scholarly journals Synthesis of Pb(ii)-imprinted poly(methacrylic acid) polymeric particles loaded with 1-(2-pyridylazo)-2-naphthol (PAN) for micro-solid phase preconcentration of Pb2+ on-line coupled to flame atomic absorption spectrometry

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 33001-33011 ◽  
Author(s):  
Andréia M. Basaglia ◽  
Marcela Z. Corazza ◽  
Mariana G. Segatelli ◽  
César R. T. Tarley
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Methacrylic Acid ◽  
Solid Phase ◽  
Absorption Spectrometry ◽  
Imprinted Polymer ◽  
Flame Atomic Absorption ◽  
Polymeric Particles ◽  
On Line

A new ion-selective imprinted polymer based on poly(methacrylic acid) loaded with 1-(2-pyridylazo)-2-naphthol (PAN) (IIP/PAN) has been synthesized, characterized and evaluated for the preconcentration of Pb2+ with on-line determination by flame atomic absorption spectrometry.

scholarly journals An On-Line Flow-Injection Sorbent Extraction System Coupled with Flame Atomic Absorption Spectrometry for Thallium Determination Using a PTFE Turning-Packed Column

Separations ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 22
Author(s):  
Viktoria Kazantzi ◽  
Aristidis Anthemidis
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flow Injection ◽  
Flame Atomic Absorption Spectrometry ◽  
Solid Phase ◽  
Absorption Spectrometry ◽  
Extraction System ◽  
Flame Atomic Absorption ◽  
Relative Standard ◽  
On Line

A novel time-based flow-injection–solid-phase extraction system (FI–SPE) coupled with flame atomic absorption spectrometry (FAAS) for automatic on-line preconcentration and determination of thallium was developed. The efficiency of poly-tetrafluoroethylene (PTFE) turnings packed into a column as sorbent material was investigated for thallium extraction. Total thallium was determined by oxidizing thallium(I) to thallium(III), adding bromine in acidic solution. The formed [TlBr4]− anionic bromo complex was retained onto the PTFE turnings by on-line mixing with sodium diethyl dithiocarbamate (DDTC). The preconcentrated Tl(III)-DDTC complex was then effectively eluted with methyl isobutyl ketone (MIBK) and introduced into the flame atomizer for measurement and quantification. The column proved to be effective, stable, and reproducible, with a long lifetime. The enrichment factor was 105 for 60 s preconcentration time, and the sampling frequency 40 h−1. The detection limit was 1.93 μg L−1, and the relative standard deviation (RSD) was 3.2% at 50.0 μg L−1 concentration. The accuracy of the proposed method was estimated by analyzing certified reference materials and environmental and biological samples.

scholarly journals Determination of lead in water resources by flame atomic absorption spectrometry after pre-concentration with ammonium pyrrolidinedithiocarbamate immobilized on surfactant-coated alumina

2007 ◽  
Vol 72 (6) ◽  
pp. 585-590 ◽  
Author(s):  
Morteza Talebi ◽  
Homeyra Safigholi
Keyword(s):  
Water Resources ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Solid Phase ◽  
Collection Efficiency ◽  
Absorption Spectrometry ◽  
Flame Atomic Absorption ◽  
Ammonium Pyrrolidinedithiocarbamate

Arapid, simple, and sensitive procedure based on modified solid phase extraction was developed for the pre-concentration and determination of trace amount of lead in water resources. Lead was reacted with ammonium pyrrolidinedithiocarbamate (APDC) to make a complex. The complex was then collected in a column packed with surfactant-coated alumina. The parameters affecting the collection efficiency and desorption rate of the lead complexes from the column were investigated and optimized. The collection efficiency of the lead complex on the adsorbent was excellent under the optimized conditions. The results obtained from the recovery test showed the capability and reliability of the method for the analysis of trace amounts of lead. The proposed pre-concentration procedure made it possible to apply conventional flame atomic absorption spectrometry (FAAS) for the sensitive determination of trace amounts of lead in water resources. .

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