Effects of Graphene Oxide on the Growth and Photosynthesis of the Emergent Plant Iris pseudacorus
作者：
Zhou, Zixin;Li, Jiaxin;Li, Cui;Guo, Qiang;Hou, Xincun;...
期刊：
Plants-Basel ,2023年12(9):1738- ISSN：2223-7747
通讯作者：
Chuansheng Chen<&wdkj&>Qinghai Wang
作者机构：
[Zhou, Zixin; Li, Jiaxin; Chen, Chuansheng] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Peoples R China.;[Hou, Xincun; Zhou, Zixin; Li, Cui; Guo, Qiang; Li, Jiaxin; Wang, Qinghai; Zhao, Chunqiao] Beijing Acad Agr & Forestry Sci, Inst Grassland Flowers & Ecol, Beijing 100097, Peoples R China.;[Wang, Yu] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China.
通讯机构：
[Chuansheng Chen; Qinghai Wang] A;Authors to whom correspondence should be addressed.<&wdkj&>Institute of Grassland, Flowers and Ecology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
关键词：
aquatic plant;graphene oxide;photosynthesis;plant nutrients
摘要：
<jats:p>The extensive applications of graphene oxide (GO) inevitably lead to entry into the natural aquatic environment. However, information on its toxicity to emergent plants is still lacking. In this study, an emergent plant, Iris pseudacorus, was exposed to GO (1, 20, 80, and 140 mg·L−1) under hydroponic conditions for 15 weeks. Changes in plant growth were assessed by analyzing plant biomass and photosynthetic pigment contents; the photosynthesis response was verified by measuring chlorophyll a fluorescence; and the nutrient levels of the plant were evaluated. Results showed that GO at 20–140 mg·L−1 significantly increased plant dry weight by 37–84% and photosynthetic pigment contents by 26–178%, and 80 mg·L−1 was the optimal concentration. PSII activity, adjustment capacities of electron transport in PSII, the grouping or energetic connectivity between PSII units, light energy conversion efficiency, photosynthesis performance indexes (by 11–51%), and contents of several nutrient elements (N, Fe, and Cu) were increased by 49–69%, 34–84%, and 11–38%, respectively. These findings indicate that GO can enhance plant growth by promoting plant photosynthesis performance and improving plant nutrient levels, and has great application potential in promoting the growth and development of this emergent plant as a phytoremediation agent.</jats:p>
语种：
英文
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Fe2+耦合热活化过硫酸盐降解土壤中四溴双酚A
作者：
李韬略;袁雪红;陈传胜;孙美桢;薛南冬
期刊：
环境化学 ,2023年42(8):2730-2739 ISSN：0254-6108
作者机构：
[李韬略] 中南林业科技大学环境科学与工程学院,长沙,410004;[李韬略] 生态环境部土壤与农业农村生态环境监管技术中心,北京,100012;中国环境科学研究院,北京,100012;[陈传胜] 中南林业科技大学;[孙美桢; 薛南冬; 袁雪红] 生态环境部土壤与农业农村生态环境监管技术中心
关键词：
四溴双酚A;均相催化剂;亚铁离子;过硫酸盐;高级氧化.
摘要：
有效降解和去除土壤中四溴双酚A(TBBPA)是土壤环境化学研究热点.本文研究了Fe2+耦合热活化过硫酸盐体系(Fe2+/热/PS)对土壤中TBBPA的降解,并考察温度、Fe展开更多 有效降解和去除土壤中四溴双酚A(TBBPA)是土壤环境化学研究热点.本文研究了Fe2+耦合热活化过硫酸盐体系(Fe2+/热/PS)对土壤中TBBPA的降解,并考察温度、Fe2+初始浓度、PS浓度、初始pH值、无机阴离子(Cl−、HCO3-)浓度以及金属离子(Cu2+、Zn2+、Ni2+)浓度的影响.结果表明,Fe2+/热/PS降解TBBPA的效果远高于同等条件下单一热活化和Fe2+活化的情况;提高温度和PS浓度能够促进土壤TBBPA的降解;而过量的亚铁离子会导致TBBPA去除率下降,Fe2+与PS的最佳摩尔比为0.5:1;Fe2+耦合热活化PS体系具有较宽的pH应用范围,在酸性条件下更有利于降解;温度55℃、Fe2+浓度25 mmol·L−1、PS浓度50 mmol·L−1、pH=3下,土壤TBBPA初始浓度为20 mg·kg−1,培养12 h,土壤TBBPA的降解效率达到了100%;低浓度Cl−对Fe2+/热/PS体系的影响不显著,高浓度的Cl−会促进TBBPA的降解,而HCO3-在研究浓度范围内均呈现抑制作用;Cu2+和Ni2+对Fe2+/热/PS体系均表现出较好的促进作用,而随着Zn2+浓度的增加,TBBPA的降解速率呈现出先减小后增大的变化.
