研究论文
顾志忙,王晓蓉,顾雪元,戴乐美,陈逸君.富里酸对小麦植株积累稀土元素的影响[J].环境科学学报,2001,21(3):333-337
富里酸对小麦植株积累稀土元素的影响
- Effects of fulvic acid on the bioaccumulation of rare earth elements in wheat seedling
- 基金项目：国家自然科学基金项目(编号298902801);江苏省自然科学基金项目(编号BK99468)
- 作者
- 单位
- 顾志忙
- 南京大学环境学院污染控制与资源化研究国家重点实验室,南京 210093
- 王晓蓉
- 南京大学环境学院污染控制与资源化研究国家重点实验室,南京 210093
- 顾雪元
- 南京大学环境学院污染控制与资源化研究国家重点实验室,南京 210093
- 戴乐美
- 南京大学现代分析中心
- 陈逸君
- 南京大学现代分析中心
- 摘要：从我国东北黑土中提取和纯化富里酸.采用水培方法研究了富里酸对小麦植株生物积累稀土元素(La3+,Ce3+,Sm3+,Gd3+,Y3+)的影响.结果表明,在所试验的多种浓度中,当富里酸浓度低于0.26mg(C)L时,小麦积累稀土元素受到促进;而当富里酸浓度大于0.65mg(C)L时,稀土元素在小麦植株中的积累受到
- Abstract：Fulvic acid was extracted Black Soil of Heilongjiang in China. The effects of fulvic acid on the bioaccumulation of five REEs (La 3+,Ce 3+,Sm 3+,Gd 3+,Y 3+) in wheat seedling were investigated. The results showed that low concentration of fulvic acid was (<0.26mg (C)/L,can increase the bioaccumulation values of REEs in wheat root and above ground parts (stem and leaves)increased; when the concentration of fulvic acid was higher than 0.65 mg (C)/L, the bioaccumulation values decreased. Kinetic experimental results indicated that bioaccumulation values of REEs in root in 30 days were correlated with the linear growth equation (correlation coefficient are higher than 86%) in the culture solution containing 2.0mg/L REEs and different concentration fulvic acid,of while there was none linear relation in slem and leaves.The bioaccumulation values of REEs in wheat root was much higher than in wheat stem and leaves.
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