| .羊角月牙藻（Selenastrum carpricornutum）对1，２，4-三氯苯的降解效应研究[J].农业环境科学学报,2013,32(5):. |
| 羊角月牙藻（Selenastrum carpricornutum）对1，２，4-三氯苯的降解效应研究 |
| The Degradation Characteristics of 1,2,4-Trichlorobenzene by Selenastrum carpricornutum |
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| DOI：10.11654/jaes.2013.05.008 |
| 中文关键词: 羊角月牙藻 １，２，４－三氯苯 降解 |
| 英文关键词: Selenastrum carpricornutum 1,2,4-TCB degradation |
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| 中文摘要: |
| 研究了羊角月牙藻对１，２，４－三氯苯（１，２，４－Ｔｒｉｃｈｌｏｒｏｂｅｎｚｅｎｅ，１，２，４－ＴＣＢ）的降解效应。结果显示，羊角月牙藻对初始浓度为０．５、１．０、５．０、１０、２０、３０ ｍｇ·Ｌ－１的１，２，４－ＴＣＢ均有一定降解能力。１，２，４－ＴＣＢ初始浓度不同，藻类的降解能力不同，其中１，２，４－ＴＣＢ浓度为１．０ ｍｇ·Ｌ-1时，降解率最高达到５２．８％，其降解半衰期为６．６２ ｄ。当１，２，４－ＴＣＢ的初始浓度为５ ｍｇ·Ｌ-1以上时，羊角月牙藻早期生长受到抑制，但是当藻类度过适应期后，藻类的生长能力逐渐恢复，说明１，２，４－ＴＣＢ对藻细胞的损伤属于非致死性损伤。应用气质联用仪对降解产物测定结果表明，苯环上氯取代基被其他较活泼基团所取代的反应是羊角月牙藻降解１，２，４－ＴＣＢ的主要途径。 |
| 英文摘要: |
| The degradation effects and mechanism of 1,2,4-Trichlorobenzene（1,2,4-TCB） in Selenastrum carpricornutum were discussed in this paper. The results showed that the degradation abilities differs with initial 1,2,4-TCB concentrations. The highest degradation rate was 52.8% occurs at 1.0 mg·L-1, and the half life of degradation was 6.62 d. The growth of Selenastrum carpricornutum was inhibited when initial concentration of 1,2,4-TCB was above 5 mg·L-1, but the growth ability of Selenastrum carpricornutum was recovered when the alga lived through the adaptive phase. Further determination with GC-MS analysis technique showed that the major degradation pathway of 1,2,4-TCB was the replacement of chloric substituent by other active groups. |
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