Sorption and mobility of thiabendazole in a Brazilian Oxisol

Autor:	Bianca Veloso Goulart, Ana Carolina Pinto, Wallace Nikolas dos Santos Nascimento, Maria Inês Nogueira Alvarenga, Larissa Silva Maciel, Patrícia Maralyne Lopes Lisboa Fagundes, Márcia Matiko Kondo
Rok vydání:	2020
Předmět:	Oxisol Chemistry Environmental chemistry Soil organic matter Desorption General Earth and Planetary Sciences Soil horizon Sorption Freundlich equation Leaching (agriculture) Latosol General Environmental Science
Zdroj:	Ciência e Natura. 42:e44
ISSN:	2179-460X 0100-8307
DOI:	10.5902/2179460x42330
Popis:	Thiabendazole is a benzimidazole class drug that is widely used due to its vermifugal and fungicidal properties. The present study investigates the behaviour of TBZ in the A and B horizons of a Red-Yellow Latosol typical of southern Minas Gerais State, Brazil. Adsorption and desorption assays were performed under different pH conditions (3.0, 4.2-5.1, and 8.5) and a leaching study was conducted using soil columns. The results demonstrated that the behaviour of TBZ in the soil was influenced by the pH, soil organic matter and clay content. The Freundlich constants indicated that the adsorption capacities for horizons A and B were high (50-149 mg1-1/n.L1/n.kg-1) and low (0-24 mg1-1/n.L1/n.kg-1), respectively. The leaching study results indicated that for both horizons, TBZ presented higher sorption in the initial fractions of the column (0-2 cm), and that the B horizon had a lower adsorption capacity, compared to the A horizon.
Databáze:	OpenAIRE
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