Service-learning (SL) is an active learning approach that connects the knowledge a student acquires in the classroom to an application that benefits the community. Increasingly popular in the chemistry curriculum, service-learning is reported to provide student benefits including improved cognitive goals; increased academic, interpersonal, and leadership skills; increased ability to apply course concepts to real-world situations; and increased community engagement. For the work reported here, an analytical chemistry laboratory was modified to include a service-learning component with the goal of allowing students to apply their newly acquired analytical skills to relevant, real-world samples; to learn new analytical techniques; and to develop professional communication skills. Students implemented a study of the wastewater effluent at the Orlando Easterly Wetlands, an engineered water polishing facility that removes nutrients from treated wastewater. Students designed a sampling strategy, collected samples in the field, and performed standard analysis on the water, including pH, chloride, total dissolved solids, and phosphorus. Students also tested the water for the artificial sweetener, sucralose, and characterized the concentration throughout the flow path of the wetlands. Sucralose has been proposed as an indicator of contamination of natural waters by anthropogenic waste. This type of analysis has not been performed for this public utility until now, and the students shared the results in a public seminar. Student learning outcomes were compared to those in a conventional section, with SL students showing comparable subject mastery and improved self-efficacy.

中文翻译：

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量化水处理湿地中的三氯蔗糖：在分析化学实验室中的服务学习

服务学习（SL）是一种主动的学习方法，它将学生在课堂上获得的知识与有益于社区的应用程序联系起来。据报道，在化学课程中，服务学习越来越受欢迎，它可以为学生带来好处，包括改善认知目标。提高学术，人际交往和领导能力；提高将课程概念应用于现实世界的能力；并增加了社区参与度。对于此处报告的工作，分析化学实验室进行了修改，以包括一个服务学习组件，其目的是让学生将他们新获得的分析技能应用到相关的现实世界样本中；学习新的分析技术；并发展专业的沟通技巧。学生们对奥兰多复活湿地的废水进行了研究，这是一个工程化的水抛光设备，用于去除处理过的废水中的养分。学生设计了采样策略，在野外采集了样品，并对水进行了标准分析，包括pH值，氯化物，总溶解固体和磷。学生还测试了水中的人造甜味剂三氯蔗糖，并确定了整个湿地流动路径中的浓度。已提出三氯蔗糖作为人为废物污染天然水的指标。到目前为止，尚未对此公用事业进行此类分析，并且学生在公开研讨会上共享了结果。将学生的学习成果与常规部分的学习成果进行了比较，