A metal-organic framework sustained by a nanosized Ag12 cuboctahedral node for solid-phase extraction of ultra traces of lead(II) ions

Salarian, Mani; Ghanbarpour, A.; Behbahani, Mohammad; Bagheri, Saman; Bagheri, Abbas

doi:10.1007/s00604-014-1200-2

Cited by 80 publications

(32 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the combined effect resulted in an increasing amount of Pb 2+ accumulated on the MWNT/GCE surface [38,39]. Additionally, MWNTs were highly permeable in water and have a distinct film-generation capacity.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical determination of lead(II) ions in hot spring water based on a multi-walled carbon nanotube-modified glassy carbon electrode

Li¹,

Economics²

2018

International Journal of Electrochemical Science

View full text Add to dashboard Cite

The present study reports the fabrication of a carbon nanotube/Nafion composite film (MWNT/Nafion)-modified glassy carbon electrode (GCE) along with its excellent performance in the analysis of Pb 2+ (favorable catalytic activity, large surface area, high cation exchange capacity, and strong adsorption ability). The stripping peak current of Pb 2+ was greatly increased at the MWNT/Nafion-coated GCE compared with the bare and Nafion-coated GCEs. The optimization of different parameters was also carried out, including optimization of the accumulation time, accumulation potential, supporting electrolyte, and MWNT/Nafion suspension volume. Therefore, our developed electrode can be used in the analysis of Pb 2+ in real hot spring water samples.

show abstract

Section: Resultsmentioning

confidence: 99%

Electrochemical determination of lead(II) ions in hot spring water based on a multi-walled carbon nanotube-modified glassy carbon electrode

Li¹,

Economics²

2018

International Journal of Electrochemical Science

View full text Add to dashboard Cite

show abstract

“…To solve this problem, preconcentration/ separation procedures have been proposed. 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).…”

Section: Introductionmentioning

confidence: 97%

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

Omidi

Behbahani

Shahtaheri

et al. 2015

Environ Monit Assess

Self Cite

View full text Add to dashboard Cite

In this research, a new sample treatment technique termed solvent-assisted dispersive solid phase extraction (SADSPE) was developed. The new method was based on the dispersion of the sorbent into the sample to maximize the contact surface. In this approach, the dispersion of the sorbent at a very low milligram level was achieved by injecting a mixture solution of the sorbent and disperser solvent into the aqueous sample. Thereby, a cloudy solution formed. The cloudy solution resulted from the dispersion of the fine particles of the sorbent in the bulk aqueous sample. After extraction, the cloudy solution was centrifuged and the enriched analytes in the sediment phase dissolved in ethanol and determined by FAAS. Under the optimized conditions, the detection limit for silver ions was 0.8 μg L(-1). The relative standard deviations for six separate extraction experiments for determination of 5 and 200 μg L(-1) of silver ions was 3.4 and 3.1 %. The preconcentration factor was found to be 61.7. SADSPE was successfully applied for trace determination of silver ions in water and food samples.

show abstract

“…Lead concentration in natural waters is typically between 2 and 10 ng mL −1 for which the upper limit recommended by World Health Organization is less than 10 ng mL −1 (Mayer and Wilson 1998). Determination of trace heavy metals constitutes one of the most important topics in analytical chemistry (Behbahani et al 2013a(Behbahani et al , 2014aSalarian et al 2014;Kalate Bojdi et al 2014;Behbahani et al 2014b). This topic is also applied in different areas such as biology and medicine (da Silva et al 2004).…”

Section: Introductionmentioning

confidence: 98%

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

Abolhasani

Behbahani

2014

Environ Monit Assess

Self Cite

View full text Add to dashboard Cite

Solid-phase extraction is one the most useful and efficient techniques for sample preparation, purification, cleanup, preconcentration, and determination of heavy metals at trace levels. In this paper, functionalized MCM-48 nanoporous silica with 1-(2-pyridylazo)-2-naphthol was applied for trace determination of copper, lead, cadmium, and nickel in water and seafood samples. The experimental conditions such as pH, sample and eluent flow rate, type, concentration and volume of the eluent, breakthrough volume, and effect of coexisting ions were optimized for efficient solid-phase extraction of trace heavy metals in different water and seafood samples. The content of solutions containing the mentioned heavy metals was determined by flame atomic absorption spectrometry (FAAS), and the limits of detection were 0.3, 0.4, 0.6, and 0.9 ng mL(-1) for cadmium, copper, nickel, and lead, respectively. Recoveries and precisions were >98.0 and <4%, respectively. The adsorption capacity of the modified nanoporous silica was 178 mg g(-1) for cadmium, 110 mg g(-1) for copper, 98 mg g(-1) for nickel, and 210 mg g(-1) for lead, respectively. The functionalized MCM-48 nanoporous silica with 1-(2-pyridylazo)-2-naphthol was characterized by thermogravimetry analysis (TGA), differential thermal analysis (DTA), transmission electron microscopy (TEM), Fourier transform infrared spectrometry (FT-IR), X-ray diffraction (XRD), elemental analysis (CHN), and N2 adsorption surface area measurement.

show abstract

A metal-organic framework sustained by a nanosized Ag12 cuboctahedral node for solid-phase extraction of ultra traces of lead(II) ions

Cited by 80 publications

References 30 publications

Electrochemical determination of lead(II) ions in hot spring water based on a multi-walled carbon nanotube-modified glassy carbon electrode

Electrochemical determination of lead(II) ions in hot spring water based on a multi-walled carbon nanotube-modified glassy carbon electrode

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

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

Contact Info

Product

Resources

About