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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Differential retention of PCB congeners in cockroaches Blattella germanica
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Differential retention of PCB congeners in cockroaches Blattella germanica

机译：蟑螂德国小att中PCB同源物的差异保留

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摘要

Organisms differ widely in their ability to metabolize and eliminate polychlorinated biphenyls (PCBs). We evaluated the retention of PCB congeners, reference standard mixture, experimentally injected into cockroach Blattella germanica, in relation to sex and time, and its elimination through the feces, exuviae and oothecae. The nymphs that died prematurely had a higher average PCB retention than those with a longer lifetime, 88% of the injected dose for those that died within 1 to 10 days, and 76% for those within 11-20 days. Diverse PCB congeners showed differential retention, and particularly the more volatile, low weight congeners were recovered in lower concentrations, the medium-weight ones were intermediate, while the high-weight congeners attained the highest concentration. PCBs were also detected in the excrements and in exuviae, which may therefore act as detoxification paths, and in the oothecae, thus showing that PCBs can be transferred from mother to progeny.
机译：生物在代谢和消除多氯联苯（PCB）的能力方面差异很大。我们评估了实验性地注射到德国小Bl中的多氯联苯同源物，参考标准混合物的保留时间，性别和时间，以及其通过粪便，表皮虫和卵鞘的清除。与寿命较长的若虫相比，过早死亡的若虫具有更高的平均PCB保留率，在1至10天内死亡的若虫的注射剂量为88％，在11-20天内死亡的若虫的注射剂量为76％。多氯联苯同类物表现出不同的保留率，尤其是挥发性较低的低重量同类物在较低浓度下被回收，中等重量的同类物处于中间，而高重量的同类物达到最高浓度。在粪便和粪尿中也检测到了多氯联苯，因此它们可能是排毒途径，在卵囊中也发现了多氯联苯，因此表明多氯联苯可以从母体转移到子代。

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