Batch solar disinfection (SODIS) inactivation kinetics are reported for suspensions in water of Campylobacter jejuni, Yersinia enterocolitica, enteropathogenic Escherichia coli, Staphylococcus epidermidis, and endospores of Bacillus subtilis, exposed to strong natural sunlight in Spain and Bolivia. The exposure time required for complete inactivation (at least 4-log-unit reduction and below the limit of detection, 17 CFU/ml) under conditions of strong natural sunlight (maximum global irradiance, ～1,050 W m?2 ± 10 W m?2) was as follows: C. jejuni, 20 min; S. epidermidis, 45 min; enteropathogenic E. coli, 90 min; Y. enterocolitica, 150 min. Following incomplete inactivation of B. subtilis endospores after the first day, reexposure of these samples on the following day found that 4% (standard error, 3%) of the endospores remained viable after a cumulative exposure time of 16 h of strong natural sunlight. SODIS is shown to be effective against the vegetative cells of a number of emerging waterborne pathogens; however, bacterial species which are spore forming may survive this intervention process.
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机译：在西班牙和玻利维亚，暴露于强烈阳光下的空肠弯曲菌，肠炎耶尔森菌，肠致病性大肠杆菌，表皮葡萄球菌和枯草芽孢杆菌的内生孢子在水中的悬浮液，据报道采用分批太阳能消毒（SODIS）灭活动力学。在强烈的自然阳光（最大总辐照度，〜1,050 W m？2±10 W m？）下完全灭活（至少减少4个对数单位且低于检测极限，17 CFU / ml）所需的暴露时间。 2）如下：空肠弯曲杆菌，20分钟;表皮葡萄球菌45分钟;肠致病性大肠杆菌，90分钟;小肠结肠炎耶尔森氏菌，150分钟在第一天后枯草芽孢杆菌内孢子未完全灭活后，第二天再次暴露于这些样品中，发现经过16小时强自然暴露后，仍有4％（标准误，3％）的内生孢子仍然存活。阳光。 SODIS被证明对许多新兴的水生病原体的营养细胞有效。但是，孢子形成的细菌可能会在此干预过程中幸免。
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