主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报 ›› 2013, Vol. 29 ›› Issue (3): 102-106.doi:

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化学融雪剂对小球藻生长和生理特性的影响

胡水1,2 李法云2,3 范志平2 程志辉1,3 高群1,2 张营1,3   

  1. 1.辽宁大学环境学院，辽宁 沈阳 110036；2.辽宁石油化工大学生态环境研究院，辽宁 抚顺 113001；3.辽宁省水环境生物监测与水生态安全重点实验室，辽宁 沈阳 110036
  • 出版日期:2013-06-29 发布日期:2013-06-29

The effect of deicing salt on growth and physiological features of Chlorella vulgaris

HU Shui 1,2 LI Fa-yun2,3 FAN Zhi-ping2 CHENG Zhi-hui1,3 GAO Qun 1,2 ZHANG Ying1,3   

  1. 1.School of Environmental Science, Liaoning University, Shenyang 110036, China; 2. Institute of Eco-environmental Sciences, Liaoning Shihua University, Fushun 113001, China; 3. Liaoning Key Laboratory of Biological Monitoring for Water Environment and Water Eco-security, Shenyang 110036, China
  • Online:2013-06-29 Published:2013-06-29

PDF (PC)

320

被引次数

2

摘要： 寒冷地区道路表面除雪化冰使用的化学融雪剂随着地表径流进入水体，将影响水生态系统中的水生生物正常生长，并破坏水生态系统平衡。为研究化学融雪剂对水生生物的毒性效应，分析了不同浓度有机融雪剂对小球藻生长特征、藻细胞光和色素、蛋白质及多糖含量的影响。结果表明：浓度为2 g·L-1时有机融雪剂对小球藻生长无明显影响，当融雪剂浓度为4 g·L-1时，小球藻细胞生长表现出明显抑制效应，且抑制效应随融雪剂浓度增加呈显著上升趋势(P<0.01)；当融雪剂浓度小于4 g·L-1时，有机融雪剂对小球藻细胞内叶绿素a合成有明显促进作用，但随着有机融雪剂处理浓度升高，藻细胞内叶绿素a含量逐渐下降。当融雪剂的处理浓度大于4 g·L-1的时候，藻细胞内蛋白质和多糖含量与对照组相比呈显著下降趋势(P<0.01)。这说明融雪剂浓度高于4 g·L-1时会抑制水体中小球藻正常生长繁殖，破坏藻体细胞，最终导致水生态系统平衡被破坏。

关键词: 有机融雪剂, 小球藻, 生长, 叶绿素, 蛋白质, 多糖

Abstract: Deicing salt was applied for clearing ice and snow on road in winter and entered into river with the surface runoff, so it affected the growth of aquatic organism and broke the equilibrium of aquatic ecosystem. In order to study the toxic effect of deicing salt on aquatic organisms, the effects of deicing salt on the growth, the content change of photosynthesis pigments, protein and polysaccharides of Chlorella vulgaris were analyzed. The results show that there is no significant effect for the growth of Chlorella vulgaris when the deicing salt concentration is 2 g·L-1. However, there is a  significant inhibitory effect on the cell growth of Chlorella vulgaris when it is 4 g·L-1, and the inhibitive effect of deicing salt significantly increases (P<0.01) with the increase of the concentrations. There is the significant stimulative effect on biosynthesis of chlorophyll (a) in a cell of Chlorella vulgaris when it is less than 4 g·L-1, while the chlorophyll (a) contents decrease with further increase of deicing salt concentrations. Compared with the control, protein and polysaccharides contents decrease (P<0.01) significantly when it is more than 4 g·L-1. It suggests that the growth and reproduction of Chlorella vulgaris will be inhibited and the cell will be destroyed when deicing salt concentration is more than 4 g·L-1, and finally it will break the balance of aquatic ecosystem.

Key words: Deicing salts, Chlorella vulgaris, Growth, Chlorophyll (a), Protein, Polysaccharides