期刊名称：Revista Internacional de Contaminación Ambiental
印刷版ISSN：0188-4999
出版年度：2004
卷号：20
期号：4
页码：185-192
语种：Spanish
出版社：Centro de Ciencias de la Atmósfera
摘要：Many papers describe the analytical methods for organochlorine pesticide residue determination in environmental samples. Gas chromatography with electron capture detection requires an efficient clean-up step of extracts. To reach this purpose, the adsorbents such as florisil, aluminium oxide and silica gel are employed. Most of organochlorine pesticides are resistant to sulfuric acid, characteristic that was used in the destruction of organic compounds of sample origin. The analytical methods that use sulfuric acid as a clean-up medium during the determination of organochlorine pesticide residues in the following samples are described: soil and sediments, vegetables and tubercles, grains, straw, tobacco, fatty samples of animal origin such as adipose tissue and milk fat, blood serum and semen. The analytical quality study done for each sample type, expressed as mean with standard deviation and percent of variation, gave values higher than 90 % of recovery and a variation smaller than 10 %. According to the criteria of the Association of Official Analytical Chemists of USA, the obtained values considered the described methods as excellent in recovery and with acceptable variability. Moreover, the use of sulfuric acid makes the method cheap, eliminating the adsorbents and diminishing the volume of solvents.
其他摘要：Many papers describe the analytical methods for organochlorine pesticide residue determination in environmental samples. Gas chromatography with electron capture detection requires an efficient clean-up step of extracts. To reach this purpose, the adsorbents such as florisil, aluminium oxide and silica gel are employed. Most of organochlorine pesticides are resistant to sulfuric acid, characteristic that was used in the destruction of organic compounds of sample origin. The analytical methods that use sulfuric acid as a clean-up medium during the determination of organochlorine pesticide residues in the following samples are described: soil and sediments, vegetables and tubercles, grains, straw, tobacco, fatty samples of animal origin such as adipose tissue and milk fat, blood serum and semen. The analytical quality study done for each sample type, expressed as mean with standard deviation and percent of variation, gave values higher than 90 % of recovery and a variation smaller than 10 %. According to the criteria of the Association of Official Analytical Chemists of USA, the obtained values considered the described methods as excellent in recovery and with acceptable variability. Moreover, the use of sulfuric acid makes the method cheap, eliminating the adsorbents and diminishing the volume of solvents.