语种：
中文
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Phytotoxicity of atrazine combined with cadmium on photosynthetic apparatus of the emergent plant species Iris pseudacorus
作者：
Wang, Qinghai* ;Xie, Dongyu;Peng, Lei;Chen, Chuansheng;Li, Cui;...
期刊：
Environmental Science and Pollution Research ,2022年29(23):34798-34812 ISSN：0944-1344
通讯作者：
Wang, Qinghai;Que, Xiaoe
作者机构：
[Li, Cui; Xie, Dongyu; Wang, Qinghai] Beijing Acad Agr & Forestry Sci, Beijing Res & Dev Ctr Grass & Environm, Beijing 100097, Peoples R China.;[Xie, Dongyu; Peng, Lei; Chen, Chuansheng] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Peoples R China.;[Que, Xiaoe] Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China.
通讯机构：
[Wang, Qinghai] B;[Que, Xiaoe] C;Beijing Acad Agr & Forestry Sci, Beijing Res & Dev Ctr Grass & Environm, Beijing 100097, Peoples R China.;Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China.
关键词：
Combined pollution;Atrazine;Cadmium;Joint toxicity;Aquatic plant;Photosynthetic fluorescence
摘要：
The combined pollution, instead of single pollution, has become a widespread contamination phenomenon in aquatic environment. However, little information is now available about the joint effects of the combined pollution, especially co-existed pesticides and heavy metals, on aquatic plants. In the present study, using continuous excitation chlorophyll fluorescence parameters and the OJIP transient, comparisons of herbicide atrazine (ATZ) phytotoxicity on Iris pseudacorus between in the presence and absence of cadmium (Cd) were evaluated over an exposure period of three weeks under laboratory conditions. Results showed that both ATZ and Cd were toxic to I. pseudacorus. The ratio Fv/Fo, specific electron transport energy (ET0/RC), and photochemistry efficiency (PIabs and PItotal) of this emergent plant species at individual ATZ and Cd concentrations were significantly lower than those of the control. ATZ mainly inhibited electron transport beyond QA at PSII acceptor side as indicated by the sharp rise of the J-step level of fluorescence rise kinetics. A pronounced K-step and the loss of I-step due to the damage on the OEC and PSI also occurred when ATZ was at or above 1.0mg·L−1. In comparison to ATZ alone, ATZ combined with Cd resulted in a lower amplitude rise in J-step with apparent J-I and I-P phases; and significantly lower Fo with higher Fv/Fo, as well as greater ET0/RC with higher values of PIabs and PItotal. However, the adverse influences of ATZ combined with Cd on the above indicators were still significant as compared with the control. Therefore, the coexistence of Cd alleviated the individual phytotoxicities of ATZ, whereas combined pollution of ATZ and Cd still induced the decline in photosynthetic performance of I. pseudacorus, and its potential ecological impacts on the aquatic vegetation cannot be ignored. Our findings offer a better understanding of the joint effects of the pesticide and heavy metal on non-target aquatic plants, and provided valuable insights into the interaction of these pollutants in aquatic environment. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
语种：
英文
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Effects of Graphene Oxide on Atrazine Phytotoxicity Effects of Graphene Oxide on Photosynthetic Response of Iris Pseudacorus to Atrazine Stress and Accumulation of Atrazine in the Plant
作者：
Peng, Lei;Xie, Dongyu;Li, Cui;Guo, Qiang;Chen, Chuansheng;...
