Mikroekstraksiyon Yöntemi ile Su Numunelerinde Paladyumun Spektrofotometrik Tayini

Year 2022, , 285 - 295, 15.06.2022

Zekeriyya Bahadır

https://doi.org/10.31466/kfbd.1039969

Abstract

Bu çalışmada, Pd2+ iyonlarının iyodür (I-) ile PdI42- kompleksi oluşturarak, heksadesiltrimetilamonyum bromür (CTAB) yardımıyla kloroform fazına taşındığı ve spektrofotometre ile tayin edildiği bir mikroekstraksiyon yöntemi geliştirilmiştir. Ekstraksiyon verimliliğini etkileyen, pH, heksadesiltrimetilamonyum bromür konsantrasyonu, potasyum iyodür konsantrasyonu, kloroform hacmi ve yabancı iyon etkisi gibi deneysel parametreler optimize edilmiştir. Optimize edilen şartlarda paladyum için tayin sınırı 19 µg L-1, bağıl standart sapma %2,1 ve zenginleştirme faktörü ise 10 olarak bulunmuştur. Geliştirilen metodun doğruluğu, gerçek numunelere ekleme/geri kazanım testleriyle belirlenmiştir. Bu metot %94-106 geri kazanım değerleriyle, dere ve deniz suyu numunelerinde paladyum ekstraksiyonu ve tayini için başarıyla uygulanmıştır.

Keywords

Heksadesiltrimetilamonyum bromür, mikroekstraksiyon, paladyum

Supporting Institution

Giresun Üniversitesi Bilimsel Araştırma Projeleri Birimi tarafından desteklenmiştir

Project Number

Proje no: 250221-24

Spectrophotometric Determination of Palladium in Water Samples by Microextraction Procedure

Abstract

A microextraction method has been developed for palladium based on the formation of an ion associate (PdI42-) between Pd2+ and iodide (I-), with the aid of hexadecyltrimethylammonium bromide as ligand, which is extractable to chloroform and determined by a spectrophotometer. Experimental parameters affecting the extraction efficiency such as pH, hexadecyltrimethylammonium bromide concentration, potassium iodide concentration, chloroform volume and foreign ion effect were optimized. The detection limit for palladium under optimized conditions was 19 µg L-1, the relative standard deviation was 2.1%, and the enrichment factor was 10. The accuracy of the developed method was determined by addition/recovery tests to real samples. With 94-106% recovery values, this method has been successfully applied for the extraction and determination of palladium in stream and sea water samples.

Keywords

Hexadecyltrimethylammonium bromide, microextraction, palladium

Project Number

Proje no: 250221-24

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