Scientific publications
2016Journal articleEnglish
Characterization of Carbamate Pesticides in Natural Water from Cameroon (opens in a new tab)
Authors
University of Yaoundé I
University of Bamenda
Edouard Akono Nantia
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Scientific publications
Edouard Akono Nantia
Sonchieu Jean
David Moreno‐González* (Corresponding author)
Ana M. Garcı́a-Campaña
Laura Gámiz‐Gracia
Faustin Pascal Tsagué Manfo
Analytical Letters
With the increased use of chemicals in agriculture for crop protection and improvement of yield, the contamination of water is currently a serious health concern. This study used solid-phase extraction with ultra-high-performance liquid chromatography–tandem mass spectrometry to evaluate the presence of 23 carbamate pesticides in waters from Cameroon. The separation was achieved in 5.5 min using a C18 column (50 × 2.1 mm, 1.8 µm) with a mobile phase composed of water and methanol each containing 0.01% formic acid. The analytes were determined in positive multiple reaction monitoring mode. The recoveries for fortified water were from 75 to 99%, with relative standard deviations below 13%. The limits of detection ranged from 0.003 to 0.397 µg L−1. The reported method is simple, sensitive, and accurate, and is a suitable alternative for routine monitoring of pesticide residues at ultra-trace levels. The analysis revealed the presence of propoxur at a concentration of 0.072 µg L−1 in stream water.