amounts of sample and/or organic solvents, are time-consuming and expensive, and have unsatisfactory enrichment factors.…”