Determination of Lead in Urine by Slotted Quartz Tube (SQT) - Flame Atomic Absorption Spectrometry (FAAS) Following Preconcentration by Dispersive Liquid Phase Microextraction (DLLME)

POLAT N.

ANALYTICAL LETTERS, cilt.55, sa.1, ss.47-56, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 55 Sayı: 1
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1080/00032719.2021.1914645
  • Dergi Adı: ANALYTICAL LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Food Science & Technology Abstracts, Metadex, Veterinary Science Database, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.47-56
  • Anahtar Kelimeler: Dispersive liquid phase microextraction (DLLME), flame atomic absorption spectrometry (FAAS), lead, slotted quartz tube (SQT), urine, TRACE LEVELS, BLOOD LEAD, CADMIUM, WATER, EXPOSURE, EXTRACTION, SAMPLES, COPPER, LEVEL
  • Ankara Üniversitesi Adresli: Evet

Özet

This study was aimed to develop a sensitive and accurate method for the determination of lead in urine. Dispersive liquid-liquid microextraction (DLLME) was applied prior to slotted quartz tube - flame atomic absorption spectrometry (SQT-FAAS). Dithizone was employed in generating water-insoluble forms of lead to isolate the analyte in the microextraction. All variables having a direct effect on extraction and instrumental outputs were systematically optimized. The detection limit was 0.5 mu g L-1 which indicates a 305-fold enhancement compared to conventional FAAS. The wide linear range is between 2.0 and 250 mu g L-1 with a high regression coefficient (0.9998). Urine samples were used in order to examine the practical application of the developed method. The recovery values were between 98.2 and 107.0%.