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1. Revealing the biodiversity and the response of pathogen to a combined use of procymidone and thiamethoxam in tomatoes

Author:
Lin, Shaohua; Han, Yingyan; Jiangyuan, Chunzi; Luo, Yunbo; Xu, Wentao; Luo, Hongxia; Pang, Guofang
Source:
Food chemistry 2019 v.284 pp. 73-79
ISSN:
0308-8146
Subject:
thiamethoxam,   etc   ; Bacteroidetes; Cyanobacteria; Proteobacteria; biodiversity; half life; maximum residue limits; monitoring; pathogens; procymidone; tomatoes;     Show all 11 Subjects
Abstract:
... The dissipation kinetics of a combined use of procymidone and thiamethoxam, and their impact on the biodiversity and pathogen on surface of tomatoes were studied. The half-lives of procymidone and thiamethoxam, used either on their own or in combination with each other, were 2.94 or 3.26 days and 2.41 or 2.67 days, respectively. The residues dropped below the maximum residue limit (MRL) after 7 or ...
DOI:
10.1016/j.foodchem.2019.01.094

2. Evaluation of the impact of matrix effects in LC/MS measurement on the accurate quantification of neonicotinoid pesticides in food by isotope-dilution mass spectrometry

Author:
Nakamura, Keisuke; Otake, Takamitsu; Hanari, Nobuyasu; Takatsu, Akiko
Source:
Journal of environmental science and health 2019 v.54 no.6 pp. 467-474
ISSN:
1532-4109
Subject:
thiamethoxam,   etc   ; acetamiprid; brown rice; calibration; carrots; clothianidin; dinotefuran; green onions; imidacloprid; isotope labeling; mass spectrometry; thiacloprid;     Show all 12 Subjects
Abstract:
... The use of isotope-labeled internal standards is the most widely accepted approach to overcome the matrix effects on quantification of pesticides in food by LC/MS. We evaluated the impact of the matrix effects on quantification of six neonicotinoid pesticides, acetamiprid, clothianidin, dinotefuran, imidacloprid, thiacloprid, and thiamethoxam, in food by using deuterated internal standards. The ca ...
DOI:
10.1080/03601234.2019.1607134

3. Adsorption and Desorption of Carbendazim and Thiamethoxam in Five Different Agricultural Soils

Author:
Han, Lingxi; Ge, Qiqing; Mei, Jiajia; Cui, Yanli; Xue, Yongfei; Yu, Yunlong; Fang, Hua
Source:
Bulletin of environmental contamination and toxicology 2019 v.102 no.4 pp. 550-554
ISSN:
0007-4861
Subject:
thiamethoxam,   etc   ; adsorption; agricultural soils; carbendazim; cation exchange capacity; desorption; hysteresis; soil organic matter; sorption isotherms;     Show all 9 Subjects
Abstract:
... The adsorption and desorption behaviors of carbendazim (CBD) and thiamethoxam (TMX) were systematically studied in five different agricultural soils. The adsorption and desorption isotherms of CBD and TMX in the five different soils were fitted well by the Freundlich model. The Freundlich adsorption coefficient (Kfᵃᵈˢ) and Freundlich desorption coefficient (Kfᵈᵉˢ) of CBD in the five different soil ...
DOI:
10.1007/s00128-019-02568-3

4. Contamination of the guttation liquid of two common weeds with neonicotinoids from coated maize seeds planted in close proximity

Author:
Mörtl, Mária; Darvas, Béla; Vehovszky, Ágnes; Győri, János; Székács, András
Source:
The Science of the total environment 2019 v.649 pp. 1137-1143
ISSN:
0048-9697
Subject:
thiamethoxam,   etc   ; Cirsium arvense; Papaver rhoeas; clothianidin; corn; cross contamination; guttation; liquids; models; planting; seeds; soil; weeds;     Show all 13 Subjects
Abstract:
... Neonicotinoid uptake by maize plants emerged from coated seeds and by two common weeds grown in close proximity to coated seeds has been studied. Uptake of thiamethoxam (TMX) and clothianidin (CLO) have been characterized via guttation liquid measurements. The creeping thistle (Cirsium arvense), a well-known maize weed, as well as red poppy or Flanders poppy (Papaver rhoeas) were chosen as model s ...
DOI:
10.1016/j.scitotenv.2018.08.271

