• 关键词：亚硝基自由基  脉冲辐解  羟基肉桂酸衍生物  反应动力学

• 基金项目：国家自然科学基金

• 张周恩
• 中国科学院上海原子核研究所辐射化学开放实验室, 上海 201800

• 姚思德
• 中国科学院上海原子核研究所辐射化学开放实验室, 上海 201800

• 王文锋
• 中国科学院上海原子核研究所辐射化学开放实验室, 上海 201800

• 林维真
• 中国科学院上海原子核研究所辐射化学开放实验室, 上海 201800

• 林念芸
• 中国科学院上海原子核研究所辐射化学开放实验室, 上海 201800

• 摘要：利用脉冲辐解方法,研究了阿魏酸、芥子酸(HCA)快速清除NO₂的机理,测得NO₂从HCA抽氢反应的动力学常数为(7.2-7.4)×10⁸dm³·mol^-1·s^-1量级,并发现在弱酸性条件下HCA也能有效清除HNO₂.

• Abstract：Influences of selenite and funlvic acid (FA) on the sugar metabolism in wheat seedling were studied by greenhouse hydroponical experiment. The results showed that selenite can stimulate the sugar metabolism in wheat seedling in the early stage of growth and the process was inhibited by the existence of soil FA. At later stage, selenite turns to inhibit the sugar metabolism and FA plays an role of detoxication, so as to maintain the higher level of sugar metabolism. Since there is a significant correlation between the content of soluble saccharides and activity of α amylase, the influence of the interaction between selenite and FA on plant growth could be due to the action on the related enzymatic processes.

• Key words：selenite  fulivc acid  wheat  sugar metabolism

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