期刊：
Bulletin of Environmental Contamination and Toxicology ,2022年108(6):1033-1038 ISSN：0007-4861
通讯作者：
Chen, CS;Wang, QH
作者机构：
[Chen, Chuansheng; Xie, Dongyu; Peng, Lei] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Peoples R China.;[Wang, Qinghai; Li, Cui; Guo, Qiang; Xie, Dongyu; Peng, Lei] Beijing Acad Agr & Forestry Sci, Beijing Res & Dev Ctr Grass & Environm, Beijing 100097, Peoples R China.
通讯机构：
[Wang, QH ] B;[Chen, CS ] C;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Peoples R China.;Beijing Acad Agr & Forestry Sci, Beijing Res & Dev Ctr Grass & Environm, Beijing 100097, Peoples R China.
关键词：
Pesticide;Nanomaterials;Combined toxicity;Aquatic plant;Chlorophyll a fluorescence rise kinetics
摘要：
To evaluate combined effects of co-existed pesticides and nanomaterials on aquatic plants, the toxicity of herbicide atrazine (ATZ) on Iris pseudacorus in the presence and absence of Graphene oxide (GO) was investigated using chlorophyll a fluorescence transients. Results showed that GO reduced ATZ accumulation in plant. ATZ or ATZ combined with GO mainly blocked electron transport beyond QA at PSII as indicated by the sharp rise of the J-step level of fluorescence rise kinetics. The pronounced increase in Fm and the loss of I-step were observed when ATZ was at 2.0mg·L− 1 implying the damage on the oxygen evolution complex and PSI. GO at environmentally relevant concentration did not exhibit significant photosynthetic inhibitory effects on I. pseudacorus. GO at 1.0mg·L− 1 promoted photosynthesis of I. pseudacorus under ATZ stress at 2.0mg·L− 1. These result indicated that the presence of GO alleviated the photosynthesis inhibition by ATZ at high levels. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
语种：
英文
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碱铜联合改性珠状活性炭及其对甲苯的吸附机理
作者：
韩智广;刘寒冰;陈传胜;袁雪红;薛南冬
期刊：
环境科学研究 ,2021年34(11):2665-2673 ISSN：1001-6929
作者机构：
[韩智广] 中南林业科技大学环境科学与工程学院,湖南 长沙 410004;[韩智广] 生态环境部土壤与农业农村生态环境监管技术中心,北京 100012;[陈传胜] 中南林业科技大学;[薛南冬; 刘寒冰; 袁雪红] 生态环境部土壤与农业农村生态环境监管技术中心
关键词：
活性炭;碱铜联合改性;酸性官能团;甲苯
摘要：
为了提高活性炭吸附材料对非极性污染物的吸附性能,采用碱〔(NaOH溶液)联合铜(Cu(CH3COO) 2溶液〕对珠状活性炭(beaded active carbon,BAC)进行改性,利用BET、SEM、Boehm滴定和FT-IR对改性前后的活性炭进行表征,并采用动态吸附法和Yoon-Nelson吸附理论模型研究了不同改性方法对活性炭吸附甲苯穿透曲线、饱和吸附量的影响及吸附机理.结果表明:改性后BAC表面不规则的孔隙增多,比表面积和微孔容积减少,平均孔径变化不显著,表面Cu含量明显升高;不同浓度碱铜联合改性后BAC对甲苯的吸附性能均提高,当NaOH溶液浓度为8 mol/L、Cu(CH3COO) 2溶液质量分数为0.5%时,联合改性效果最好,此时改性后BAC对甲苯的饱和吸附量较改性前增加了50.9%,吸附穿透时间延长了342.9%,吸附平衡时间延长了77.4%.研究显示:较高浓度的碱联合较低浓度的铜溶液对活性炭改性,能显著提高吸附甲苯性能;改性后BAC对甲苯的吸附性能受自身孔隙结构和表面官能团的共同影响,且表面酸性官能团影响显著,表面金属铜与甲苯的结合作用是主要的吸附过程.