5. The route and rate of thiamethoxam soil degradation in laboratory and outdoor incubated tests, and field studies following seed treatments or spray application

Author:
Hilton, Martin J; Emburey, Simon N; Edwards, Paul A; Dougan, Christine; Ricketts, Dean C
Source:
Pest management science 2019 v.75 no.1 pp. 63-78
ISSN:
1526-498X
Subject:
thiamethoxam,   etc   ; clothianidin; field experimentation; seed treatment; soil degradation; soil pore water; soil treatment;     Show all 7 Subjects
Abstract:
... BACKGROUND: The route and rate of degradation of thiamethoxam in the laboratory and field was investigated. The effect of dark incubation versus light/dark cycles, seed treatment versus spray, and watering‐in for spray application was explored in side‐by‐side trials. RESULTS: Geometric mean DT₅₀ values were 75.4 days in OECD307 studies, and 18.3 (spray) and 16.5 (seed treatment) days in the field. ...
DOI:
10.1002/ps.5168

6. Simultaneous determination of thiamethoxam and its metabolite clothianidin by LC-MS/MS in goji berry and soil

Author:
Li, Wei; Shen, Shuo; Chen, Hongyu; Guo, Qingyun
Source:
International journal of environmental analytical chemistry 2019 v.99 no.8 pp. 767-775
ISSN:
1029-0397
Subject:
thiamethoxam,   etc   ; Lycium; clothianidin; detection limit; dinotefuran; ecosystems; half life; liquid chromatography; metabolites; soil; standard deviation; tandem mass spectrometry; China;     Show all 13 Subjects
Abstract:
... In this study, an effective analytical method for simultaneous determination of thiamethoxam and its metabolite clothianidin in goji berry and soil was developed by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The recoveries of the compounds in goji berry and soil at the levels of 0.005, 0.02, and 0.1 μg kg⁻¹ were 84.7–98.9% and the relative standard deviations (RSDs) were 0.9–3.2%. ...
DOI:
10.1080/03067319.2019.1609463

7. The impact of four widely used neonicotinoid insecticides on Tetragonisca angustula (Latreille) (Hymenoptera: Apidae)

Author:
Jacob, Cynthia Renata de Oliveira; Zanardi, Odimar Zanuzo; Malaquias, José Bruno; Souza Silva, Carina Aparecida; Yamamoto, Pedro Takao
Source:
Chemosphere 2019 v.224 pp. 65-70
ISSN:
0045-6535
Subject:
thiamethoxam,   etc   ; Tetragonisca angustula; acetamiprid; agroecosystems; crops; imidacloprid; lethal concentration 50; locomotion; mortality; pests; pollination; pollinators; stingless bees; thiacloprid;     Show all 14 Subjects
Abstract:
... Application of neonicotinoid insecticides on crops can reduce the pollination services and population levels of the stingless bee Tetragonisca angustula (Latreille) (Hymenoptera: Apidae) in Neotropical agroecosystems. However, the impact of these insecticides on this bee has not been fully investigated. This study assessed the susceptibility levels of T. angustula to four neonicotinoid insecticide ...
DOI:
10.1016/j.chemosphere.2019.02.105

8. Determination of the residue dynamics and dietary risk of thiamethoxam and its metabolite clothianidin in citrus and soil by LC-MS/MS

