作　　者： ; ; ; ; ;

机构地区： 广州大学环境科学与工程学院广州市污染控制与同位素应用技术重点实验室

出　　处： 《分析化学》 2008年第8期1125-1128,共4页

摘　　要： 采用电感耦合等离子体质谱分析铊胁迫水稻中的Tl、Cr、Co、Ni、Cu、Zn、Mo、Ag、Cd及Pb等重金属元素,并利用原位衰减全反射红外光谱分析了水稻活体叶片的光谱特征。结果表明,铊在水稻叶茎中的含量显著高于谷粒。铊会影响水稻对其它元素吸收,并且在叶与种子中不同元素的吸收积累规律存在差异。水稻叶片的原位衰减全反射红外光谱进一步显示,铊胁迫下叶片的CO2消耗速率明显减少,表明叶片的光合作用受到一定抑制。利用原位衰减全反射红外光谱可直观表现重金属铊对水稻生理过程的胁迫作用。 Contents of T1 and other heavy metal elements Cr,Co,Ni,Cu,Zn.Mo,Ag ,Cd and Pb in rice which grew in thallium contaminated soil were determined by inductively coupled plasma mass spectrometry （ICPMS） , and the photosynthesis of rice leaf under thallium stress was investigated by the in situ attenuated total reflection FTIR （in situ ATR-FTIR）. The results showed that the concentration of thallium in leaf was much more than that in seed. Thallium would disturb other elements distribution and absorption in rice and different elements had different accumulation rules in leaf and seed of rice. Analyzed by the in situ attenuated total reflection FTIR, the carbon dioxide consumption speed rate of leaf was obviously slower than that of the blank. It expressed that the leaf photosynthesis under thallium stress was depressed. The photosynthesis of rice leaf could represent directly the repression of physiological process of rice under thallium stress.

关 键 词： 电感耦合等离子体质谱 原位衰减全反射红外光谱 水稻 铊胁迫 光合作用

领　　域： [理学] [理学] [理学] [理学]