|
|
|
| Photodegradation of cis-configuration neonicotinoid cycloxaprid in water |
| DENG Ya-yun1, ZHUANG Ying-ying1, FENG Yue1, LU Si-yuan1, CHENG Jia-gao1, XU Xiao-yong1,2 |
1. Shanghai Key Lab of Chemistry Biology, Institute of Pesticides and Pharmaceuticals, East China University of Science and Technology, Shanghai 200237, China;
2. Shanghai Collaborative Innovation Center for Biomanufacturing Technology, Shanghai 200237, China |
|
|
|
|
Abstract In order to correctly evaluate the environmental risk of the new insecticide CYC, the influence of the CYC initial concentration, temperature, initial pH, concentration of hydrogen peroxide and nitrate on the CYC photodegradation in water were studied. The results show that the photodegradation of cycloxaprid was fitted to pseudo-first-order kinetics reaction. For direct photodegradation, cycloxaprid photolysis rate was accelerated with the decreasing of CYC concentration and the increase of temperature. The activation energy of photochemical reaction was 21.27kJ/mol. By measuring the CYC pKa value of 3.42 and simulation CYC reactivity of different forms of light particles, known the complicated influence of pH value on CYC photolysis:In the acidic conditions, the degradation rate of cycloxaprid depended on the different cycloxaprid forms(cations and neutral particles) and their singlet energy values. While, in the alkaline condition, the photodegradation rate was mainly affected by the number of hydroxyl radicals in the solution. For CYC indirect photodegradation, nitrate and hydrogen peroxide were confirmed to promote the role. When evaluating the environmental risk of CYC should comprehensively consider the effect of environmental factors on its degradation.
|
|
Received: 12 September 2015
|
|
|
|
|
|
| [1] |
?ernigoj U, Štangar U L, Trebše P. Degradation of neonicoticotinoid insecticides by different advanced oxidation processes and studying the effect of ozone on TiO2 photocatalysis[J]. Appl. Catal. B:Environ., 2007,75(3/4):229-238.
|
| [2] |
Nauen R, Bretschneider T. New modes of action of insecticides[J]. Pestic. Outlook, 2002,13:241-245.
|
| [3] |
Jeschke P, Nauen R, Schindler M, et al. Overview of the status and global strategy for noenicotinoids[J]. J. Agric. Food Chem. 2011,59(7):2897-2908.
|
| [4] |
Dell' Arciprete M L, Santos-Juanes L, Sanz A A, et al. Reactivity of hydroxyl radicals with neonicotinoid insecticedes:mechanism and changes in toxicity[J]. Photochem. Photobiol. Sci., 2009,8:1016-1023.
|
| [5] |
Wamhoff H, Schneider V. Photodegradation of imidacloprid[J]. J. Agric. Food Chem. 1999,47(4):1730-1734.
|
| [6] |
Peña A, Rodríguez-Liébana J A, Mingorance M D. Persistence of two neonicotinoid insecticides in wastewater, and in aqueous solutions of surfactants and dissolved organic matter[J]. Chemosphere, 2011,84(4):464-470.
|
| [7] |
Shao X S, Fu H, Xu X Y, et al. Divalent and oxabridged neonicotinoids constructed by dialdehydes and nitromethylene analogues of imidacloprid:Design, Synthesis, Crystal structure, and Insecticidal Activities[J]. J. Agric. Food Chem., 2010,58(5):2696-2702.
|
| [8] |
Liu X Q, Xu X Y, Li C, et al. Degradation of chiral neonicotinoid insecticide cycloxaprid in flooded and anoxic soil[J]. Chemosphere. 2015,119:334-341.
|
| [9] |
Orellana-García F, Álvarez M A, López-Ramón V, et al. Photodegradation of herbicides with different chemical natures in aqueous solution by ultraviolet radiation. Effects of operational variables and solution chemistry[J]. Chem. Eng. J. 2014,255:307-315.
|
| [10] |
Kim M K, Zoh K D. Effects of natural water constituents on the photo-decomposition of methylmercury and the role of hydroxyl radical[J]. Sci. Total Environ., 2013,449:95-101.
|
| [11] |
Shephard G S, StockenstrÖm S, de Villiers D, et al. Degradation of microcystin toxins in a falling film photocatalytic reactor with immobilizied titanium dioxide catalyst[J]. Water Res., 2002,36(1):140-146.
|
| [12] |
Vione D, Maurino V, Minero C, et al. Phenol photonitration upon UV irradiation of nitrite in aqueous solution Ⅱ:effects of pH and TiO2[J]. Chemosphere, 2001,45(6/7):903-910.
|
| [13] |
Xu D X, Yuan F, Gao Y X, et al. Influence of pH, metal chelator, free radical scavenger and interfacial characteristics on the oxidative stability of β-carotene in conjugated whey protein-pectin stabilized emulsion[J]. Food chem., 2013,139(1-4):1098-1104.
