Lead is one of the most hazardous toxic heavy metal ions from industrial wastewater. The removal of Pb(II) from an aqueous environment is an extremely essential topic due to acquiring...
Highlights• Novel PVA nanofibers containing Malva Sylvestris L. seed extract was fabricated.• Electrospinning technique was used to produce nanofibers.• Nanofiber diameters were 181.3 -244.3 nm.• Nanofibers are expected to be beneficial for medical applications.
In this study, a new sorbent is synthesized using surface imprinting technique. Cu(II)-imprinted multiwalled carbon nanotube sorbent (Cu(II)-IMWCNT) is used as the solid phase in the solid-phase extraction method. After the preconcentration procedure, Cu(II) ions are determined by high-resolution continuum source atomic absorption spectrometry. A total of 0.1 mol L À1 ethylenediaminetetraacetic acid (EDTA) is used to remove Cu(II) ions from the sorbent surface. The optimum experimental conditions for effective preconcentration of Cu(II), parameters such as pH, eluent type and concentration, flow rate, sample volume, sorbent capacity, and selectivity are investigated. The synthesized solid phase is characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. The maximum adsorption capacities of Cu(II)-IMWCNT and non-imprinted solid phases are 270.3 and 14.3 mg g À1 at pH 5, respectively. Under optimum experimental conditions for Cu(II) ions, the limit of detection is 0.07 μg L À1 and preconcentration factor is 40. In addition, it is determined to be reusable without significant decrease in recovery values up to 100 adsorption-desorption cycles. Cu(II)-IMWCNT have a high stability. To check the accuracy of the developed method, certified reference materials, and water samples are analyzed with satisfactory analytical results.
Bu derleme makalede, zenginleştirme yöntemlerinden biri olan katı faz özütleme yöntemi kullanılarak, sulu çözeltilerdeki eser metallerin tayininde kullanılmak üzere baskılama tekniği ile farklı adsorbanların sentezi ve uygulama çalışmaları araştırılmıştır. Son yıllarda baskılama tekniği kullanılarak elde edilen katı fazlar kendilerine özgü özellikleri nedeniyle çok fazla ilgi görmektedir. Bu amaçla, adsorpsiyon kapasitesi, etkinliği, seçiciliği artırılmış ve zenginleştirme faktörü yüksek, tekrar tekrar kullanılabilen, analitik performansının iyi ve sonuçları tekrarlanabilir olan adsorbanlar elde edilebilmektedir. Bu yöntem ile yüzey baskılanmış, moleküler veya iyon baskılanmış ve sahte moleküler baskılanmış çok çeşitli katı fazlar sentezlenmiş ve litaratüre bu alanda yeni çalışmalar kazandırılmıştır. Bu doğrultuda, yaygın olarak kullanılan baskılanmış adsorbanların literatür araştırmaları özetlenmiştir.
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