泉州师范学院学报
泉州師範學院學報
천주사범학원학보
Journal of Quanzhou Normal College
2013年
2期
70~74
,共null页
黄晓冬 李裕红 钟淑红 林锦彬
黃曉鼕 李裕紅 鐘淑紅 林錦彬
황효동 리유홍 종숙홍 림금빈
超氧阴离子自由基 羟自由基 丙二醛 BaP 可口革囊星虫
超氧陰離子自由基 羥自由基 丙二醛 BaP 可口革囊星蟲
초양음리자자유기 간자유기 병이철 BaP 가구혁낭성충
superoxide anion free radical; hydroxyl free radical MDA ; BaP Phascolosoma esculenta
为评价泉州湾底栖生物可口革囊星虫对有机污染物BaP的暴露风险，研究了BaP对可口革囊星虫体壁中氧自由基和丙二醛含量等因子的影响．结果表明：BaP对可口革囊星虫产生的氧自由基及膜脂过氧化伤害受暴露剂量和时间的双重影响．在20～500ng／gBaP浓度范围，超氧阴离子自由基含量随着BaP浓度以及暴露时间的延长呈显著上升变化，可口革囊星虫体壁丙二醛含量和羟自由基含量在BaP暴露1～4d内随暴露浓度的升高而显著增高；在暴露时间达7d时，各处理组丙二醛含量与BaP暴露4d之间无显著性差异，羟自由基含量则下降到与空白对照含量相当的水平．可口革囊星虫氧自由基和丙二醛含量可作为海洋环境BaP污染的早期预警生物标志物．
為評價泉州灣底棲生物可口革囊星蟲對有機汙染物BaP的暴露風險，研究瞭BaP對可口革囊星蟲體壁中氧自由基和丙二醛含量等因子的影響．結果錶明：BaP對可口革囊星蟲產生的氧自由基及膜脂過氧化傷害受暴露劑量和時間的雙重影響．在20～500ng／gBaP濃度範圍，超氧陰離子自由基含量隨著BaP濃度以及暴露時間的延長呈顯著上升變化，可口革囊星蟲體壁丙二醛含量和羥自由基含量在BaP暴露1～4d內隨暴露濃度的升高而顯著增高；在暴露時間達7d時，各處理組丙二醛含量與BaP暴露4d之間無顯著性差異，羥自由基含量則下降到與空白對照含量相噹的水平．可口革囊星蟲氧自由基和丙二醛含量可作為海洋環境BaP汙染的早期預警生物標誌物．
위평개천주만저서생물가구혁낭성충대유궤오염물BaP적폭로풍험，연구료BaP대가구혁낭성충체벽중양자유기화병이철함량등인자적영향．결과표명：BaP대가구혁낭성충산생적양자유기급막지과양화상해수폭로제량화시간적쌍중영향．재20～500ng／gBaP농도범위，초양음리자자유기함량수착BaP농도이급폭로시간적연장정현저상승변화，가구혁낭성충체벽병이철함량화간자유기함량재BaP폭로1～4d내수폭로농도적승고이현저증고；재폭로시간체7d시，각처리조병이철함량여BaP폭로4d지간무현저성차이，간자유기함량칙하강도여공백대조함량상당적수평．가구혁낭성충양자유기화병이철함량가작위해양배경BaP오염적조기예경생물표지물．
The dose-and time-related effects of benzo（a）pyrene （BaP） on Phascolosoma esculenta of Quanzhou Bay were studied to evaluate the exposure risk to BaP.Phascolosorna esculenta were exposed to different concentrations of BaP （20,100,500 ng/g） for 1 d,4 d and 7 d.The results showed that both the dose and the exposure time effect the production of oxygen free radicals and lipid peroxidation of Phascolosorna esculenta bodywall induced by BaP. When Phascolosorna esculenta are treated with the concentration of 20 ng/g, 100 ng/g and 500 ng/g BaP, the production of superoxide anion free radical of Phascolosoma esculenta bodywall significantly increase with increasing BaP concentration and prolonging exposure time,and the concentrations of MDA and hydroxyl free radical also increases with the increase of BaP concentration. Both MDA and hydroxyl free radical showed an increase tendency with the prolonged exposure within 4 days,while the MDA concentrations of Phascolosorna esculenta bodywall between the exposure group with 4days and the exposure group with 7 days had not significant change,and the concentrations of the bodywall hydroxyl free radical in each exposure group declined to the control group level .The results also suggested the production of oxygen free radicals and lipid peroxidation of Phascolosoma esculenta could be served as a biomarker of an early warning system in risk of BaP pollution in marine environment.
