Kobalt(II)’nin Amberlit XAD-4/SCHD Reçinesi Kullanılarak Yeni bir Katı-Faz Ekstraksiyon Yöntemi ile Zenginleştirilmesi ve Spektrofotometrik Tayini

Yıl 2018, Cilt: 8 Sayı: 2, 396 - 409, 31.07.2018

Berrin Topuz , Nazlı Baldan Pakdil , Aysel Solmaz

https://doi.org/10.17714/gumusfenbil.363745

Öz

Bu
çalışmada, çevresel su numunelerinden eser miktardaki Co(II)’nin, Amberlit
XAD–4-N,N-bis(salisilidin)-siklohegzandiamin (SCHD) reçinesi kullanılarak katı
faz ekstraksiyon yöntemiile ön deriştirilmesi, ayrılması ve UV-VIS
spektrofotometrik yöntemle tayini için yeni bir metot önerilmiştir. Bu amaçla, Co(II)
için XAD–4-SCHD reçinesi ile sorpsiyon ve elüsyon parametreleri (pH, elüent
tipi ve konsantrasyonu, elüent hacmi, maksimum numune hacmi, numune akış hızı,
elüent akış hızı) incelenmiştir. Box Behnken Dizayn Programı kullanılarak katı faz
ekstraksiyonu ile Co(II)’nin geri kazanımı için sorpsiyon ve elüsyon bağımsız
değişkenleri optimize edilmiştir. Önerilen yöntemin kalibrasyon grafiğinin 0.06–3 μgmL⁻¹
aralığında doğrusal olduğu tespit edilmiştir (r² = 0.9980). Önderiştirme
faktörü ve gözlenebilme sınırı sırasıyla 100 ve 8.4 µgL^-1’dir. Yöntemin
doğruluğu, sertifikalı standart su numunesinin (NW-TMDA-70.2) analizi ile
kontrol edilerek % 90’ın üzerinde geri kazanım değerleri elde edilmiştir.
Ayrıca, bu çalışmada önerilen metot kullanılarak eser miktarda Co(II) içeren
farklı çevresel su numunelerinden elde edilen ölçüm sonuçları, ICP-MS ölçüm
sonuçları ile benzer bulunmuştur. Önerilen metot, çevresel su numunelerinde
eser miktardaki Co(II)’nin tayini için başarıyla uygulanmıştır.

Anahtar Kelimeler

Co(II), Amberlit XAD-4/SCHD reçinesi, Box-behnken dizayn, Katı-faz ekstraksiyonu, UV-VIS spektrofotometri

Preconcentration of Co(II) by a New Solid-PhaseExtraction Method using Amberlite XAD-4/SCHD Resin and Spectrophotometric Determination

Öz

The study presents a novel method for the separation/enrichmentand UV-VIS
spectrophotometric determination of traceCo(II) from environmental water samples
using Amberlite XAD–4 resin modified with
N,N-bis(salisilidin)-siklohegzandiamin (SCHD). For this aim, sorption and elütion
parameters of Co(II) (pH, eluent type and concentration, eluent volume, maximum
sample volume, sample flow rate, eluent flow rate) with XAD–4-SCHD resin were investigated.
Sorption and elution independent variables were optimized using Box Behnken
Design (BBD) program for there covery of Co(II) by solid phase extraction. Calibration
graph was linear in the range of 0.06–3 μgmL⁻¹(r² = 0.9980).
Preconcentration factor and dedection limit of the proposed methods were100 and
8,4µgL^-1, respectively. The accuracy of the method was checked by analysis
of the certified standard water sample (NW-TMDA-70.2), and recovery values above
90% were obtained. In addition, using the proposed method in this study, the measurement
results obtained from different environmental water samples containing trace amounts
of Co(II) were found to be similar to the ICP-MS measurement results. The proposed method was successfully applied for the determination
of trace amount of Co(II) in
environmentalwatersamples.

 

Anahtar Kelimeler

Amberlite XAD-4/SCHD resin, Box-behnken design, Co(II), Solid phaseextraction, UV-VIS spectrophotometry

Kaynakça

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