Su Numunelerinde Spektrofotometrik Gadolinyum Tayini

Year 2022, , 1032 - 1040, 15.12.2022

Zekeriyya Bahadır

https://doi.org/10.31466/kfbd.1184568

Abstract

Bu çalışmada, Gd3+ iyonlarının tayini için, katyonik yüzey aktif madde olan heksadesiltrimetilamonyum bromür (HDAB) ve ksilen turuncusu indikatörünün kullanılabilirliği incelenmiştir. Geliştirilen metot için yüksek pH değerlerinde Gd3+ içeren sulu çözeltiye ksilen turuncusu ve HDAB ilave edilerek oluşan kompleksin absorbans değerleri spektrofotometre cihazı ile 250-750 nm aralığında okunmuştur. 580 nm de ksilen turuncusu-Gd3+ kompleksi için elde edilen absorbans değerlerinin, ortama HDAB ilavesinden sonra 624 nm’ye kaydığı gözlemlenmiştir. Optimize şartlarda geliştirilen metodun, gadolinyum için tayin sınırı 120 µg L-1, bağıl standart sapma %1,1 ve kalibrasyon aralığı ise 150-800 µg L-1 olarak bulunmuştur. Metodun doğruluğu ise gerçek su numunelerine ekleme/geri kazanım testleriyle belirlenmiştir. %84-96 geri kazanım değerleriyle, geliştirilen metodun içme, dere ve hastane atık suyu numunelerinde gadolinyum tayini için uygulanabileceği görülmüştür.

Keywords

Gadolinyum, heksadesiltrimetilamonyum bromür, ksilen turuncusu, spektrofotometre, Gadolinium, decyltrimethylammonium bromide, spectrophotometer, xylene orange

Supporting Institution

Giresun Üniversitesi Bilimsel Araştırma Projeleri Birimi

Project Number

FEN-BAP-A-270220-3

Thanks

Bu çalışma, Giresun Üniversitesi (Proje no: FEN-BAP-A-270220-23) Bilimsel Araştırma Projeleri Birimi tarafından desteklenmiştir.

Spectrophotometric Determination of Gadolinium in Water Samples

Abstract

In this study, the usability of the cationic surfactant hexadecyltrimethylammonium bromide (HDAB) and xylene orange indicator were investigated for the determination of Gd3+ ions. For the developed method, xylene orange and HDAB were added to the aqueous solution containing Gd3+ at high pH values, and the absorbance values of the complex formed with the spectrophotometer instrument were recorded in the range of 250-750 nm. It was observed that the absorbance values obtained for the xylene orange-Gd3+ complex at 580 nm shifted to 624 nm after HDAB addition to the medium. The detection limit for gadolinium was 120 µg L-1, the relative standard deviation was 1.1%, and the calibration interval was 150-800 µg L-1 for the method developed under optimized conditions. The accuracy of the method was determined by adding/recovering tests to real water samples. It has been observed that the developed method can be applied for the determination of gadolinium in drinking, stream, and hospital waste water samples, with recovery values of 84-96%.

Keywords

Gadolinium, decyltrimethylammonium bromide, spectrophotometer, xylene orange

Project Number

FEN-BAP-A-270220-3

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