生态与农村环境学报 ›› 2022, Vol. 38 ›› Issue (6): 795-801.doi: 10.19741/j.issn.1673-4831.2021.0391

• 污染控制与修复 • 上一篇    下一篇

香根草对磺胺类抗生素污染水体的修复潜力研究

荣渝虹1,2,3, 张发明4, 杨娟5, 李良6, 吴珂2, 孙仕仙2, 郑毅1,2,7   

  1. 1. 西南林业大学园林园艺学院, 云南 昆明 650233;
    2. 西南林业大学国家高原湿地研究中心/湿地学院, 云南 昆明 650233;
    3. 云南省热带作物科学研究所, 云南 景洪 666100;
    4. 云南农业大学植物保护学院, 云南 昆明 650201;
    5. 西南林业大学生态与环境学院/环境修复与健康研究院, 云南 昆明 650233;
    6. 云南省动物疫病预防控制中心, 云南 昆明 650201;
    7. 云南开放大学校长办公室, 云南 昆明 650223
  • 收稿日期:2021-06-21 出版日期:2022-06-25 发布日期:2022-06-24
  • 通讯作者: 孙仕仙,E-mail:shine1009@sina.com;郑毅,E-mail:zhengyi-64@163.com E-mail:shine1009@sina.com;zhengyi-64@163.com
  • 作者简介:荣渝虹(1987-),女,云南大理人,博士生,主要研究方向为植物生态系统修复。E-mail:rongyuhong1011@163.com
  • 基金资助:
    国家自然科学基金(41867027,41563014);云南省“万人计划”青年拔尖人才专项(80201442);云南省第四批博士后定向培养资助项目 (321801)

Studies on Phytoremediation Potentials of Vetiveria zizanioides to Sulfonamides Polluted Water

RONG Yu-hong1,2,3, ZHAMG Fa-ming4, YANG Juan5, LI Liang6, WU Ke2, SUN Shi-xian2, ZHENG Yi1,2,7   

  1. 1. College of Landscape Architecture and Horticulture Sciences, Southwest Forestry University, Kunming 650233, China;
    2. National Plateau Wetland Research Center/College of Wetland, Southwest Forestry University, Kunming 650233, China;
    3. Yunnan Institute of Tropical Crops, Jinghong 666100, China;
    4. Faculty of Plant Protection, Yunnan Agricultural University, Kunming 650201, China;
    5. Institute of Environmental Remediation and Human Health/College of Ecology and Environment, Southwest Forestry University, Kunming 650233, China;
    6. Yunnan Animal Disease Prevention and Control Center, Kunming 650201, China;
    7. Office of President, Yunnan Open University, Kunming 650223, China
  • Received:2021-06-21 Online:2022-06-25 Published:2022-06-24

摘要: 为探究香根草对水体中磺胺类抗生素的净化潜力,在温室水培模拟试验条件下,采用MCX固相萃取小柱的前处理方法,以高效液相色谱-串联质谱联用仪(LC-MS)为检测仪器,添加初始浓度为100 μg·L-1的磺胺类抗生素(SAs),分析香根草及营养液中SAs的残留动态。和无植物组相比,香根草栽植第15天对磺胺吡啶(SPY)、磺胺甲唑(SMZ)、磺胺二甲氧嘧啶(SDM)和磺胺喹啉(SQX)的去除率分别提高27.88%、32.81%、29.9%和20.03%。在15 d的培养试验中,香根草对SAs的吸收在第6天和12天出现2次高峰,栽植香根草营养液中的SAs在1~6 d去除率较高。处理时间与营养液中SAs的残留浓度呈极显著负相关(P<0.01),与水体中的去除率呈极显著正相关(P<0.01);转移系数与香根草茎叶、根中的SAs浓度呈极显著正相关(P<0.01)。根系是香根草积累SAs的主要器官组织。香根草对SDM有较高的吸收能力,对SMZ、SQX有较强的根部富集能力,对SPY有较好的转运能力。综上所述,种植香根草可显著提高水体中SAs的去除率,具有较好的净化潜能。

关键词: 磺胺类抗生素, 香根草, 植物修复, 污染水体

Abstract: In order to investigate the phytoremediation potentials of Vetiveria zizanioides to sulfonamides polluted water, the trials with the pretreatment method of MCX solid-phase extraction column and high performance liquid chromatography-tandem mass spectrometry (HPLC-MS) detection method were implemented under the condition of greenhouse hydroponics. Sulfonamides (SAs) were added to the nutrient solution with the initial concentration of 100 μg·L-1. The results show that the removal rates of Vetiveria zizanioides to sulfonamides (SAs) increased by 27.88% for sulfapyridine (SPY), 32.81% for sulfamethoxazole (SMZ), 29.9% for sulfadimethoxine (SDM) and 20.03% for sulfaquinoline (SQX), in comparison of no Vetiveria zizanioides treatment for the 15th day. The absorption peaks of SAs by Vetiveria zizanioides were on the 6th and 12th day, and the decrease rates of SAs in Vetiveria zizanioides nutrient solution were higher in the the first 6 days. There was a significant negative correlation between the treatment time and the residual concentration of SAS in nutrient solution (P<0.01), and a significant positive correlation between the treatment time and the increasing proportion of the removal rates in water (P<0.01). The transfer coefficients were significantly positive correlated with the concentration of SAS in the stems, leaves and roots of Vetiveria zizanioides (P<0.01). Root systems of Vetiveria zizanioides were the main organ tissues in accumulating SAs. In conclusion, Vetiveria zizanioides are of efficient absorbing capability to SDM, strong root enrichment ability to SMZ and SQX, and efficient transferring ability to SPY. Vetiver zizanioides can significantly remove SAs in polluted water.

Key words: sulfonamides, Vetiveria zizanioides, phytoremediation, polluted water

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