Expanding Evaporation Rate Model Determination of Hand-Rub Sanitizers to the General Freshman and Engineering Chemistry Undergraduate Laboratory: Inquiry-Based Formulations, Viscosity Measurements, and Qualitative Biological Evaluations
Expanding Evaporation Rate Model Determination of Hand-Rub Sanitizers to the General Freshman and Engineering Chemistry Undergraduate Laboratory: Inquiry-Based Formulations, Viscosity Measurements, and Qualitative Biological Evaluations
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将洗手液的蒸发率模型测定扩展到普通新生和工程化学本科实验室：基于查询的配方、粘度测量和定性生物学评估
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
K. Waynant
中科院分区：
文献类型：
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作者：
Daniel Felton;J. Moberly;M. Ederer;P. Hartzell;K. Waynant
添加到流行的蒸发率测定实验室的酒精为基础的手擦消毒剂在这里描述。值得注意的是，调查驱动的协议，制定手擦消毒剂，落球粘度计，消毒剂的功效。熟悉的物质（“分子相关性”）的结合使学生能够吸收知识，并连接到和认识相互关联的学科。为了激发参与度和项目所有权，学生们有机会通过改变胶凝剂的量和分子量来改变消毒剂配方。使用落球粘度计测定粘度，以将物理学和流体动力学概念整合到这些实验中。最后，为了强调微生物应用并确定洗手液的功效，学生们使用皮肤分泌物的琼脂平板并比较消毒与未消毒手形成的菌落来测试配制的洗手液的定性功效。化学...
Additions to the popular evaporation rate determination laboratory of alcohol-based hand-rub sanitizers are described here. Significantly, inquiry-driven protocols for formulating hand-rub sanitizers, falling-ball viscometry, and sanitizer efficacy are included. Incorporation of familiar substances (“molecular relevance”) enables students to assimilate knowledge and connect to and recognize interrelated disciplines. To stimulate engagement and project ownership, students were given the opportunity to alter sanitizer formulations by varying the amount and molecular weight of the gelling agent. Viscosities were determined using a falling-ball viscometer to integrate physics and fluid dynamics concepts into these experiments. Lastly, to stress microbiological applications and determine the efficacy of their hand sanitizers, students tested the formulated hand sanitizers for qualitative efficacy using agar plating of skin secretions and comparing colonies formed from sanitized versus nonsanitized hands. Chemi...