Su örneklerindeki Pb(II)-vitamin B6 komplekslerinin Bulutlanma Noktası Ekstraksiyonu

Öz

Bu çalışma esas olarak kurşun iyonlarının bulutlanma noktası ekstraksiyonu (CPE) prosedürü ile zenginleştirme ve alevli atomik absorpsiyon spektrometrik tayinine odaklanmıştır. Yöntemde, Pb2+ ve B6 vitamininin, önderiştirilmesinden önce, bulutlanma noktası ekstraksiyonu ile kompleksleştirilmesi sağlanmıştır. Çözelti pH'sı, yüzey aktif madde ve B6 vitamini konsantrasyonları, girişim yapan iyonlar, inkübasyon sıcaklığı ve numune hacmi optimize edilmiştir. Yöntemin gözlenebilme sınırı (LOQ) ve tayin sınırı (LOD) değerleri sırasıyla 7,88 ve 25,99 olarak bulunmuştur. CPE yönteminin validasyonu, doğal kaynak suları ve maden suları gibi su örneklerine analit eklenmesi (bilinen Pb2+ konsantrasyonu) ile sağlanmıştır.

Anahtar Kelimeler

• Bulutlanma noktası ekstraksiyonu
• Pb2+
• Seçicilik
• Doğal sular
• B6 Vitamini

Cloud Point Extraction Of Pb (II)-Vitamin B6 Complex In Aqueous Samples

Öz

This study mainly centered on the preconcentration and flame atomic absorption spectrometric determination of lead ions by cloud point extraction (CPE) procedure. Complexation of Pb2+ and vitamin B6 prior to its preconcentration by cloud point extraction was achieved in the method. The solution pH, surfactant and vitamin B6 concentrations, interfering ions, incubation temperature and sample volume were optimized. The limit of quantication (LOQ) and limit of detection (LOD) values of the method were found as 7.88 and 25.99 respectively. The validation of the CPE method was achieved by the analyte adding (known concentration of Pb2+) to water samples such as natural spring waters and mineral waters.

Anahtar Kelimeler

• Cloud point extraction
• Pb2+
• Selectivity
• Natural water
• Vitamin B6

Kaynakça

1. [1] Ravi Kumar K., Shyamala P., “Catanionic mixed micellar cloud point extraction of metal ions in coal fly ash samples and their determination by CS-ETAAS’’ Journal of Environmental Chemical Engineering, 7, 103119-103124, 2019
2. [2] Mohammadi S.Z., Shamspur T., Afzali D., Taher M. A., Baghelani Y. M., “Applicability of cloud point extraction for the separation trace amount of lead ion in environmental and biological samples prior to determination by flame atomic absorption spectrometry’’ Arabian Journal of Chemistry, 9, 610-615, 2016
3. [3] Blanchet-Chouinard G., Larivière D., “Determination of Pb in environmental samples after cloud point extraction using crown ether” Talanta, 179, 300-306, 2018
4. [4] Mortada W. I., “Recent developments and applications of cloud point extraction: A critical review” Microchemical Journal, 157, 105055-105068, 2020
5. [5] Mortada W.I., Kenawy I.M.M, Abdel-Rhman M.H., El-Gamal G.G., Moalla S.M.N., “A new thiourea derivative [2-(3-ethylthioureido)benzoic acid] for cloud point extraction of some trace metals in water, biological and food samples” Journal of Trace Elements in Medicine and Biology, 44, 266-273, 2017
6. [6] Talpur S., Kazi T.G., Afridi H.I., Talpur F.N., Nizamani S., Lashari A., Akhtar A., Khan M., “Ultrasonically dispersed ionic liquid-based microextraction of lead in biological samples of malnourished children prior to analysis by flame atomic absorption spectrometry” Journal of AOAC International, 101, (3), 883–890, 2018
7. [7] Vatankhah G., Ebrahimi M., Kahani M., “Determination of trace amount of lead (11) and cadmium (11) ions in real water and real samples by flame atomic absorption spectrometry after cloud point extraction using selective synthesis ligand2-(3- indolyl)–4,5 di phynyl imidazole” Eurasian Journal of Analytical Chemistry, 2, (7), 987-1000, 2017
8. [8]https://www.dow.com/content/dam/dcc/documents/en-us/productdatasheet/119/119-01915-01-tergitol-np-7-surfactant-tds.pdf.

9. [9] Rihana -Abdallah A., Li Z., Lanigan K. C., “Using cloud point extraction for preconcentration and determination of ıron, lead, and cadmium in drinking water by flame atomic absorption spectrometry” Analytical Letters, 55, (8), 1296–1305, 2021
10. [10] E.L. Silva and P. Santos Roldan, “Simultaneous flow injection preconcentration of lead and cadmium using cloud point extraction and determination by atomic absorption spectometry”, Journal of Hazardous Materials 2009 Art. no. 161 pp 142–147.