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Int. J. Environ. Res. Public Health 2017, 14(9), 1033; doi:10.3390/ijerph14091033

Migration and Accumulation of Octachlorodipropyl Ether in Soil-Tea Systems in Young and Old Tea Gardens

1
School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
2
Provincial Key Laboratory for Agri-Food Safety, Anhui Agricultural University, Hefei 230036, China
3
School of Resource & Environment, Anhui Agricultural University, Hefei 230036, China
*
Author to whom correspondence should be addressed.
Received: 13 August 2017 / Revised: 4 September 2017 / Accepted: 4 September 2017 / Published: 8 September 2017
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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. View Full-Text
Keywords: octachlorodipropyl ether; soil-tea system; fresh tea leaf; migration; accumulation octachlorodipropyl ether; soil-tea system; fresh tea leaf; migration; accumulation
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Liao, M.; Shi, Y.-H.; Cao, H.-Q.; Fang, Q.-K.; Xiao, J.-J.; Hua, R.-M. Migration and Accumulation of Octachlorodipropyl Ether in Soil-Tea Systems in Young and Old Tea Gardens. Int. J. Environ. Res. Public Health 2017, 14, 1033.

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