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A new analytical method for lead determination in atmospheric particulate matter by a combination of ultrasound-assisted extraction and supramolecular solvent preconcentration

Beal, Alexandra; Garcia De Almeida, Fernanda; Moreira, Camila A.B.; Santos, Isis M.; Curti, Suzana M.M.; Martins, Leila D. LU and Tarley, Cesar R.T. (2018) In Analytical Methods 10(30). p.3745-3753
Abstract

Air pollution by lead, even in small concentrations, can cause serious health effects. In the atmosphere this element can generally be found in particulate matter (PM), and in general in small concentrations. This work proposes the development of an analytical method for lead determination in inhaled PM based on ultrasound-assisted extraction with subsequent supramolecular solvent based dispersive liquid-liquid microextraction (SM-DLLME), using reverse micelles of dodecanoic acid as an extractor dispersed in a continuous phase of tetrahydrofuran (THF)/water. The rich phase was then analyzed by thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS) coupled on-line to a flow injection analysis (FIA). An analytical curve in... (More)

Air pollution by lead, even in small concentrations, can cause serious health effects. In the atmosphere this element can generally be found in particulate matter (PM), and in general in small concentrations. This work proposes the development of an analytical method for lead determination in inhaled PM based on ultrasound-assisted extraction with subsequent supramolecular solvent based dispersive liquid-liquid microextraction (SM-DLLME), using reverse micelles of dodecanoic acid as an extractor dispersed in a continuous phase of tetrahydrofuran (THF)/water. The rich phase was then analyzed by thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS) coupled on-line to a flow injection analysis (FIA). An analytical curve in the range of 15.0-200.0 μg L-1 (R2 = 0.999), an enrichment factor of 18.1 times and the limits of detection (LOD) and quantification (LOQ) equal to 3.7 and 11.3 μg L-1, respectively, were obtained. The accuracy of the method was successfully attested by comparing with EDX analysis through the paired t-test at a confidence level of 95%. The amount of lead determined in the samples of PM collected in different environments varied from 19.3 to 94.8 ng m-3.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Analytical Methods
volume
10
issue
30
pages
9 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:85050957429
ISSN
1759-9660
DOI
10.1039/c8ay01092g
language
English
LU publication?
yes
id
04cab17f-eb46-49cf-bd3f-e5e799233c6a
date added to LUP
2018-08-15 15:14:45
date last changed
2019-09-17 04:36:59
@article{04cab17f-eb46-49cf-bd3f-e5e799233c6a,
  abstract     = {<p>Air pollution by lead, even in small concentrations, can cause serious health effects. In the atmosphere this element can generally be found in particulate matter (PM), and in general in small concentrations. This work proposes the development of an analytical method for lead determination in inhaled PM based on ultrasound-assisted extraction with subsequent supramolecular solvent based dispersive liquid-liquid microextraction (SM-DLLME), using reverse micelles of dodecanoic acid as an extractor dispersed in a continuous phase of tetrahydrofuran (THF)/water. The rich phase was then analyzed by thermospray flame furnace atomic absorption spectrometry (TS-FF-AAS) coupled on-line to a flow injection analysis (FIA). An analytical curve in the range of 15.0-200.0 μg L<sup>-1</sup> (R<sup>2</sup> = 0.999), an enrichment factor of 18.1 times and the limits of detection (LOD) and quantification (LOQ) equal to 3.7 and 11.3 μg L<sup>-1</sup>, respectively, were obtained. The accuracy of the method was successfully attested by comparing with EDX analysis through the paired t-test at a confidence level of 95%. The amount of lead determined in the samples of PM collected in different environments varied from 19.3 to 94.8 ng m<sup>-3</sup>.</p>},
  author       = {Beal, Alexandra and Garcia De Almeida, Fernanda and Moreira, Camila A.B. and Santos, Isis M. and Curti, Suzana M.M. and Martins, Leila D. and Tarley, Cesar R.T.},
  issn         = {1759-9660},
  language     = {eng},
  month        = {08},
  number       = {30},
  pages        = {3745--3753},
  publisher    = {Royal Society of Chemistry},
  series       = {Analytical Methods},
  title        = {A new analytical method for lead determination in atmospheric particulate matter by a combination of ultrasound-assisted extraction and supramolecular solvent preconcentration},
  url          = {http://dx.doi.org/10.1039/c8ay01092g},
  volume       = {10},
  year         = {2018},
}