语种：
中文
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Influence of Cd on atrazine degradation and the formation of three primary metabolites in water under the combined pollution
作者：
Xie, Dongyu;Chen, Chuansheng* ;Li, Cui;Wang, Qinghai*
期刊：
Environmental Science and Pollution Research ,2021年28(13):16081-16091 ISSN：0944-1344
通讯作者：
Chen, Chuansheng;Wang, Qinghai
作者机构：
[Xie, Dongyu; Chen, Chuansheng] Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Peoples R China.;[Li, Cui; Xie, Dongyu; Wang, Qinghai] Beijing Acad Agr & Forestry Sci, Beijing Res & Dev Ctr Grass & Environm, Beijing 100097, Peoples R China.
通讯机构：
[Chen, Chuansheng] C;[Wang, Qinghai] B;Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Peoples R China.;Beijing Acad Agr & Forestry Sci, Beijing Res & Dev Ctr Grass & Environm, Beijing 100097, Peoples R China.
关键词：
Aquatic pollution;Atrazine;Cadmium;Combined pollution;Herbicide persistence
摘要：
To understand the influence of Cd on atrazine (ATZ) degradation in aqueous solution, the degradation of different initial levels of ATZ (0.1, 0.5, 1.0, and 2.0mg·L−1) was investigated in the presence and absence of Cd2+ in a 20-day laboratory experiment. It was found that Cd2+ caused a significant decrease in ATZ degradation and increased its half-life from 17–34days to 30–57days (p < 0.0001). Regarding the three most common metabolites of ATZ, deethylatrazine (DEA) and deisopropylatrazine (DIA) were detected in water earlier than hydroxyatrazine (HYA). The DEA content was several times higher than the DIA and HYA contents, regardless of the presence or absence of Cd2+. In the presence of Cd2+, the DIA content was significantly lower and the HYA content was significantly higher. Furthermore, Cd2+ had a dose-dependent effect on HYA formation. Our results indicated that the coexistence of Cd2+ and ATZ resulted in greater herbicide persistence, thereby possibly increasing the risk of environmental contamination. DEA was still the predominant ATZ degradation product detected in water under the combined pollution, which was similar to the ATZ tendency. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
语种：
英文
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“环境微生物学”分层次模块化教学探讨
作者：
杜露;龙艳玲;陈传胜;陈永华
期刊：
科技与创新 ,2021年(17):171-172,174 ISSN：2095-6835
作者机构：
中南林业科技大学环境科学与工程学院,湖南 长沙 410000;[陈传胜; 杜露; 陈永华; 龙艳玲] 中南林业科技大学
关键词：
“环境微生物学”;分层;模块;教学研究
摘要：
"环境微生物学"是一门由多门学科相互交叉、融合而成的课程,也是环境科学与工程专业必修课程,但学生学习微生物学的背景相对欠缺,学习效果参差不齐.针对教学过程中存在的问题,有机组合不同层次和不同模块,采取分层次模块化教学方式,根据学生个人想法将学生分为研究型和应用型,进行竞赛进而挖掘学生潜力,有效提升学生课堂积极性和学生自主创新能力.
