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Journal of Environmental Sciences 2008年第4期20卷 464-469页

作者： CHU Xiaoqiang FANG Hua PAN Xuedong WANG Xiao SHAN Min FENG Bo YU Yunlong Department of Plant Protection College of Agriculture and Biotechnology Zhejiang University Hangzhou 310029 China

In practice, pesticides are usually applied simultaneously or one after another for crop protection, and this type of pesticide application often leads to a combined contamination of pesticide residues in the soil environment. A laboratory study was conducted to investigate the influence of chlorothalonil on chlorpyrifos degradation and its effects on soil bacterial, fungal, and actinomycete populations. Under the experimental conditions here, the half-lives of chlorpyrifos alone, and in combination with chlorothalonil, at the recommended and double dosages, were measured to be 3.24, 2.77, and 2.63 d, respectively. Chlorpyrifos degradation was not significantly altered by its combination with chlorothalonil. However, the inhibitory effect of chlorpyrifos on soil microorganisms was increased by its combination with chlorothalonil, and the increase was related to the levels of chlorothalonil added. Compared to those in the controls, the populations of bacteria, fungi, and actinomycetes were significantly reduced by 44.1%, 61.1%, and 72.8%, respectively, on the first day after treatment （DAT） by chlorpyrifos alone. With the addition of chlorothalonil, the inhibition was increased to 55.2%, 79.3%, and 85,8% at the recommended dosage, and 86.0%, 94.1%, and 90.8% at the double dosage, at one DAT, respectively. The results suggested that combined effects should be taken into account to assess the actual impacts of pesticide applications.

关键词： pesticide soil microorganism chlorpyrifos chlorothalonil combination

Effects of three pesticides on the growth,photosynthesis and photoinhibition of the edible cyanobacterium Ge-Xian-Mi（Nostoc）

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Effects of three pesticides on the growth,photosynthesis and...

China Needs to Store More pesticides in Slack Seasons

中国海洋湖沼学会藻类学分会第七届会员大会暨第十四次学术...

作者： Philippe Juneau Département des Sciences Biologiques-TOXEN Canada Research Chair on Ecotoxicology of Aquatic MicroorganismsUniversité du Québec à MontréalSuccursale Centre-villeC.P.8888 MontréalQuébecCanada H3C 3P8

＜正＞Effects of butachlor,bensuifuron-methyl and dimethoate on the growth,photosynthesis and photoinhibition of the edible cyanobacterium Ge-Xian-Mi were examined in order to gain insight into the relationship between its productivity reduction and the abusive use of pesticides in the *** inhibition of growth was found in the presence of 4-6 fold field concentration of butachlor and very high concentrations of bensulfuron-methyl and *** stimulation of photosynthesis was observed over a limited range of low concentrations of these three *** found that PSII and PSI were respectively the inhibitory sites of 150 μM butachlor and 150 μM ***,the inhibitory site of 2000 μM dimethoate seems to be situated at the terminal of whole chain or dark *** colonies exposed to 150 μM butachlor were more sensitive to high light than the control cells and those exposed to bensulfuron-methyl,dimethoate or low butachlor *** light induced rapid recovery of photoinhibited colonies was observed for the control,10 μM butachlor,bensulfuron-methyl and dimethoate ***, the maximal PSII photochemical efficiency of photoinhibited colonies treated with 150 μM butachlor was maintained at a relatively stable value in low *** findings suggested that the abusive utilization of butachlor might be an important factor limiting the productivity of Ge-Xian-Mi in the field.

关键词： Cyanobacterium Growth Paddy field pesticide Photoinhibition Photosynthesis

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China Chemical Reporter 2008年第28期19卷 35-35页

pesticide producers,major pesticide sup-ply and marketing companies,plant pro-tection companies and individual dealers have taken"zero inventory"as a tactic to maximize profit in recent *** na-tional advantage of storing pesticides in slack seasons is weakened and inventory is very much on the low *** is a major agricultural country and also a country with a high incidence of plant diseases and *** lice in rice,boll-

关键词： pesticide companies inventory profit marketing Sto

Bioaccumulation and the expression of hepatic cytochrome P450 genes in marine medaka(Oryzias melastigma)exposed to difenoconazole

