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首页> 外文期刊>Mutation Research, C. Mutation Research Letters >MUTAGENICITY OF PARTICULATES FROM THE LABORATORY COMBUSTION OF PLASTICS
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MUTAGENICITY OF PARTICULATES FROM THE LABORATORY COMBUSTION OF PLASTICS

机译：塑料实验室燃烧中颗粒的致突变性

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摘要

Carcinogenic polycyclic aromatic hydrocarbons (PAHs) and nitropolycyclic, aromatic hydrocarbons (nitro-PAHs) have been identified in airborne particulate organic matter extracts. The pollutant sources were generally contributed by motor vehicles and industrial activity. Massive quantities of urban solid wastes, containing plastic materials such as PVC, PET, PS, and PE, burnt in the open air in local garbage dumps are frequently found in developing countries. In this study, the smog particulates from the combustion of these synthetic polymers were produced in a laboratory combustion chamber. The mutagenicity of acetone extracts from the smog particulates was evaluated with Salmonella typhimurium TA98 and TA100 in the presence and absence of S9 mix. Four samples in TA98 exhibited higher mutagenicity than those in TA100. The greatest mutagenicity was observed from the extracts of particulates from combustion of PVC followed by that of PS, PET, and PE. To determine the major mutagenic compounds in these samples, mutagens were partially purified through TLC and their mutagenicity was monitored with TA98. 1-NP and DNPs in the above samples were also determined by HPLC. The amounts of 1-NP and DNPs generally corresponded with their mutagenicity. Higher levels of 1-NP and DNPs were generated from the combustion of PVC, PET, and PS. The combustion of synthetic polymer wastes might be responsible for the presence of high levels of 1-NP and DNPs in Taiwan urban air.
机译：空气中的颗粒状有机物提取物中已鉴定出致癌的多环芳烃（PAH）和硝基多环芳烃（硝基-PAH）。污染物的来源通常是机动车和工业活动造成的。在发展中国家，经常发现大量城市固体废物，其中包含在当地垃圾场的露天燃烧的塑料，例如PVC，PET，PS和PE。在这项研究中，这些合成聚合物燃烧产生的烟雾颗粒是在实验室燃烧室内产生的。在有和没有S9混合物的情况下，用鼠伤寒沙门氏菌TA98和TA100评估了烟雾颗粒中丙酮提取物的致突变性。 TA98中的四个样品显示出比TA100中更高的致突变性。从PVC燃烧之后的颗粒提取物中观察到最大的致突变性，其次是PS，PET和PE。为了确定这些样品中的主要诱变化合物，诱变剂通过TLC部分纯化，并用TA98监测其诱变性。上述样品中的1-NP和DNP也通过HPLC测定。 1-NP和DNP的数量通常与其诱变性相对应。 PVC，PET和PS的燃烧产生更高水平的1-NP和DNP。台湾城市空气中合成聚合物废物的燃烧可能是导致1-NP和DNP含量高的原因。

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