语种：
中文
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黄菖蒲对阿特拉津胁迫的生理响应
作者：
夏凡;李翠;陈传胜;王庆海
期刊：
生态毒理学报 ,2020年15(05):255-263 ISSN：1673-5897
作者机构：
北京市农林科学院北京草业与环境研究发展中心,北京100097;中南林业科技大学环境科学与工程学院,长沙410004;[陈传胜] 中南林业科技大学;[李翠; 王庆海; 夏凡] 北京市农林科学院北京草业与环境研究发展中心
关键词：
阿特拉津;黄菖蒲;光合特性;防御酶
摘要：
化学除草剂阿特拉津通过阻碍电子传递抑制植物光合作用,其水体污染的生态毒性倍受关注。为揭示挺水植物对阿特拉津胁迫的生理响应规律,采用水培试验模拟不同浓度阿特拉津胁迫,测定黄菖蒲叶绿素荧光参数及叶片防御酶活性在抑菌和无抑菌条件下的变化,分析二者间的相关性。结果表明,不抑菌条件下,胁迫浓度≤4 mg·L~(-1)时,POD和PPO活性增强,随着胁迫强度加大活性下降,而SOD活性显著升高。PPO活性与多个叶绿素荧光参数、MDA含量显著相关。胁迫浓度≤1 mg·L~(-1)时,植物各叶绿素荧光参数均与对照组无显著差异;4 mg·L~(-1)时仍可维持正常水平的叶绿素含量和光合效率。这表明,阿特拉津胁迫下3种酶的协调作用提高了植物的适应能力,PPO活性可反映植物光合作用受抑制程度及受氧化损伤程度。黄菖蒲对阿特拉津的耐受水平可达到4 mg·L~(-1),微生物可以减轻阿特拉津的植物毒性,这可能归因于其能够促进阿特拉津降解。
语种：
中文
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热脱附对荧蒽污染土壤的修复效果及后续利用
作者：
罗诗和;陈灿;陈传胜;万勇;钟振宇;...
期刊：
环境科学与技术 ,2020年43(3):146-151 ISSN：1003-6504
作者机构：
中南林业科技大学环境科学与工程学院,湖南 长沙 410000;湖南省环境保护科学研究院,湖南 长沙 410000;生态环境部固体废物与化学品管理技术中心,北京 100029;[陈传胜; 罗诗和] 中南林业科技大学;[陈灿; 钟振宇; 万勇] 湖南省环境保护科学研究院
关键词：
热脱附;温度与时间;土壤形态与官能团;荧蒽;土壤肥力
摘要：
为探究热脱附参数对荧蒽去除效率的影响及热脱附后土壤后续利用类型,文章采用异位修复试验,将荧蒽污染土壤在不同温度(100~500 ℃)和不同处理时间(10~80 min)下进行热脱附处理,运用扫描电镜(SEM)和傅里叶红外光谱(FT-IR)对不同处理条件下的土壤进行性质表征,测定修复前后土壤理化性质。研究结果表明:土壤荧蒽去除率随温度(100~500 ℃)的增加而增加,但在300~ 500 ℃区间内去除率增幅较小。在300 ℃时荧蒽去除率已达80%。土壤荧蒽去除率在0~50 min内随热脱附时间的增大而增大,在50 min时热脱附反应平衡。综合土壤荧蒽去除率和能耗考量,选择300 ℃和50 min作为热脱附荧蒽适宜参数,此时土壤荧蒽去除率为96.3%。不同温度处理荧蒽土壤的FT-IR和SEM显示,与300 ℃处理相比,400~500 ℃处理后土壤微观形态被严重破坏,土壤板结化严重;500 ℃处理下土壤某一组分上官能团种类出现丢失。300~500 ℃热脱附处理土壤后,土壤中碱解氮、有机质和阳离子交换量含量随温度的升高而降低,相较原土壤降低43.5%~69.7%、63.4%~89.5%和78.3%~84.4%,但有效磷和速效钾含量升高20.4%~100.6%和256.1%~ 266.1%。研究表明,土壤热脱附是一种能有效去除荧蒽污染的土壤修复技术,但热脱附修复后的土壤肥力指标流失严重。
语种：
中文
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固相萃取-高效液相色谱法同时测定鸡粪中四环素类、喹诺酮类和磺胺类抗生素
作者：
余佩瑶;陈传胜;刘寒冰;邓艳玲;薛南冬
期刊：
色谱 ,2019年37(5):518-524 ISSN：1000-8713
通讯作者：
Chen, C.
