| 毒性有机物BPA与普通小球藻的相互影响特性研究 |
| 摘要点击 2275 全文点击 1094 投稿时间：2013-08-12 修订日期：2013-09-28 |
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| 中文关键词 普通小球藻 双酚A（BPA） 细胞密度 叶绿素a 抑制或促进 |
| 英文关键词 Chlorella vulgaris bisphenol A cell density chlorophyll a promotion or inhibition |
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| 中文摘要 |
| 考察了不同浓度双酚A（BPA）对普通小球藻（Chlorella vulgaris）生长特性的影响，以及普通小球藻生长过程对BPA的去除效能.研究表明，低浓度BPA（0~20 mg·L-1）对普通小球藻生长具有促进作用，而高浓度BPA（20~50 mg·L-1）对普通小球藻生长具有抑制作用，且抑制效应与BPA浓度呈正相关关系.低剂量BPA（<20 mg·L-1）对叶绿素含量并无明显的影响，高剂量BPA（>20 mg·L-1）造成叶绿素含量降低.在BPA初始浓度2~50 mg·L-1的范围内，普通小球藻对其都有一定的去除效能，单位普通小球藻对BPA去除速率与其初始浓度呈正相关关系.BPA投加量为50 mg·L-1时，BPA去除速率最大，且最大速率出现于延滞期与对数期之间. |
| 英文摘要 |
| The effects of different concentrations of bisphenol A (BPA) on Chlorella vulgaris and removal capacity of BPA by Chlorella vulgaris were investigated. Results showed that a low concentration (0-20 mg·L-1) of BPA promoted the growth of Chlorella vulgaris, whereas a relative high concentration (20-50 mg·L-1) of BPA inhibited the growth of Chlorella vulgaris, and the inhibition effect was positively correlated with the concentration of BPA. Likewise, a high dose of initial BPA (>20 mg·L-1) led to a decline in the content of chlorephyll a. Chlorella vulgaris had BPA removal capacity when initial BPA concentration ranged from 2 mg·L-1 to 50 mg·L-1. There was positive correlation between the removal rate of BPA per cell and initial BPA concentration. The removal rate of BPA was the highest when initial BPA was 50 mg·L-1, which appeared between lag phase and logarithmic phase. |
