Venturi-scrubber pre-concentration technique for electrochemical detection of airborne lead traces

Inessa Belostotsky, Vladimir V. Gridin, Israel Schechter*, Chaim N. Yarnitzky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A method for ambient tracing of airborne lead-containing pollutants is reported. It is based on coupling a Venturi-scrubber aerosol sampling with square-wave anodic stripping voltammetry. The method was tested by a series of pilot experiments. These were performed using contamination-controlled air intakes. A linear concentration process was achieved by the Venturi-scrubber. These data were cross-referenced by means of standard analysis of the lead-containing aerosols entrapped on filter sampler. Successful modeling of experimental results was achieved. Several aspects, relevant to on-line monitoring of such lead-contaminated aerosols, have been addressed. The sampling efficiency increases with the average aerosol size and is reduced by persisting non-soluble airborne particulates. The reported pre-concentration processes are consistent with a well-known inertial impact mechanism. In regards of capturing liquid aerosols, this approach appears to be more effective than that with filters.

Original languageEnglish
Pages (from-to)215-226
Number of pages12
JournalAnalytica Chimica Acta
Volume429
Issue number2
DOIs
StatePublished - 23 Feb 2001
Externally publishedYes

Keywords

  • Air analysis
  • Electrochemical detection
  • Lead-containing aerosols
  • Venturi-scrubber

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