bhc

Study on the effect of BHC on the mice spermatozoon

工业品六六六对小鼠精子影响的研究

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METHODS The residues of 4 isomers of benzene hexachloride ( BHC), 4 isomers of dichloro-diphenyl trichloroethane ( DDT) and pentachloro nitrobenzene ( PCNB) were determined by gas chromatography.

方法采用气相色谱法对六六六（BHC）4种异构体、滴滴涕（DDT）4种异构体和五氯硝基苯（PCNB）进行测定。

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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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〔 Method 〕 He pure salad oil was spiked with standard solution containing BHC and DDT, to observe the uniformity and stability of the sample was the next step.

〔方法〕向纯净的色拉油中添加六六六、滴滴涕标准溶液，观察样品的均匀性和稳定性。

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Benzene hexachloride is commonly called BHC.

六氯化苯通常称为BHC。

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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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BHC and DDT in the squids in continental shelf of northern South China Sea

南海北部陆架海域枪乌贼中的六六六和DDT

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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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Studies on safety standard of bhc/ ddt dust for using on wheat against the Chinese armyworm

粘虫散在小麦上安全使用标准的研究

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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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The main pollutants in water are total coliform bacteria and Cu, and the main pollutants in fishery sediment are Cr, BHC and DDT.

水主要污染物为总大肠菌群和Cu，底泥主要污染物为Cr、六六六和滴滴涕。

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Mercury, DDT and BHC accumulate strongly in aquatic organisms and bear a direct ratio to the trophic level and mercury is more than the other two.

在蓟运河河口生态系统中，水生生物对汞、DDT、六六六均有很强的积累能力，体内积累量大体上有沿生物营养等级而增高的趋势，尤以汞最为明显。

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The distribution characteristics in sea water and the accumulation in benthic organism of 666 ( bhc) in the nearshore of East Guangdong Province

粤东海区水体中六六六的分布特征及其在底栖生物体内的蓄积

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Using concentration of benzene hexachloride ( BHC) and dichlorvos ( DDVP) by 3 ∶ 1, the control effect can reach 98.6%.

采用六六六加敌敌畏按3∶1混合剂进行化学防治，防治效果达98.6%。

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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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There is long superintend on the distribution and concentration of BHC.

长期以来，对BHC的分布及浓度监测一直没有间断。

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The results show that benzo ( a) pyrene is of the highest total score in several kinds of persistent toxic substances, followed by chromium ( VI), cadmium, lead and benzene hexachloride ( BHC, a kind of organo-chlorine pesticides).

结果表明，在几类典型的持久性毒害污染物中，苯并（a）芘的总分值最高，其次为重金属类的铬（六价）、镉、铅及有机氯农药类的六六六。

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