Jump to main content
Jump to site search

Issue 17, 2014
Previous Article Next Article

Trace analysis of pesticides and an assessment of their occurrence in surface and drinking waters from the State of São Paulo (Brazil)

Author affiliations

Abstract

An efficient method based on solid phase extraction (SPE) and determination by liquid chromatography-tandem mass spectrometry (LC-MS/MS) has been developed for simultaneous determination of 12 pesticides at trace levels in surface and drinking waters from the State of São Paulo (Brazil), which are likely to be contaminated due to the widespread use of these products. Several parameters that affect SPE and the analysis were studied, such as conditioning and elution solvents, sample pH, breakthrough volume and matrix effects. Method development was validated by several figures of merit. Recoveries from synthetic samples spiked at 150 ng L−1 and 1000 ng L−1 levels with difenoconazole, epoxiconazole, tebuconazole, atrazine, azoxystrobin, pyraclostrobin, picoxystrobin, trifloxystrobin, profenofos and fipronil varied from 73 to 99%, with intraday precision in the 5–24% range. A lower fortification level (10 ng L−1), close to detection limits, led to recoveries from 86–155%, which was considered acceptable for the purpose of trace analysis of environmental samples. Low detections limits (1–50 ng L−1) and quantification limits (2–180 ng L−1) were obtained. The method was applied for the determination of pesticide residues at the nanogram per liter level in samples of drinking water from 9 cities and in surface waters from 13 rivers of the State of São Paulo, Brazil. The results showed that the investigated waters are highly impacted with carbendazim and atrazine, which were the most frequently determined compounds.

Graphical abstract: Trace analysis of pesticides and an assessment of their occurrence in surface and drinking waters from the State of São Paulo (Brazil)

Back to tab navigation

Supplementary files

Publication details

The article was received on 30 Mar 2014, accepted on 30 Jun 2014 and first published on 30 Jun 2014


Article type: Paper
DOI: 10.1039/C4AY00782D
Author version
available:
Download author version (PDF)
Citation: Anal. Methods, 2014,6, 6668-6677
  •   Request permissions

    Trace analysis of pesticides and an assessment of their occurrence in surface and drinking waters from the State of São Paulo (Brazil)

    C. C. Montagner, C. Vidal, R. D. Acayaba, W. F. Jardim, I. C. S. F. Jardim and G. A. Umbuzeiro, Anal. Methods, 2014, 6, 6668
    DOI: 10.1039/C4AY00782D

Search articles by author

Spotlight

Advertisements