Determination of Lead in Water Samples by GFAAS after Collection on Montmorillonite with Slurry Introduction

Abstract

In this study, a highly accurate, fast and practical separation/enrichment technique is described to determine the Pb in tap water samples by graphite furnace atomic absorption spectrometry. For this purpose, at first, Pb was collected on montmorillonite by batch technique, the supernatant was decanted and the solid phase was slurried in a mixture of 0.1% Triton X-114 and 0.1 mol L -1 HNO3 then directly introduced into graphite furnace without elution. Since the elution step was not applied, the method was simpler and faster compared to conventional techniques. The risks of elution step on the precision and recovery were eliminated. Up to 50-fold enrichment could be obtained by this method. The limit of detection (3δ, N = 10) and characteristic concentration of the method for Pb were 0.46 and 1.13 μg L -1 , respectively. In addition, the Pb in water samples (tap and river) collected from different regions of Turkey were determined.

Development of an Analytical Method for the Determination of Lead Based on Local Surface Plasmon Resonance of Silver Nanoparticles

“…The limit of detection and the linear dynamic range of the proposed method for the lead are comparable with other methods. [20][21][22][23][24][25][26][27][28][29] However, in comparison to the solid phase extraction-colorimetry, LSPR technique is faster.…”

Room-temperature Chelate Vapor Generation of Lead Using Ammonium Ο,Ο-Diethyl Dithiophosphate as a Chelating Reagent and Determination by Atomic Fluorescence Spectrometry in Environmental Water Samples

“…2 However, the determination of trace Pb in food and environmental samples usually requires highly sensitive and specific instruments, which include graphite furnace atomic absorption spectrometry (GFAAS) and inductively coupled plasma mass spectrometry (ICP-MS). 3,4 In addition, as one of the most important branches of chemical vapor generation (CVG), 5,6 a quartz tube consisting of a electrothermal vaporizer and a quartz tube atom trap coupled with atomic fluorescence spectrometry (QT-ETV-QTAT-AFS), 7,8 hydride generation (HG) in combination with a heated quartz tube atomizer atomic absorption spectrometer (HG-QTA-AAS), 9 atomic fluorescence spectrometry (HG-AFS) 10 and inductively coupled plasma atomic emission spectrometry (HG-ICP-AES) 11 are alternatives to ETA-AAS or ICP-MS for the determination of trace Pb. CVG based on sodium tetrahydroborate (THB) has been proven to be an effective approach for the determination of some elements due to its high sample introduction efficiency and low detection limit.…”

Separation and Preconcentration of Nickel(II) from Drinking, Spring, and Lake Water Samples with Amberlite CG-120 Resin and Determination by Flame Atomic Absorption Spectrometry

“…9 In the literature, there are many methods for the determination of metal ions at trace levels. Some of them are flame atomic absorption spectroscopy (FAAS), 10 graphite furnace atomic absorption spectroscopy (GFAAS), 11 inductively coupled plasma mass spectroscopy (ICP-MS), 12 atomic fluorescence spectroscopy (AFS), 13 inductively coupled plasma optic emission spectroscopy (ICP-OES). 14 Among them, FAAS is a robust analytical method that gives accurate and precise measurements, and it is ideal for routine laboratory usage.…”