氯丹

Enterobacter sp.LY402, which had been isolated and proved to be able to degrade PCBs, was researched to biodegrade chloradane under aerobic conditions.

本论文以氯丹为研究对象，利用实验室前期筛选得到的一株能好氧降解多氯联苯的菌株——Enterobacter sp。

The special high levels of chlordane in soils might be attributed to the use of the substance in the vicinity.

通过化合物浓度与其对映体比值的对比，认为个别高值点主要受氯丹使用的影响，其手性化合物对映体比值接近原始值(0.5)。

Besides, we got new strains from environment, which might be advantage to study the synergies of different strains to increase the viability and the degradation rate of chlordane in high concentration.

同时，从环境中得到了更多的高效降解菌，为今后研究多种降解菌之间的协同作用，从而提高降解菌在实际环境体系中的生存能力以及对高浓度氯丹的降解能力打下良好基础。

Furthermore, we also isolated some new bacterium from the samples of pollution point to remove chlordane.

同时从实际污染点样品中筛选出四种有效的降解菌(M-15、M-16、S-2、S-6)，研究它们对氯丹的降解能力。

The kinetics of chlordane degradation was evaluated well by pseudo one-order model.

动力学模拟结果表明，LY402好氧降解氯丹的过程符合pseudo一阶动力学模型。

On the other hand, replacing chlordane and mirex by insect growth regulator can eliminate the occupational and social exposure of chlordane and mirex and avoid the potential threaten to human growth.

另一方面，用昆虫生长调节剂取代氯丹和灭蚁灵，可以消除氯丹和灭蚁灵的职业暴露与社会性暴露，同时消除对人体健康产生的潜在威胁。

The experimental results were followed:(1) LY402 could degrade chlordane in an aerobic environment. The percent of chlordane degradation at 1.0 mg /L was more than 94% after 4 days at 30℃. When exposed to a concentration as high as 10.0 mg/L, LY402 could still degrade 61% of chlordane. There was no obvious difference between cis-chlordane and trans-chlordane in the mixture on biotransformation rate.

实验结果表明：(1)在好氧条件下，LY402能够有效降解氯丹，对于1mg/L的顺式氯丹和反式氯丹混合物，在30℃下，经过4天的好氧降解，其总降解率接近95%，进一步将氯丹混合物的总量增加到10.0mg/L，其4天的总生物降解速率仍然能够达到64%，其中，顺式氯丹和反式氯丹的生物降解速率没有明显区别。

The higher the chlordane initial concentration showed the lower the degradation rate, which indicated that chlordane or intermediate metabolites might be harmful to the micro-organisms.

随着氯丹浓度的增高，降解率呈明显下降趋势，说明氯丹对降解菌可能具有一定生物毒性。

Chlordane is one of the persistent organic pollutants which were decided to be controlled globally first by the UNEP due to its physical and chemical stability, recalcitrant degradation under natural conditions and tending to accumulate in organisms. It had been proved that Chlordane may cause cancer, malformation and mutation, so research of elimination of Chlordane in the environments is of great significance to the health and sustainable development of humankind. Chlordane was the research object in this paper.

氯丹是联合国环境规划署发布的全球首批优先治理的持久性有机污染物之一，氯丹物理化学性质稳定，难于自然降解，易于在生物体内富集并对生物体具有致癌、致畸、致突变等作用，氯丹环境清除技术的研究对保证人类健康和社会可持续发展具有重要意义。

Recovery studies were performed at 0.05, 0.1, and 0.5 mg/L spiked levels of each POPs, and the recoveries obtained ranged from 81.99% to 100.60% with relative standard deviations between 2.37% and 18.48%. The detection limits of the method ranged from 0.1 to 5 ng/g for the different POPs except endrin, trans-chlordane and cis-chlordane.

不同浓度水平的添加回收率试验表明，25种持久性有机污染物的添加回收率为81.99%～100.60%，相对标准偏差为2.37%～18.48%，除异狄氏剂、反式氯丹和顺式氯丹的检测限分别为20，30和20 ng/g外，其他有机污染物的检测限为0.1～5 ng/g。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了