|
| [14] |
阳海,周硕林,尹明亮,等.克百威光催化降解动力学的研究[J]. 中国环境科学, 2013,33(1):82-87.
|
| [15] |
Bagal M V, Gogate P R. Degradation of 2, 4-dinitrophenol using a combination of hydrodynamic cavitation, chemical and advanced oxidation processes[J]. Ultrason. Sonochem., 2013, 20(5):1226-1235.
|
| [16] |
Zhou L, Ji YF, Zeng C, et al. Aquatic photodegradation of sunscreen agent p-aminobenzoic acid in the presence of dissolved organic matter[J]. Water Res., 2013,47(1):153-162.
|
| [17] |
Benitez F J, Acero J L, Real F J, et al. Photolysis of model emerging contaminants in ultra-pure water:kinerics, by-products formation and degradation pahyways[J]. Water Res., 2013,47(2):870-880.
|
| [18] |
Buxton G V, Greenstock C L, Helman W P, et al. Critical review of rate constants for reactions of hydrated eleutrons, hydrogen atoms and hydroxyl radicals(·OH/·O-) in aqueous solution[J]. J. Phys. Chem. Ref. Data., 1988,17(2):513-886.
|
| [19] |
Xu L J, Chu W, Graham N. Sonophotolytic degradation of dimethyl phthalate without catalyst:Analysis of the synergistic effect and modeling[J]. Water. Res., 2013,47(6):1996-2004.
|
| [20] |
Abdullah F H, Rauf M A, Ashraf S S. Photolytic oxidation of Safranin-O with H2O2[J]. Dyes. Pigm., 2007,72(3):349-352.
|
| [21] |
Devi L G, Kumar S G, Reddy K M, et al. Photodegradation of methyl orange an azo dye by advanced Fenton process using zero valent metallic iron:influence of various reaction parameters and its degradation mechanism[J]. J. Hazard. Mater., 2009,164(2/3):459-467.
|
| [22] |
dos Santos W N L, Brandão G C, Portugal L A, et al. A photo-oxidation procedure using UV radation/H2O2 for decomposition of wine samples-Determination of iron and manganese content by flame atomic absorption spectrometry[J]. Spectrochim. Acta, Part B. 2009,64(6):601-604.
|
| [23] |
Poulopoulos S G, Arvantitakis F, Philippopolos C J. Photochemical treatment of phenol aqueous solutions using ultraviolet radiation and hydrogen peroxide[J]. J. Hazard. Mater., 2006,129(1-3):64-68.
|
| [24] |
马晓雁,倪梦婷,倪永炯,等.UV体系中3种微量类固醇雌激素的竞争降解及同趋转化[J]. 中国环境科学, 2014,34(4):904-911.
|
| [25] |
Aleboyeh A, Moussa Y, Aleboyeh H. Kinetics of oxidative decolourisation of Acid Orange 7in water by ultraviolet radiation in the presence of hydrogen peroxide[J]. Sep. Purif. Technol., 2005,43(2):143-148.
|
| [26] |
Sarla M, Pandit M, Tyagi D K, et al. Oxidation of cyanide in aqueous solution by chemical and photochemical process[J]. J. Hazard. Mater., 2004,116(1/2):49-56.
|
| [27] |
Evgenidou E, Konstantinou I, Fytianos K, et al. Oxidation of two organophosphorous insecticides by the photo-assisted Fenton reaction[J]. Water Res., 2007,41(9):2015-2027.
|
| [28] |
El-Sheikh M A, Ramadan M A, El-Shafie A. Photo-oxidation of rice starch. Part I:Using hydrogen peroxide[J]. Carbohydr. Polym., 2010,80(1):266-269.
|
| [29] |
Zuo Y G, Wang C J, Van T. Simultaneous determination of nitrite and nitrate in dew, rain, snow and lake water samples by ion-pair high-performance liquid chromatography[J]. Talanta, 2006, 70(2):281-285.
|
| [30] |
Zepp R G, Hoigne J, Bader H. Nitrate-induced photooxidation of trace organic chemicals in water[J]. Environ. Sci. Technol., 1987, 21(5):443-450.
|
| [31] |
Brezonik P L, Fulkerson-Brekken J. Nitrate-induced photolysis in natural waters:controls on concentrations of hydroxyl radical photo-intermediate by natural scavenging agents[J]. Environ. Sci. Technol., 1998,32(19):3004-3010.
|
| [32] |
展漫军,杨曦,鲜啟鸣,等.双酚A在硝酸根溶液中的光解研究[J]. 中国环境科学, 2005,25(4):487-490.
|
| [33] |
Warneck P, Wurzinger C. Product quantum yields for the 305-nm photodegradation of nitrate in aqueous solution[J]. J. Phys. Chem., 1988,92(22):6278-6283.
|
|
|
|
