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

Author

Listed:
  • Min Liao

    (School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
    Provincial Key Laboratory for Agri-Food Safety, Anhui Agricultural University, Hefei 230036, China)

  • Yan-Hong Shi

    (Provincial Key Laboratory for Agri-Food Safety, Anhui Agricultural University, Hefei 230036, China
    School of Resource & Environment, Anhui Agricultural University, Hefei 230036, China)

  • Hai-Qun Cao

    (School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
    Provincial Key Laboratory for Agri-Food Safety, Anhui Agricultural University, Hefei 230036, China)

  • Qing-Kui Fang

    (School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
    Provincial Key Laboratory for Agri-Food Safety, Anhui Agricultural University, Hefei 230036, China)

  • Jin-Jing Xiao

    (School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
    Provincial Key Laboratory for Agri-Food Safety, Anhui Agricultural University, Hefei 230036, China)

  • Ri-Mao Hua

    (Provincial Key Laboratory for Agri-Food Safety, Anhui Agricultural University, Hefei 230036, China
    School of Resource & Environment, Anhui Agricultural University, Hefei 230036, China)

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 C t = 0.0227e 0.0566t (R 2 = 0.9154) and C t = 0.0298e −0.0306t (R 2 = 0.7156), and were C t = 3.8435e 0.055t (R 2 = 0.9698) and C t = 1.5627e −0.048t (R 2 = 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.

Suggested Citation

  • Min Liao & Yan-Hong Shi & Hai-Qun Cao & Qing-Kui Fang & Jin-Jing Xiao & Ri-Mao Hua, 2017. "Migration and Accumulation of Octachlorodipropyl Ether in Soil-Tea Systems in Young and Old Tea Gardens," IJERPH, MDPI, vol. 14(9), pages 1-7, September.
    • Handle: RePEc:gam:jijerp:v:14:y:2017:i:9:p:1033-:d:111350
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