钝化材料对土壤中可提取态镉含量影响的测定

Determination of the Influence of Passivation Material on the Content of Extracted Cadmium in Soil

科研反哺教学是提高高校培养人才质量的重要手段。该实验设计充分考虑内容、规模、时间和管理等方面的问题,选取系列研究成果中的一个知识点,相对独立,且具有探索研究实验的特点。实验对3种钝化材料(羟基磷灰石、小麦生物炭、改性坡缕石)处理的供试土壤,进行4种提取剂(DTPA、0.1 mol/L盐酸、0.01 mol/L CaCl_(2)、去离子水)的镉含量测定,判定供试土壤类型的最佳钝化材料为改性坡缕石,提取剂为DTPA。实验安排体现了个体操作与群体合作,基础操作与现代仪器设备结合。实验内容既传递了学科领域前沿进展,又兼顾了科学研究工作工具的介绍和使用,符合创新人才模式培养的要求。

The scientific research feeding teaching is an important means to improve the quality of cultivating talents in universities.The content,scale,time and management problems were considered fully in this experiment.A knowledge point from the series of research results was selected,which was relatively independent and had the characteristic of exploration.The cadmium content of the four kinds of extractors(DTPA,0.1 mol/L HCl,0.01 mol/L CaCl_(2) and DI-water)was determined for the test soil treated with three passivation materials(HAP,WB and TMP),and the best passivation material TMP and the extractor DTPA of the tested soil type were determined.The experiment design integrated the individual operation and group cooperation as well as the basic operation and modern equipment.This experiment not only conveyed the cutting-edge progress of the discipline field,but also taught students to use the scientific research tools,which conforms to the requirements of innovative talent model training.