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Deleterious properties retained by diesel fuel spilled in northern Canada in winter

机译:戴柴油燃料保留的有害物业在加拿大北部溢出冬季

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In March 1983, a fuel truck overturned at a bridge crossing the Cameron River, near Yellowknife, Northwest Territories, Canada, and spilled a quantity of diesel fuel. The spilled diesel fuel penetrated the snow cover, moved along the frozen surface of the ground and entered the ice-covered Cameron River. A sample of diesel fuel was recovered from beneath the river ice eight days after the initial spill. This sample from the river was compared with that from the original cargo in the truck in three quantitative and independent ways, namely gas chromatography with a comparison of the sample patterns by principal component analysis, acute toxicity to fish, and tendency to taint fish with an oily taste. The two samples were essentially the same in all respects, except for some subtle but consistent differences in the relative proportions of some individual hydrocarbons. The river samples were shown to contain slightly higher proportions of the C_8 to C_9 alkane components. Slightly lower proportions of alkanes eluted after C_(12), possibly as a result of losses due to sediment adsorption or fractionation under the ice. Evidently the low ambient temperatures and cover by ice and snow reduced greatly the 'weathering' phenomenon often described with spilled oils, and permitted the oil to retain its toxic and tainting properties.
机译:1983年3月,一辆燃料卡车推翻了一座穿越卡梅隆河的桥梁,靠近耶尔克韦,西北地区,加拿大,并洒了一定数量的柴油燃料。溢出的柴油燃料穿透雪盖,沿着地面的冰冻表面移动,进入了冰川覆盖的卡梅隆河。在初始泄漏后八天从河冰下回收柴油燃料样品。该河流的这种样品与三种定量和独立的方式从卡车中的原始货物进行比较,即气相色谱通过主要成分分析,对鱼类急性毒性的样品模式进行比较,以及污染的趋势油腻的味道。在所有方面,两个样品基本相同,除了一些单独烃的相对比例的一些微妙但一致的差异。显示河流样品含有略微较高的C_8至C_9烷烃组分的比例。在C_(12)之后略低较低的烷烃,可能是由于冰落下的沉积物吸附或分馏而导致的损耗。显然,通过冰雪的冰和雪覆盖的低环境温度和覆盖量大大降低了溢油的“风化”现象,并允许油保留其毒性和污点。

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