bhc

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。

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.

Benzene hexachloride is commonly called BHC.

六氯化苯通常称为BHC。

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。

〔 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。

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%。

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

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 ).

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

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.

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%.

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。

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

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。

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

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.

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。