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首页> 外文期刊>Cogent Environmental Science >Wastewater from Mexico City contains organotin compounds and organotin-resistant bacteria
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Wastewater from Mexico City contains organotin compounds and organotin-resistant bacteria

机译：墨西哥城的废水中含有有机锡化合物和抗有机锡细菌

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摘要

Organotin compounds are man-made chemicals used worldwide for diverse applications. These organometallic compounds may be released from antifouling paints, polyvinyl chloride and other materials into terrestrial and aquatic environments. Mexico City is a highly populated and industrialized city with many potential sources of environmental pollution. We evaluated the content of butyltins, triphenyltin and bacteria in water from various sites with different water quality in Mexico City, Pachuca City and two towns located between these two cities. Butyltins and/or triphenyltin were detected by gas chromatography and mass spectrometry analysis in samples from 4/4 sites containing wastewater, 1/2 sites containing reclaimed water and 2/5 sites holding accumulated water in open-air deposits. Neither organotin compounds nor bacteria were found in household water samples. However, 80 bacterial strains were isolated from partially treated or untreated wastewater and 72 of them were identified at the genus and species levels by the automated Mass Spectrometry Identification System VITEK MS. In vitro growth of 16 of 28 tested strains was not inhibited by 1?mM tributyltin or triphenyltin, indicating that many environmental bacteria are highly tolerant to organotin compounds.
机译：有机锡化合物是世界范围内用于各种应用的人造化学物质。这些有机金属化合物可能会从防污涂料，聚氯乙烯和其他材料释放到陆地和水生环境中。墨西哥城是一个人口稠密且工业化的城市，具有许多潜在的环境污染源。我们评估了墨西哥城，帕丘卡城和位于这两个城市之间的两个城镇中水质不同的不同地点的水中丁基锡，三苯锡和细菌的含量。通过气相色谱法和质谱分析法从4/4个含有废水的站点，1/2个含有再生水的站点和2/5个在露天沉积物中保持积水的站点的样品中检测了丁基锡和/或三苯基锡。在家庭用水样品中均未发现有机锡化合物或细菌。但是，从部分处理或未处理的废水中分离出80个细菌菌株，并通过自动质谱鉴定系统VITEK MS在属和种水平上鉴定了其中的72个。 1μmM三丁基锡或三苯基锡没有抑制体外培养的28个菌株中的16个，表明许多环境细菌对有机锡化合物具有高度的耐受性。

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