BACKGROUND Novel sink and U-trap designs have been developed to reduce contamination by users and diminish biofilm. Real-world experience with new sink designs and adjunctive measures such as ozone has been limited. AIMS To assess a new sink design for splashback and to evaluate the ozonated water feature for reduction of microbial bioburden. METHODS A portable sink unit was created that permitted the application of white absorbent paper to plexiglass shields beside and behind the sink. Participants, wearing painter coveralls and masks, spread 30 mL of tempera paint over their hands and washed for 20 s with neutral soap. Each participant repeated this five times sequentially, and cumulative results were recorded. Escherichia coli was exposed to ozonated water from the sink unit and to regular tap water and evaluated for microbial survival. FINDINGS Compared with a conventional sink, the SmartFLO3 sink had less environmental contamination within the sink, surrounding area and splashback on to the participant. Despite modifications to enhance ozone generation, readings of reactive oxygen species did not exceed 0.3 ppm, and no significant bactericidal effect was demonstrated. CONCLUSIONS The SmartFLO3 sink reduces splashback and has the potential to reduce pathogen transmission from sinks. At the low levels of ozone generated in this study, no clear bacterial killing effect was observed compared with tap water alone.

中文翻译：

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对包含臭氧水的新型水槽设计的评估。

背景技术已经开发出新颖的水槽和U形捕集器设计以减少使用者的污染并减少生物膜。使用新的水槽设计和辅助措施（例如臭氧）的实际经验是有限的。目的评估一种用于防溅的新型水槽设计，并评估臭氧水的功能，以减少微生物的负担。方法创建了一个便携式水槽单元，该单元允许在水槽旁边和后面的有机玻璃防护罩上使用白色吸收纸。参与者穿着画家的工作服和口罩，将30 mL的蛋彩画颜料涂在手上，并用中性肥皂清洗20 s。每个参与者依次重复此五次，并记录累积结果。将大肠杆菌暴露于水槽单元的臭氧水和常规自来水中，并评估其微生物存活率。调查结果与传统水槽相比，SmartFLO3水槽在水槽内，周围区域和回溅到参与者身上的环境污染更少。尽管进行了改进以增强臭氧的产生，但活性氧的读数未超过0.3 ppm，并且未显示出明显的杀菌作用。结论SmartFLO3水槽可减少飞溅，并具有减少水槽中病原体传播的潜力。在这项研究中产生的臭氧水平很低时，与单独的自来水相比，没有观察到明显的细菌杀灭作用。浓度为3 ppm，且未显示出明显的杀菌作用。结论SmartFLO3水槽可减少飞溅，并具有减少水槽中病原体传播的潜力。在这项研究中产生的臭氧水平很低时，与单独的自来水相比，没有观察到明显的细菌杀灭作用。浓度为3 ppm，且未显示出明显的杀菌作用。结论SmartFLO3水槽可减少飞溅，并具有减少水槽中病原体传播的潜力。在这项研究中产生的臭氧水平很低时，与单独的自来水相比，没有观察到明显的细菌杀灭作用。