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Journal of Environmental Sciences 2017年第2期29卷 98-104页

作者： Lemeng Zhang Xiaocui Dong Chonggang Wang Zhenghong Zuo Meng Chen Key Laboratory of Ministry of Education for Subtropical Wetland Ecosystem Research Xiamen UniversityXiamen 361102China State Key Laboratory of Marine Environmental Science Xiamen UniversityXiamen 361102China

This study was conducted to assess the effects of difenoconazole（DFZ）, a triazole fungicide,on the hepatic biotransformation system and its bioaccumulation in marine medaka（Oryzias melastigma）. Fish were exposed to DFZ（1, 10, 100, 1000 ng/L） for 180 days. The results showed that：（1） The m RNA levels of hepatic CYP1A1, CYP1 B, CYP1C1, CYP27 B and CYP3A40 were up-regulated, but those of CYP3A38 and CYP27A1 were down-regulated.（2） The activity of ethoxyresorufin-O-deethylase（EROD） and the content of reduced glutathione（GSH） in the liver were increased in the DFZ-treated groups, and glutathione S-transferase（GST） activity was increased in the 100 and 1000 ng/L groups.（3） DFZ was accumulated in the muscle and the biological concentration factors in the 10, 100, and1000 ng/L groups were respectively 149, 81 and 25. These results suggested that long-term exposure to DFZ at low concentrations would result in a bioaccumulation of this compound and disturb the biotransformation system.

关键词： pesticide Difenoconazole Biotransformation system Marine fish

Green synthesis of multifunctional carbon dots for anti-cancer and anti-fungal applications

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Chinese Journal of Chemical Engineering 2021年第9期34卷 97-104页

作者： Shaojing Zhao Li Huang Yong Xie Bin Wang Feng Wang Minhuan Lan Hunan Provincial Key Laboratory of Micro&Nano Materials Interface Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China State Key Laboratory of the Discovery and Development of Novel pesticide Shenyang Sinochem Agrochemicals R&D Co.Ltd.Shenyang 110021China Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education Hubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Carbon dots(CDs)have become popular nanomaterials in biomedical and agricultural *** we synthesized multifunctional CDs which showed anti-cancer and anti-fungal *** low cytotoxicity,stable fluorescence and high photothermal conversion efficiency enable the CDs with imagingguided photothermal *** CDs also exhibited intrinsic anti-fungal activity even at a low concentration,i.e.,40 mg·L^(-1) of CDs induced 20%mortality in cucumber downy ***,the largeπ-conjugated nanostructure and the richness of amino and hydroxyl groups make them a powerful delivery platform for flumorph(a fungicide)with a high loading efficiency of 47.18%.Meanwhile,the heat converted from the light can accelerate the release of flumorph from CDs,and thus efficiently kill fungus.

关键词： Carbon dots Photothermal therapy Anti-fungus Delivery pesticide

Effects of three pesticides on the growth,photosynthesis and photoinhibition of the edible cyanobacterium Ge-Xian-Mi (Nostoc)

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Effects of three pesticides on the growth,photosynthesis and...

Tracking of pesticides on/inside vegetable leaves by in situ SERS imaging

湖北省植物生理学会第十五次学术研讨会

Effects of butachlor,bensulfuron-methyl and dimethoate on the growth,photosynthesis and photoinhibition of the edible cyanobacterium Ge-Xian-Mi were examined in order to gain insight into the relationship between its ... 详细信息

关键词： Cyanobacterium Growth Paddy field pesticide Photoinhibition Photosynthesis

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Tracking of pesticides on/inside vegetable leaves by in situ...

