摘要
鲁米诺(3-氨基-苯二甲酰肼)作为一种化学发光试剂,在碱性水溶液中可被氧化剂氧化,产生激发态分子,当激发态分子回到基态时会以蓝光的形式释放能量,该现象明显且富有观赏性.基于此,本工作选用日常生活中的爆炸盐和84消毒液,分别用于替代实验室中的碱性试剂和氧化剂,促进化学发光科普实验的生活化.面对不同知识储备人群,有针对性地进行梯度科普教育:(1)对低龄儿童及青少年,设计并开展了系列趣味实验活动,如"蓝色雨""蓝色火焰"等,传递化学之趣,寓教于乐,在拓展化学知识的同时体验化学实验的乐趣;(2)对有专业知识背景的本科生,设计了利用化学发光分析仪对爆炸盐中过氧化物的含量进行测定,从解决实际问题入手,激发学习兴趣,加强实验操作技能的训练并提高逻辑思维能力;(3)对社会普通大众,通过生活实际中的化学实验过程,有利于帮助他们走出化学发光的认知误区,透过现象看本质,提升大众理性思维和科学素质.
Abstract
Luminol(3-Aminophthalhydrazide)serves as a chemiluminescent reagent that,when oxidized by an oxidant in an alkaline aqueous solution,generates excited state molecules.Upon returning to the ground state,these molecules emit energy in the form of visible blue light,which is both striking and aesthetically appealing.This work enhances the outreach of chemiluminescence experiments by substituting laboratory alkaline reagents and oxidants with everyday items like explosive salts and disinfectants(e.g.,84 disinfectant).Targeted gradient science popularization efforts are tailored for different levels of scientific knowledge:(1)Engaging young children and adolescents with entertaining experiments such as"Blue Rain"and"Blue Flame"to foster interest in chemistry through enjoyable educational activities.(2)Designing experiments for undergraduate students with a strong scientific background to utilize chemiluminescence analyzers for measuring peroxide content in explosive salts,thereby enhancing practical problem-solving skills,experimental proficiency,and logical reasoning.(3)Educating the general public through everyday chemical experiments to dispel misconceptions about chemiluminescence,promoting a deeper understanding of scientific principles and improving rational thinking and scientific literacy.
基金项目
河北省高等教育教学改革研究与实践项目(2023GJJG122)
河北师范大学教学改革研究与实践项目(2023XJJG075)
河北师范大学教学改革研究与实践项目(2023XJJG006)
河北省研究生教育教学改革研究项目(YJG2024044)
河北师范大学研究生教育教学改革研究项目(XYJG202319)
万方数据