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    Anoxybacillus sp. SO B1 immobilized Amberlite XAD-16 for solid phase preconcentration of Cu(II), Pb(II) and their determinations by flame atomic absorption spectrometry
    (Bioremediation Journal, 2016) Varhan, Elif; Özdemir, Sadin; Dolak, İbrahim; Okumuş, Veysi; Dündar, Abdurrahman; Ziyadanoğulları, Berrin; Aksoy, Zehra; Onat, Ruken
    A new method for the determination of Cu(II) and Pb(II) by flame atomic absorption spectrometry (FAAS) after preconcentrating on a column containing Anoxybacillus sp. SO B1–immobilized Amberlite XAD-16 was developed. The functional groups of Anoxybacillus sp. SO B1 immobilized on Amberlite XAD-16 were characterized in KBr tablets by Fourier transform infrared (FT-IR) spectrometry. Various parameters such as pH, amount of the adsorbent, eluent type and volume, and flow rate of the sample solution were studied. The optimum pH values of quantitative sorption for Cu(II) and Pb(II) were found to be pH 7.0 and 5.0 and Cu(II) and Pb(II) ions could be quantitatively eluted with 5.0 ml of 1.0 mol L¡1 HCI and 10.0 ml of 0.25 mol L¡1 HNO3, respectively. Recoveries of Cu(II) and Pb(II) were found to be 100.9 § 1.57% and 100.3 § 0.49% (N D 5), the limits of detection of Cu(II) and Pb(II) in the determination by FAAS (3 s, N D 10) were found to be 0.8 and 1.6 mg L¡1, respectively. The proposed enrichment method was applied for metal ion determination from water samples such as two parts of Tigris River water in Diyarbakır and Elazı_g, Lake of Hazar in Elazı_g, and tap water in Diyarbakır. Furthermore, the accuracy of the proposed method was verified by studying the analytical recovery and by analyzing certified reference material (NCS-DC 73350 leaves of poplar).
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    Green ion–imprinted polymers
    (Elsevier, 2024) Canpolat, Gurbet; Dolak, İbrahim
    The increasing concern over the environmental impact of traditional chemical synthesis methods has driven the need for environmentally friendly and sustainable alternatives. The principles of green chemistry have been established to guide the design of products and processes that minimize hazardous substances. Molecular imprinting, a rapidly growing field, offers a powerful synergy with green chemistry, allowing for the development of effective and sustainable chemical products for the selective recognizing of both ions and molecules. However, limited research has evaluated the compatibility of ion-imprinted polymers (IIPs) with the principles of green chemistry. This chapter provides a thorough overview of environmentally friendly IIP synthesis alternatives, including the use of greener reagents (dummy templates, functional monomers, porogenic solvent). The chapter highlights the use of computer-based simulation to predict functional monomers, identify binding methods, and assess specificity and demonstrates the use of green approaches in the development of selective IIPs for applications in sensing, separation, and purification. This review aims to offer researchers a fresh outlook on ion imprinting technology and inspire further innovative developments in the field of ion separation and purification. © 2024 Elsevier Inc. All rights are reserved including those for text and data mining AI training and similar technologies.
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    Green nanomaterials in sample pre-treatment processes
    (Elsevier B.V., 2024) Canpolat, Gurbet; Dolak, İbrahim; Keçili, Rüstem; Hussain, Chaudhery Mustansar
    Extraction is an important step in sample pre-treatment processes for the efficient removal of an analyte of interest from a complex matrix. Removal of harmful pollutants from contaminated food, environmental, and biological samples is a crucial demand. Green extraction techniques have been developed as greener and more sustainable alternatives to traditional sample preparation methods. These techniques aim to improve the selectivity and sensitivity of analytical methods and simultaneously reducing the harmful side effects of conventional extraction techniques. Green nanomaterials have advanced extraction technologies due to their unique physicochemical features and facile surface functionalization. This chapter presents the synthesis of green nanomaterials and their use in analytical applications, with a special focus on their roles as sorbent materials. © 2024