香根草对水体中磺胺嘧啶单一及联合污染的去除动态研究  

Studies on the Dynamic Process to Remove Single and Joint Sulfadiazine Pollution by Vetiveria zizanioides from Aqueous Media

作　　者：荣渝虹 孙仕仙[1,4] 张发明 李良 李荣彪 罗超 郑毅[2,9] Rong Yuhong;Sun Shixian;Zhang Faming;Li Liang;Li Rongbiao;Luo Chao;Zheng Yi(Yunnan Key Laboratory of Plateau Wetland Conservation,Restoration and Ecological Services,Southwest Forestry University,Kunming Yunnan 650233,China;College of Landscape Architecture and Horticulture,Southwest Forestry University,Kunming Yunnan 650233,China;Yunnan Institute of Tropical Crops,Xishuangbanna Yunnan 666100,China;National Plateau Wetlands Research Center/College of Wetlands,Southwest Forestry University,Kunming Yunnan 650233,China;College of Plant Protection,Yunnan Agricultural University,Kunming Yunnan 650201,China;Yunnan Animal Disease Prevention and Control Center,Kunming Yunnan 650201,China;College of Resources and Environment,Yunnan Agricultural University,Kunming Yunnan 650201,China;College of Forestry,Guizhou University,Guiyang Guizhou 550025,China;College of Rural Revitalization Education,Yunnan Open University,Kunming Yunnan 650101,China)

机构地区：[1]西南林业大学云南省高原湿地保护修复与生态服务重点实验室,云南昆明650233 [2]西南林业大学园林园艺学院,云南昆明650233 [3]云南省热带作物科学研究所,云南西双版纳666100 [4]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 [5]云南农业大学植物保护学院,云南昆明650201 [6]云南省动物疫病预防控制中心,云南昆明650201 [7]云南农业大学资源与环境学院,云南昆明650201 [8]贵州大学林学院,贵州贵阳550025 [9]云南开放大学乡村振兴教育学院,云南昆明650101

出　　处：《西南林业大学学报（自然科学）》2023年第6期79-90,共12页Journal of Southwest Forestry University：Natural Sciences

基　　金：云南省科技计划项目(202201AS070028)资助;云南省高原湿地保护修复与生态服务重点实验室开放基金项目(202105AG070002)资助;国家自然科学基金项目(41867027,51463014)资助;云南省“万人计划”青年拔尖人才专项(80201442)资助;云南省第四批博士后定向培养项目(321801)资助。

摘　　要：为明确香根草对磺胺嘧啶(SDZ)单一及联合不同磺胺类抗生素(SAs)污染的去除潜力,通过为期15 d的温室水培模拟试验,在起始浓度为100μg/L的磺胺嘧啶和各100μg/L的5种磺胺抗生素(磺胺吡啶、磺胺嘧啶、磺胺甲噁唑、磺胺喹噁啉、磺胺二甲氧嘧啶)联合污染的水培条件下,采集了香根草的生长指标、水体溶液和香根草组织中SDZ的浓度变化,以评估香根草对SDZ的吸收、富集、转移和去除动态。结果表明:SDZ或SAs胁迫下,香根草地上部和根系长度与对照(无污染物)相比差异均不显著。污染暴露的第15天,培养液中种植香根草经单一(CP+SDZ)和联合污染(AP+SAs)处理的去除率分别为38.49%和33.47%,比无植物对照组分别提高了13.47%和15.45%;单一SDZ污染组中香根草对SDZ的去除能力显著强于SAs联合污染,二组水培溶液中的残留浓度分别为61.51、66.52μg/L,t0.99降解周期分别为88 d和111 d,比无植物对照组分别缩短了49、75 d。CP+SDZ组根部和茎叶富集系数均高于AP+SAs组,香根草对SDZ的根部富集能力比茎叶强,富集能力均小于1,转移系数TF处于0.2~0.4间。虽然香根草直接吸收、转运SDZ的浓度有限,但可以有效促进水环境中SDZ的去除。香根草在SDZ培养液中的净去除率与培养液去除率、培养时间、地上富集系数、地上SDZ浓度具有直接关联作用。In order to investigate the removal capacity of Vetiveria zizanioides for single treatments of sulfadiazine(SDZ)and joint treatments with different kinds of sulfonamides,an experiment was conducted under the condition of simulated hydroponics in greenhouse for 15 days.Contaminants under study included single kind of SDZ with initial concentration of 100μg/L,at the same time,5 kinds of sulfonamides(sulfapyridine,sulfadiazine,sulfamethoxazole,sulfadimethoxine,sulfaquinoline)with each concentration of 100μg/L were added to the hydroponic solution.The growth index of V.zizanioides,the concentration change of SDZ in hydroponic solution and V.zizanioides tissues were collected,the purposes were to evaluate the absorption,enrichment,transfer and remove of SDZ by V.zizanioides.The results indicated that there were no significant differences in the length of the shoots and roots of V.zizanioides under SDZ or SAs stress compared with the no pollutants group.On the 15th day of contamination exposure,the removal rates of single(Cp+SDz)and joint(Ap+SAs)treatments in the hydroponic solution of V.zizanioides group were 38.49%and 33.47%respectively,which were 13.47%and 15.45%higher than those of the control group without plants.The removal ability of V.zizanioides for SDZ in the single pollution group was significantly stronger than that of SAs joint pollution.The residual concentrations in 2 groups of hydroponic solutions were 61.51μg/L and 66.52μg/L respectively.And the degradation period of 99%SDZ were 88 and 111 days,which were 49,75 days shorter than those in the control group without plants.The enrichment coefficients of roots and shoots in the Cp+SDz group were higher than those in the Ap+SAs groups.The accumulation ability of roots of V.zizanioides to SDZ was stronger than that of shoots,and the enrichment coefficients were all less than 1.The transfer coefficient TF was within the range of 0.2-0.4.Although the concentration of SDZ absorbed and transported by V.zizanioides directly were limited,but it could effective

关 键 词：植物修复 磺胺嘧啶 香根草 水体 去除动态 

分 类 号：X52[环境科学与工程—环境工程]