作者机构：
[陈传胜] College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410000, China;[刘寒冰; 邓艳玲; 薛南冬] Institute of Soil and Solid Waste, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China;[余佩瑶] College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410000, China, Institute of Soil and Solid Waste, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
通讯机构：
[Chen, C.] C;College of Environmental Science and Engineering, China
关键词：
固相萃取;高效液相色谱;抗生素;畜禽粪便
摘要：
建立了一种高效、低成本的固相萃取-高效液相色谱(SPE-HPLC)同时测定鸡粪中6种常见抗生素(2种四环素类、2种喹诺酮类和2种磺胺类)的分析方法。样品经EDTA-McIlvaine缓冲液和有机混合提取液(甲醇-乙腈-丙酮,2∶2∶1,v/v/v)提取,过HLB固相萃取柱净化,甲醇-二氯甲烷(7∶3,v/v)洗脱,高效液相色谱-二极管阵列检测器测定,检测波长λ=270 nm,柱温32 ℃,流动相为乙腈-0.7%(v/v)磷酸水溶液。该方法在0.5~100 mg/L质量浓度范围内的标准曲线相关系数r~2在0.9999~1之间,样品加标回收率在70.0%~116.3%之间,相对标准偏差为1.2%~16.6%。方法检出限为1.3~6.7 μg/kg,定量限为3.5~9.2 μg/kg。应用该方法对辽宁省抚顺市某养鸡场当天的鸡粪进行检测,诺氟沙星和恩诺沙星(喹诺酮类)含量为未检出~9.23 mg/kg和1.57~7.69 mg/kg,磺胺二甲嘧啶(磺胺类)含量为2.02~13.05 mg/kg,磺胺甲恶唑、土霉素和四环素未测出。
语种：
中文
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坡耕地草篱系统中土壤阿特拉津残留的迁移规律
作者：
夏凡;陈传胜;李翠;陈超;何建荣;...
期刊：
水土保持学报 ,2018年32(5):47-52 ISSN：1009-2242
作者机构：
中南林业科技大学环境科学与工程学院, 长沙, 410004;北京市农林科学院北京草业与环境研究发展中心, 北京, 100097;中国林业科学研究院荒漠化研究所, 北京, 100091;[夏凡] 中南林业科技大学环境科学与工程学院, 长沙, 410004 北京市农林科学院北京草业与环境研究发展中心, 北京, 100097;[陈传胜] 中南林业科技大学环境科学与工程学院, 长沙, 410004
关键词：
阿特拉津;草篱系统;坡耕地;迁移
摘要：
为探索坡耕地中等高草篙对土壤阿特拉津残留迁移的影响,采用模拟降雨试验,研究华北地区不同坡度(15％和20％)条件下草篱系统中土壤阿特拉津残留迁移分布特征.结果表明:降雨后,土壤阿特拉津残留纵向迁移占主导地位.草篱处理篱带区阿特拉津残留量远低于无草篱对照的对应区域,篱带区各土层阿特拉津残留量相近,而无草篱对照残留量随土层深度增加而降低,且表层(0-10 cm)显著高于其他层.草篱系统中不同篱域土壤阿特拉津残留量差异显著,篱带区＜沉降区＜作物区.最优尺度回归分析结果表明,草篱系统中各因素对土壤阿特拉津残留量影响程度从大到小依次为草篱＞土层深度＞土壤含水量＞篱域＞坡度＞坡位,草篱的重要性超过其他因素.草篱显著影响坡耕地土壤阿特拉津的横向扩散和纵向迁移,可作为控制坡耕地农药流失的首选措施.
语种：
中文
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凹凸棒石及其改性材料对土壤镉生物有效性的影响与机制
作者：
陈展祥;陈传胜;陈卫平;焦文涛
期刊：
环境科学 ,2018年39(10):4744-4751 ISSN：0250-3301
通讯作者：
Jiao, Wen-Tao(wtjiao@rcees.ac.cn)
作者机构：
[陈展祥; 陈传胜] College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha;410004, China;[陈卫平; 焦文涛] State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing;100085, China;[陈展祥] 410004, China<&wdkj&>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing
关键词：
凹凸棒石;土壤;钝化修复;络合吸附;硅羟基;羧基
摘要：
采用室内盆栽实验和吸附平衡实验,研究了凹凸棒石及其改性材料对土壤镉移动性和生菜吸收镉的影响,并通过X射线衍射( XRD) 、傅里叶变换红外光谱( FTIR)以及X射线光电子能谱( XPS)探讨了其机制.结果表明,凹凸棒石及其改性材料均可显著降低生菜体内的Cd含量,改性材料作用优于未改性材料,分别使生菜地上部分Cd含量最大降低41.0%和56.5%.凹凸棒石及其改性材料在投加量为1%时均可显著降低土壤CaCl_2提取态Cd含量,最大降低幅度分别为34.2%和34.3%.凹凸棒石改性后对镉的饱和吸附容量明显提高.凹凸棒石主要是通过表面的硅羟基与Cd~(2 +)发生配位反应形成络合物来固定土壤镉,而改性凹凸棒石材料能够通过其表面的硅羟基和羧基与Cd~(2 +)发生配位反应形成络合物,从而降低Cd~(2 +)在土壤中的移动性,进而达到钝化修复Cd污染土壤的效果.因此凹凸棒石及其改性材料均可被用于镉污染农田土壤修复,但机制不同.
