İlaç ve çevre numunelerinde eser miktardaki CU(II) iyonunun seçici UV-VIS spektrofotometrik tayini
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Tarih
2019
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info:eu-repo/semantics/openAccess
Özet
Mikrokristal naftalin (MN) üzerinde pH 3.0-8.0 aralığında potasyum 2,6-dimetilmorfolinditiyokarbamat (KMDMMDTC) ligantı kullanılarak büyük hacimli sulu çözeltilerden Cu(II) iyonu önderiştirilmiştir. Cu(II)- DMMDTC kompleksi içeren MN, 5 mL asetonda çözülerek Cu(II) iyonu kör çözeltiye karşı 431 nm’de spektrofotometrik metot ile tayin edildi. pH, numune çözeltisinin hacmi, DMMDTC yüklü MN miktarı, çalkalama süresi, yabancı iyon etkisi gibi katı faz ekstraksiyon (SPE) metodunun temel parametreleri incelendi. Aseton çözeltisinde 0,09 µgmL-1 tayin sınırı ile lineer kalibrasyon aralığı 0,05-5,0 µgmL-1’dir. Sudaki potansiyel yabancı iyonların etkisi araştırıldı ve önerilen metot ilaç ve çevresel numunelerden Cu(II) iyonunun tayini için uygulanarak % 90 üzerinde geri kazanım değerleri elde edildi. Doğruluk, sertifikalı referans madde NW-TMDA-70.2 analizi ve geri kazanım deneyleri ile değerlendirildi.
Cu(II) ion was preconcentrated from a large volume of its aqueous solutions using potassium 2,6- dimethylmorpholinedithiocarbamate (KDMMDTC) as reagent on microcrystalline naphthalene (MN) in the pH range of 3.0-8.0. After filtration, the solid mass consisting of the Cu(II) complex and MN was dissolved in 5.0 mL of acetone and copper was determined by spectrophotometric method at 431 nm against the reagent blank. The main factors affecting the sorption efficiency of solid-phase extraction (SPE) (such as pH, volume of sample solution, amount of microcrystalline naphthalene coated with dithiocarbamate, effect of some foreign ions and shaking time) were studied. The linear calibration range for copper was 0.05-5.0 µgmL-1 in acetone solution with a detection limit of 0.09 µgmL-1. The effect of potential interfering ions was investigated with the proposed method which was applied to the determination of Cu(II) ion in Pharmaceutical and environmental samples and recovery values above 90% was obtained. The accuracy was assessed through the analysis of certified reference materials NW-TMDA-70.2 and recovery experiments.
Cu(II) ion was preconcentrated from a large volume of its aqueous solutions using potassium 2,6- dimethylmorpholinedithiocarbamate (KDMMDTC) as reagent on microcrystalline naphthalene (MN) in the pH range of 3.0-8.0. After filtration, the solid mass consisting of the Cu(II) complex and MN was dissolved in 5.0 mL of acetone and copper was determined by spectrophotometric method at 431 nm against the reagent blank. The main factors affecting the sorption efficiency of solid-phase extraction (SPE) (such as pH, volume of sample solution, amount of microcrystalline naphthalene coated with dithiocarbamate, effect of some foreign ions and shaking time) were studied. The linear calibration range for copper was 0.05-5.0 µgmL-1 in acetone solution with a detection limit of 0.09 µgmL-1. The effect of potential interfering ions was investigated with the proposed method which was applied to the determination of Cu(II) ion in Pharmaceutical and environmental samples and recovery values above 90% was obtained. The accuracy was assessed through the analysis of certified reference materials NW-TMDA-70.2 and recovery experiments.
Açıklama
Anahtar Kelimeler
İlaç ve Çevresel Numune Analizi, Katı Faz Ekstraksiyonu, UV-VIS Spektrofotometrik Metot, Eser CU(II) Tayini, Pharmaceutical and Environmental Sample Analysis, Solid Phase Extraction, UV-VIS Spectrophotometric Method, Trace CU(II) Determination
Kaynak
Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
12
Sayı
1