Statistical Monitoring Method for pesticides and Harmful Substances

第二十届全国光散射学术会议（CNCLS20）

作者： Feng Wang Huichao Fang Haifeng Yang Department of Chemistry Shanghai Normal University

pesticide residues are harmful to human ***,most present techniques that can be used for the detection and identification of pesticides are time consuming,and cannot be adopt for in situ and real time *** this study,we applied in situ SERS technique to detect and discriminate pesticides on/inside vegetable leaves in a rapid,sensitive *** suspension was dropped onto vegetable *** with a diameter of 40 nm can penetrate as deep as 300 μm after 12 *** was then applied on vegetable leaves pre-penetrated with AuNPs（Figure 1）,Z-stack SERS imaging results proved the feasibility of in situ SERS imaging technique for pesticide penetration *** situ SERS imaging was then applied to study the pesticide removing effect of different washing reagents on/inside vegetable leavess（Figure 2）.

关键词： SERS in situ imaging pesticide vegetable leaves

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中国农业科技导报 1999年第1期1卷 71-73页

作者： Han Huaqiong Li Weige(China National Centre for Quality Supervision and Test of Feed Beijing 100081 P. R of China)

A statistical monitoring method has been developedfor accurate, safety surveillance methods of γ-BHC resideueor harmful substances in foods or feeds. It is very importantfor safety monitoring and arbitrament inspections. This paperintroduces a calculation formula by a six-point calibrationmethod and an example for detection of Y-BHC in *** method can guarantee the accuracy of the results,and it does very substantially reduce the probability of an er-ror by one-point calibration.

关键词： Statistical monitoring method pesticide residueγ-BHC Harmful substances The statisticalexample Six-point calibration Single-pointcalibration

Effect of an eco-friendly o/w emulsion stabilized with amphiphilic sodium alginate derivatives on lambda-cyhalothrin adsorption-desorption on natural soil minerals

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Journal of Environmental Sciences 2019年第4期31卷 230-238页

作者： Yang Peng Dunchao Xiao Gaobo Yu Yuhong Feng Jiacheng Li Xinyu Zhao Yiyuan Tang Longzheng Wang Quan Zhang Hainan University Key Laboratory of Advanced Materials of Tropical Island Resources Ministry of EducationCollege of Materials and Chemical EngineeringHainan University

The effects of amphiphilic O/W emulsions,stabilized by the alkyl polyglycoside(APG)or cholesterol-grafted sodium alginate(CSAD)/APG systems,on lambda-cyhalothrin adsorption/desorption mechanisms on natural soil minerals(i.e.,illite and kaolinite)were *** and desorption of lambda-cyhalothrin onto soil minerals was studied via batch equilibration to give insight into the adsorption equilibrium,kinetics,and thermodynamics of lambda-cyhalothrin adsorption onto *** results indicate the following:(i)The adsorption processes for the APG system and CSAD/APG system include:rapid adsorption,slow adsorption,and adsorption *** adsorption kinetics of pesticide on illite and kaolinite are in accordance with the Ho and McKay model,and the adsorption isotherm conforms to the Freundlich *** addition,the adsorption processes of pesticide for the two systems on minerals were spontaneous and feasible(ΔG^00),and mainly involved chemical bonding(ΔH^0>60).(ii)The equilibrium adsorption percentages of the pesticide on illite for the APG system and CSAD/APG system were 42.4%and 64.8%,and the corresponding equilibrium adsorption percentages on kaolinite were 40.8%and 61.8%,***,the pesticide adsorption rate K_(2-CSAD/APG)was faster than K_(2-APG),and its adsorption capacity K_(f-CSAD/APG )was greater than K_(f-APG).Meanwhile,the pesticide desorption K_(fd)in the CSAD/APG system was smaller than that in the APG *** a result,this eco-friendly O/W emulsion based on amphiphilic sodium alginate derivatives might provide a green pesticide formulation,since it could reduce the amount of lambda-cyhalothrin entering aquatic systems to threaten non-target fish and invertebrate species.

关键词： Sodium alginate derivatives Alkyl polyglycoside Synergetic effect Green pesticide Water pollution remediation Lambda-cyhalothrin

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有机质谱在食品农残分析研究中的应用

分析测试学报 2008年第S1期27卷 187-189页

作者：黎路黄晓晶上海舜宇恒平科学仪器有限公司上海200233

The application of organic mass spectrometry on pesticides residues analysis was *** to the characteristics of pesticides residues,sample separation could be performed by GC or *** analytical characteristics of organi... 详细信息

关键词： pesticide residues food mass spectrometry review