语种：
中文
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环境生物学创新型教学体系探讨
作者：
陈明利;陈传胜
期刊：
科教文汇(下旬刊) ,2015年(32):42-43 ISSN：1672-7894
作者机构：
中南林业科技大学环境科学与工程学院 湖南·长沙 410000;[陈传胜; 陈明利] 中南林业科技大学
关键词：
环境生物学;创新;教学内容;教学方法
摘要：
＂环境生物学＂是我校环境科学专业一门重要的专业课程,其理论概念以及研究方法对本专业中其他课程学习、将来学生就业以及深入的进行科研有着重要作用。本文针对环境生物学的特点,分析了目前教学过程中存在的问题,对教学内容的整合优化,教学方法的多样性,创新考核机制进行了探讨。
语种：
中文
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滑带土抗剪强度参数确定方法研究进展
作者：
陈传胜;张建敏
期刊：
中外公路 ,2012年32(6):65-70 ISSN：1671-2579
作者机构：
中南林业科技大学环境科学与工程研究所,湖南长沙,410004;[张建敏; 陈传胜] 中南林业科技大学
关键词：
滑坡;滑带土;抗剪强度参数;残余强度
摘要：
滑坡对工程建设的危害很大,常使交通中断,影响公路的正常运输。滑带土抗剪强度参数值的合理选定是正确进行滑坡工程分析和设计的关键。该文通过回顾国内外一些代表性工程,在综述了滑带土抗剪强度的5种特征强度及其相互关系的基础上,着重从滑带土抗剪强度参数的测试及估算方法上进行了分析,总结了各种方法的优缺点,并对取值方法中遇到的问题进行了探讨,旨在为选取滑坡抗剪强度参数提供新的思路及提高其取值精度提供一定的帮助。
语种：
中文
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基于有效垂直应力水平的滑带土强度参数适用性研究
作者：
陈传胜;张建敏;文仕知
期刊：
岩石力学与工程学报 ,2011年30(8):1705-1711 ISSN：1000-6915
通讯作者：
Chen, C.(ccs197@yahoo.com.cn)
作者机构：
[陈传胜; 张建敏; 文仕知] Institute of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China
通讯机构：
Institute of Environmental Science and Engineering, Central South University of Forestry and Technology, China
关键词：
边坡工程;复活型滑坡;残余强度;再生强度;环剪试验;稳定性分析
摘要：
滑带土强度参数的正确选取是滑坡稳定性评价和抗滑工程设计中的关键问题。在已有研究成果的基础上,以四川薛城镇滑坡为例,对其滑带土样进行固结–大位移环剪–再固结–再环剪的剪切试验,再现复活型滑坡滑带土的强度特性,提出基于不同有效垂直应力(滑动体覆盖厚度)采用相应的残余强度和再生强度参数的取值方法,并论证其合理性,对复活型滑坡滑面强度参数的合理取值具有极为重要的参考价值。
语种：
中文
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Failure Mechanism of Jinjiang Riverbank Based on Geotechnical Properties of Soil
作者：
Chen, Chuansheng* ;Wen, Shizhi
期刊：
Advanced Materials Research ,2011年261-263:1559-1562 ISSN：1022-6680
通讯作者：
Chen, Chuansheng
作者机构：
[Chen, Chuansheng] Cent S Univ Forestry & Technol, Inst Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Wen, Shizhi] Cent South Univ Forestry & Technol, Coll Forestry, Changsha 410004, Peoples R China.
