But the removal method study of BHC is comparatively scarce.

但对BHC在 环境中去除方法的研究却较少,而且主要集中在生物降解的研究上.

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The average of BHC in the surface sediment was 11.15×10 - 9 ( dry ), DDT 33.46×10 - 9 ( dry ).

沉积物BHC为 11?15×10 - 9 ( 干 ), DDT为33?46×10 - 9 ( 干 ).

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The isomerization products of ? ? - BHC are α - BHC and δ - BHC , The isomerization ratio is between 0.04 % - 0.17 %.

异构化的主要产物为α、δ -BHC, 它们的异构化率在0.04%～0.17%之间.

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Among BHC , the ratios for α - BHC , ? ? - BHC and ? ? - BHC were 19.4％ , 72.8％ and 7.1％, respectively.

α — BHC 和β — BHC分别占BHC的 19.3%和72.8%,而γ—BHC仅占7.1%.

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Distribution of BHC isomers is α & gt; ? ? & gt; ? ? & gt; δ.

六六六异构体的分布为α & gt; β & gt; γ & gt; δ.

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