Author:
Gui, Ting; Jia, Gui F.; Xu, Jin; Ge, Shi J.; Long, Xiao F.; Zhang, Yu P.; Hu, De Y.
Source:
Journal of environmental science and health 2019 v.54 no.4 pp. 326-335
ISSN:
1532-4109
Subject:
thiamethoxam,   etc   ; Citrus; acetonitrile; clothianidin; half life; kinetics; liquid chromatography; metabolites; pulp; risk; soil; soil sampling; standard deviation; tandem mass spectrometry;     Show all 14 Subjects
Abstract:
... A modified quick, easy, cheap, effective, rugged and safe (QuEChERS) method was developed for the determination of thiamethoxam and its metabolite clothianidin in citrus (including the whole citrus, peel and pulp) and soil samples by liquid chromatography-tandem mass spectrometry. The sample was extracted with acetonitrile and purified with octadecylsilane. The detection limits of both compounds w ...
DOI:
10.1080/03601234.2019.1571361

9. Distribution and Concentration of Neonicotinoid Insecticides on Waterfowl Production Areas in West Central Minnesota

Author:
Williams, Nate; Sweetman, Jon
Source:
Wetlands 2019 v.39 no.2 pp. 311-319
ISSN:
0277-5212
Subject:
thiamethoxam,   etc   ; U.S. Fish and Wildlife Service; clothianidin; conservation buffers; highlands; imidacloprid; risk; surface water; waterfowl; wetlands; Minnesota; Prairie Pothole region;     Show all 12 Subjects
Abstract:
... Neonicotinoid insecticides have been reported to occur widely in surface waters, including those of wetlands within the Prairie Pothole Region (PPR). In the US portion of the PPR, the US Fish and Wildlife Service has established Waterfowl Production Areas (WPAs) in an effort to enhance waterfowl production. Most WPAs have an area of protected upland surrounding wetlands that can act as a buffer to ...
DOI:
10.1007/s13157-018-1090-x

10. Sublethal and transgenerational effects of thiamethoxam on the demographic fitness and predation performance of the seven-spot ladybeetle Coccinella septempunctata L. (Coleoptera: Coccinellidae)

Author:
Jiang, Jiangong; Zhang, Zhengqun; Yu, Xin; Yu, Caihong; Liu, Feng; Mu, Wei
Source:
Chemosphere 2019 v.216 pp. 168-178
ISSN:
0045-6535
Subject:
thiamethoxam,   etc   ; Coccinella septempunctata; adults; aphidophagous predators; fecundity; integrated pest management; larvae; longevity; natural enemies; oviposition; parents; predation; progeny;     Show all 13 Subjects
Abstract:
... Seven-spot ladybird beetles, Coccinella septempunctata L., are critical aphidophagous predators in the agricultural environment. Thiamethoxam, a neonicotinoid insecticide, is commonly used for controlling pests but impairs their natural enemies at the same time. To improve effective IPM (integrated pest management) strategies, we evaluated the sublethal and transgenerational effects of thiamethoxa ...
DOI:
10.1016/j.chemosphere.2018.10.126

11. Quantum Yields and N₂O Formation from Photolysis of Solid Films of Neonicotinoids

Author:
Wang, Weihong; Aregahegn, Kifle Z.; Andersen, Simone T.; Ni, Anton Z.; Rohrbacher, Andrea F.; Nielsen, Ole John; Finlayson-Pitts, Barbara J.
Source:
Journal of agricultural and food chemistry 2019 v.67 no.6 pp. 1638-1646
ISSN:
1520-5118
Subject:
thiamethoxam,   etc   ; Fourier transform infrared spectroscopy; acetamiprid; air; clothianidin; dinotefuran; greenhouse gases; irradiation; nitrous oxide; photolysis; thiacloprid; ultraviolet radiation; wavelengths;     Show all 13 Subjects
Abstract:
... Neonicotinoids (NN), first introduced in 1991, are found on environmental surfaces where they undergo photolytic degradation. Photolysis studies of thin films of NN were performed using two approaches: (1) transmission FTIR, in which solid films of NN and the gas-phase products were analyzed simultaneously, and (2) attenuated-total-reflectance FTIR combined with transmission FTIR, in which solid f ...
DOI:
10.1021/acs.jafc.8b05417

12. Correction: Ultrasonic-assisted modification of a novel silkworm-excrement-based porous carbon with various Lewis acid metal ions for the sustained release of the pesticide thiamethoxam