通讯机构：
[Chen, Chuansheng] C;Cent S Univ Forestry & Technol, Inst Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.
会议名称：
International Conference on Civil Engineering and Building Materials (CEBM)
会议时间：
JUL 29-31, 2011
会议地点：
Kunming, PEOPLES R CHINA
会议主办单位：
[Chen, Chuansheng] Cent S Univ Forestry & Technol, Inst Environm Sci & Engn, Changsha 410004, Hunan, Peoples R China.^[Wen, Shizhi] Cent South Univ Forestry & Technol, Coll Forestry, Changsha 410004, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Geotechnical properties;Jinjiang riverbank;Tension crack;Toppling
摘要：
In this paper, concerning the geotechnical properties and erosion circumstances of Jinjiang riverbank of Yangtze River, field on-site investigation and soil laboratory tests were conducted. Study results reveal that the soil of Jinjiang riverbank contains mostly the silt particles with 24% of clay content, the unconfined compressive strength of the soil decreases rapidly and permeability have a significant increase with the small change in water content, which are considered to be primary factors of occurrence of riverbank collapse when flooding occur. In addition, it is cleared that collapse process of riverbank are mainly due to the formation of tension crack and toppling behind the bank face.
语种：
英文
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生态文明城市建设中湿地生态工程构建模式研究
作者：
陈传胜;尹育知;吴琼
期刊：
北方园艺 ,2011年(18):118-121 ISSN：1001-0009
作者机构：
中南林业科技大学林学院环境科学与工程研究所
关键词：
湿地生态工程;两型社会;生态文明;模式
摘要：
湿地生态工程是生态文明城市建设不可缺少的内容之一,对推进我国生态文明城市建设和发展具有重要的现实意义。以长株潭"两型"社会建设的样板区长沙市为例,对湿地生态工程在生态文明城市建设中面临的主要问题进行分析基础上,提出了湿地生态工程的基本思路、原则,并构建了湿地生态工程基本模式,旨在为我国生态文明城市建设规划的编制提供科学依据和决策参考。
语种：
中文
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Study on the Mechanical Properties of Discontinuity under Shearing
作者：
Chen, Chuansheng;Wen, Shizhi
期刊：
Advanced Materials Research ,2011年243-249:3043-3049 ISSN：1022-6680
通讯作者：
Chen, C.(ccs197@yahoo.com.cn)
作者机构：
[Chen, Chuansheng] Institute of Environmental Science and Engineering, Central South University of Forestry and Technology, Shao Shan South Road, Chang Sha, 410004, China;[Chen, Chuansheng; Wen, Shizhi] College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China
通讯机构：
[Chen, C.] I;Institute of Environmental Science and Engineering, Shao Shan South Road, Chang Sha, 410004, China
会议名称：
1st International Conference on Civil Engineering, Architecture and Building Materials, CEABM 2011
会议时间：
18 June 2011 through 20 June 2011
关键词：
Characteristics of strength;Discontinuity;Roughness;Shear stiffness
摘要：
The mechanical properties of discontinuity are different from those of a whole rock. And the shear strength of discontinuity is closely related to its morphological characteristics. The study of the mechanism of failure of jointed rock mass under shear stress is to reveal its mechanical behavior and its mechanism of failure. This paper presents a fundamental research in the mechanical properties of the regular jugged discontinuity under various normal stresses in the shear test. And it describes the mechanical properties of the regular jugged discontinuity under shear stress and their principal regularities. The strength and roughness of discontinuity under shear stress are investigated by the analysis of the data obtained. And this paper study the calculation of shear stiffness of discontinuity and proposed an empirical formula between the slope ratio and roughness coefficient of discontinuity. Also the changing regularity of the parameters of the shear strength of discontinuity under shear stress is investigated, and an empirical formula is developed to evaluate the shear strength of discontinuity in this paper. ©(2011) Trans Tech Publications.
语种：
英文
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