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http://hdl.handle.net/1843/48781| Type: | Artigo de Periódico |
| Title: | Fast extraction of polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran in sewage sludge and soil samples |
| Authors: | Valeria Faria Andrade Alisson Farley Soares Durães Douglas Lopes Cassimiro Gevany Paulino de Pinho Flaviano Oliveira Silvério |
| Abstract: | The current environmental legislations recommend monitoring chemical contaminants such as polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans before the use of sewage sludge on the agricultural land. In this study, a solid–liquid extraction with low-temperature purification (SLE-LTP) was optimized and validated to determine 2,3,7,8-tetrachlorodibenzo-p-dioxin and 2,3,7,8-tetrachlorodibenzofuran in sewage sludge and soil samples. The analyses were performed by gas chromatography-mass spectrometry operating in the selective ion mode (GC-MS-SIM). Acetonitrile:ethyl acetate 6.5:1.5 (v/v) was the best extraction phase, and the recoveries percentages were close to 100%. The linearity was demonstrated in the range of 1.25–25 µg L−1 of 1.25–20 µg L−1 for sewage sludge and soil, respectively. Matrix effect was proved for the two compounds and in the two matrices studied. Extraction percentages were between 78 and 109% and relative standard deviations ≤ 19%. The proposed method is faster than methods described in the literature because showed a few steps. The quantification limits (LOQ) in sewage sludge were 6.4 and 32 ng TEQ kg−1 for 2,3,7,8-TCDF and 2,3,7,8-TCDD, respectively. In soil, LOQs were 0.8 and 8.0 ng TEQ kg−1 for 2,3,7,8-TCDF and 2,3,7,8-TCDD, respectively. These values are lower than the maximum residue limits established by European Legislation. The method was applied to 22 agricultural soil samples from different Brazilian cities and 2,3,7,8-TCDF was detected in one of these samples. |
| Subject: | Dioxinas Furanos Lodo de esgoto Águas residuais - Purificação |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1080/03601234.2016.1273003 |
| URI: | http://hdl.handle.net/1843/48781 |
| Issue Date: | 17-Jan-2017 |
| metadata.dc.url.externa: | https://www.tandfonline.com/doi/full/10.1080/03601234.2016.1273003 |
| metadata.dc.relation.ispartof: | Journal of Environmental Science and Health, Part B |
| Appears in Collections: | Artigo de Periódico |
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