Evaluation of Sampling Strategies for Pesticides in a Macroporous Sandy Loam Soil
| Autor: | M. Styczen, Christian Koch, Søren Hansen, Birgitte Gjettermann, Carsten T. Petersen |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Dye tracing
Health Toxicology and Mutagenesis Sample (material) Soil Science Sampling (statistics) Soil science Pesticide complex mixtures Pollution Pendimethalin chemistry.chemical_compound chemistry Loam Environmental chemistry Glyphosate Environmental Chemistry Environmental science Leaching (agriculture) |
| Zdroj: | Soil and Sediment Contamination: An International Journal. 20:986-994 |
| ISSN: | 1549-7887 1532-0383 |
| DOI: | 10.1080/15320383.2011.620049 |
| Popis: | It is not straightforward to sample and demonstrate the presence and transport of pesticides in heterogeneous soil. Following leaching experiments with four differently structured 50-cm-long soil columns (tilled and untilled soil), the objective of this study was to investigate the extent that visual tracing of the dye Brilliant Blue could support in soil sampling for two strongly sorbing pesticides (14C-labeled glyphosate and pendimethalin). About 830 samples were collected. No pesticide was found below 10– 25 cm depth by random sampling, even though 0.21–0.31% of the applied amounts were leached, and 0.18% of the soil volume was sampled. With similar sampling efforts, the pesticides could generally be traced throughout the columns by sampling from stained soil volumes, only. None of the two particular sampling strategies for pesticides produced accurate mass balances or balances that were obviously better than the other. No pesticide was detected outside stained soil volumes, except for glyphosate in on... |
| Databáze: | OpenAIRE |
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