Migration and Accumulation of Octachlorodipropyl Ether in Soil-Tea Systems in Young and Old Tea Gardens.
Int J Environ Res Public Health
; 14(9)2017 09 08.
Article
en En
| MEDLINE
| ID: mdl-28885583
ABSTRACT
The migration and accumulation of octachlorodipropyl ether (OCDPE) in soil-tea systems were investigated using a gas chromatography-electron capture detector (GC-ECD) method in young and old tea gardens. When the residual concentration of OCDPE was 100 g a.i. hm-2 in soils, the peak concentrations of OCDPE in fresh leaves of young and old tea plants were 0.365 mg/kg and 0.144 mg/kg, taking 45 days and 55 days, respectively. Equations for the accumulation curves of OCDPE in fresh leaves of young and old tea plants were Ct = 0.0227e0.0566t (R² = 0.9154) and Ct = 0.0298e-0.0306t (R² = 0.7156), and were Ct = 3.8435e0.055t (R² = 0.9698) and Ct = 1.5627e-0.048t (R² = 0.9634) for dissipation curves, with a half-life of 14.4 days and 12.6 days, respectively. These results have practical guiding significance for controlling tea food safety.
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Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Sinergistas de Plaguicidas
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Contaminantes del Suelo
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Hojas de la Planta
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Camellia sinensis
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Éteres
Idioma:
En
Revista:
Int J Environ Res Public Health
Año:
2017
Tipo del documento:
Article
País de afiliación:
China