Improving the Chemistry, Biology, Physics/Astronomy, and Environmental Science Curricula Through Implementation of UV-Vis Spectrophotometric Laboratory Activities

通过实施紫外-可见分光光度实验室活动改进化学、生物学、物理/天文学和环境科学课程

• 批准号: 0088491
• 负责人: Scott Donnelly
• 金额: $ 3.77万
• 依托单位: Arizona Western College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-05-01 至 2004-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0088491&HistoricalAwards=false
• 关键词: Improving; Chemistry; Biology; Physics; Astronomy

Interdisciplinary (99) Chemistry (12) Physics (13) Biological Sciences (61) This multidisciplinary project is improving Arizona Western College's (AWC) Chemistry, Biology and Physics/Astronomy laboratory curricula and the joint AWC/Northern Arizona University-Yuma 2+2 Environmental Science program with new laboratory activities that use ultraviolet-visible spectroscopy (UV-Vis). AWC is designated by the Department of Education as a Hispanic Serving Institution.Experiments and protocols from a wide variety of sources including the research and educational literature are being combined and adapted to create the laboratory activities. In Chemistry courses, students use the UV-Vis to conduct a photoassisted reaction that mineralizes an organic dye, analyze the campus' pool's disinfectant capacity, test for lead in Mexican glazed pottery, and characterize the absorption spectra of two thermochromic compounds. Biology students are elucidating the structure-function molecular motif from the absorption spectra of plant pigments chlorophyll a and b, and anthocyanins. Students in Physics/Astronomy are studying how particulate matter preferentially scatters more energetic wavelengths and how the interaction between matter and light helps explain red-orange sunsets and sunrises, and cosmological phenomena. Environmental Science students are carrying out a temporal and spatial water quality study of the local desert watershed (Colorado River, Martinez and Mittry Lakes), and analyzing for ammonia and phosphate in both cultivated and uncultivated soils to determine the potential impact for contamination of the local groundwater supply. The multidisciplinary use of the UV-Vis spectrometers: 1) allows faculty to incorporate new laboratory experiments into the curriculum and hence expand topic coverage, 2) allows faculty to teach topics that were previously relegated to lecture because of non-existent instrumentation capacity, 3) gives students hands-on experience with modern instrumentation and methodology, 4) shifts student focus more towards data analysis, and 5) creates undergraduate research opportunities for community college students. The successes and challenges of implementing the spectrophotometric lab activities into the curricula will be shared with the science education community at large via journal submissions and presentations at regional and national meetings.

跨学科（99）化学（12）物理（13）生物科学（61）这个多学科项目正在改进亚利桑那西部学院（AWC）的化学，生物学和物理/天文学实验室课程和联合AWC/北方亚利桑那大学尤马2+2环境科学计划，新的实验室活动，使用紫外可见光谱（UV-Vis）。AWC是由教育部指定为西班牙裔服务机构.实验和协议从各种各样的来源，包括研究和教育文献正在结合和适应创建实验室活动.在化学课程中，学生使用紫外-可见光进行光辅助反应，使有机染料矿化，分析校园游泳池的消毒能力，测试墨西哥釉面陶器中的铅，并表征两种热致变色化合物的吸收光谱。生物系学生正在从植物色素叶绿素a和B以及花青素的吸收光谱中阐明结构-功能分子基序。物理学/天文学的学生正在研究颗粒物质如何优先散射更高能量的波长，以及物质与光之间的相互作用如何有助于解释红橙色的日落和日出以及宇宙学现象。环境科学专业的学生正在对当地沙漠流域（科罗拉多河、马丁内斯湖和米特里湖）进行时空水质研究，并分析耕作和未耕作土壤中的氨和磷酸盐，以确定当地地下水供应污染的潜在影响。紫外-可见光谱仪的多学科应用：1）允许教师将新的实验室实验纳入课程，从而扩大主题覆盖面，2）允许教师教授以前由于不存在仪器能力而被降级为讲座的主题，3）让学生亲身体验现代仪器和方法，4）将学生的重点更多地转移到数据分析，5）为社区学院学生创造本科研究机会。将分光光度计实验室活动纳入课程的成功和挑战将通过在区域和国家会议上提交期刊和演讲与整个科学教育界分享。