不同浓度柠檬酸影响茶园土壤氟释放的动力学研究OA北大核心CSCDCSTPCD
Kinetics of Fluoride Release from a Tea Garden Soil Under Different Concentrations of Citric Acid
为阐明茶树高富集土壤氟的化学机制，采用动力学方法研究了茶树根系分泌柠檬酸对茶园土壤氟形态及其在土壤固-液相分配的影响。结果表明，土壤溶出液的pH和电导率随溶出时间的增加而逐渐减小。土壤氟的释放存在快速释放和慢速释放两个阶段，呈现初始（0~6 h）溶出浓度较高，而后（6~10 h）逐渐减缓的趋势。一级动力学方程、Elovich方程、扩散方程、双常数方程均对土壤氟的溶出过程有较好的拟合，决定系数（R 2）均大于0.91。土壤溶出液中的游离态氟和总氟的…查看全部>>
Citric acid is one of organic acids excreted by tea plants. Here, the effects of citric acid on F forms and partition between solid and solution phases in a tea garden soil were investigated using a kinetic method. Soil solution pH and electric conductivity decreased with in-creasing reaction time. Release of F from the soil was quick at the beginning and then slowed down. Concentrations of F in soil solution were higher from 0 to 6 h than from 6 h to 10 h. …查看全部>>
营浩;张显晨;郜红建;宛晓春
安徽农业大学资源与环境学院，合肥 230036安徽农业大学茶叶生物化学与生物技术教育部重点实验室，合肥 230036安徽农业大学资源与环境学院，合肥 230036 安徽农业大学茶叶生物化学与生物技术教育部重点实验室，合肥 230036
农业科技
柠檬酸茶园土壤氟形态动力学
citric acidtea garden soilfluorine fractionskinetics
《农业环境科学学报》 2014 (7)
根系有机酸分泌物对茶树根土界面微域氟有效性的影响机理
1372-1378,7
国家自然科学基金（31272254）；安徽省杰出青年基金（1408085J01）
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