ABSTRACT
In this
study, it is reported an analytical approach to recover
organochlorine pesticides from a clay soil. Soil was physical and chemically
characterized. Also pesticides
extraction was carried out using packed columns and various aqueous media (H2O-milliQ,
NaOH, HCl, SDS, Triton X-114, Humic acids and
Acetonitrile). The leachate samples were analyzed on an Agilent Technologies
6890N Gas Chromatograph with electron capture in a# AB002 Column 30.0 m × 250 μm × 0.25 μm calibrated, 25 psi pressure, flow
2.9 ml/min, temperature 25°C,
ultra-high purity Helium as the entrainment gas and an elution time of 50 min.
The results show that the highest extraction percentage of pollutants in the
soil washing was obtained with acetonitrile recovering: p, p’-DDT
(91.0%); p, p’-DDE (92.0%); p, p’-DDD (96.0%); aldrin
(98.6%); dieldrin (98.0%). With Triton X-114, the extractions recovery was: p, p’-DDT
(63.0%); p, p’-DDE (64.0%); p, p’-DDD
(65.0%); aldrin (67.0%); dieldrin
(72.0%). This study illustrates the potential Applicability of SPME for routine analysis of organochlorine
pesticides in soils.
Share and Cite:
Medina-Armenta, L. , Cruz-Jiménez, G. , Teutli-León, M. , de la Rosa, L. and Feria-Reyes, R. (2017) Pesticides Recovery and Detection from Agricultural Soil Leachates Using Gas Chromatography Masses with Electron Capture Detector.
American Journal of Analytical Chemistry,
8, 605-616. doi:
10.4236/ajac.2017.810043.