Author:
Wei, Yanan; Wu, Yuxiang; Chang, Qing; Xie, Meixuan; Wang, Xinhui; Mo, Jinwen; He, Xuekun; Zhao, Zhenxia; Zhao, Zhongxing
Source:
RSC advances 2017 v.7 no.56 pp. 35159
ISSN:
2046-2069
Subject:
thiamethoxam,   etc   ; Lewis acids; carbon; metal ions;     Show all 4 Subjects
Abstract:
... Correction for ‘Ultrasonic-assisted modification of a novel silkworm-excrement-based porous carbon with various Lewis acid metal ions for the sustained release of the pesticide thiamethoxam’ by Yanan Wei et al., RSC Adv., 2017, 7, 30020–30031. ...
DOI:
10.1039/c7ra90078c

13. Neonicotinoid insecticides in surface water from the central Yangtze River, China

Author:
Mahai, Gaga; Wan, Yanjian; Xia, Wei; Yang, Shunyi; He, Zhenyu; Xu, Shunqing
Source:
Chemosphere 2019 v.229 pp. 452-460
ISSN:
0045-6535
Subject:
thiamethoxam,   etc   ; acetamiprid; aquatic organisms; clothianidin; cumulative risk assessment; environmental monitoring; freshwater; imidacloprid; ingestion; land use; metabolites; nitenpyram; risk; spring; summer; surface water; thiacloprid; China; Yangtze River;     Show all 19 Subjects
Abstract:
... Neonicotinoid insecticides (NNIs) are extensively used insecticides worldwide, yet the data on NNIs residues in the Yangtze River, China is scarce. Occurrence and distribution of six NNIs and a metabolite (desmethyl-acetamiprid) in surface water were investigated in the central Yangtze River, China at 20 sites from March to July and September 2015. Acetamiprid (ACE), imidacloprid (IMI) and thiamet ...
DOI:
10.1016/j.chemosphere.2019.05.040

14. Occurrence and distribution of neonicotinoid insecticides in surface water and sediment of the Guangzhou section of the Pearl River, South China

Author:
Yi, Xiaohui; Zhang, Chao; Liu, Hongbin; Wu, Renren; Tian, Di; Ruan, Jujun; Zhang, Tao; Huang, Mingzhi; Ying, Guangguo
Source:
Environmental pollution 2019 v.251 pp. 892-900
ISSN:
0269-7491
Subject:
thiamethoxam,   etc   ; acetamiprid; anthropogenic activities; effluents; geometry; imidacloprid; nitrogen; pH; phosphorus; risk; river deltas; rivers; sediments; surface water; thiacloprid; water quality; China;     Show all 17 Subjects
Abstract:
... Little information is available about the occurrence of neonicotinoid insecticides in surface water and sediment of the metropolitan regions around the rivers in China. Here we investigate the residual level of neonicotinoids in the Guangzhou section of the Pearl River. At least one or two neonicotinoids was detected in each surface water and sediment, and the total amount of neonicotinoids (∑5neo ...
DOI:
10.1016/j.envpol.2019.05.062

15. Evaluation of the genotoxicity of neurotoxic insecticides using the micronucleus test in Tradescantia pallida

Author:
de Morais, Cássio Resende; Pereira, Boscolli Barbosa; Almeida Sousa, Patrícia Cristina; Vieira Santos, Vanessa Santana; Campos, Carlos Fernando; Carvalho, Stephan Malfitano; Spanó, Mário Antônio; de Rezende, Alexandre Azenha Alves; Bonetti, Ana Maria
Source:
Chemosphere 2019 v.227 pp. 371-380
ISSN:
0045-6535
Subject:
thiamethoxam,   etc   ; Tradescantia pallida; acclimation; acetamiprid; anthers; death; dyes; ethanol; fipronil; genotoxicity; imidacloprid; inflorescences; insects; ligands; light microscopy; micronucleus tests; models; mutagens; neurotoxicity; receptors; stems; trophic levels;     Show all 22 Subjects
Abstract:
... Neonicotinoids and phenylpyrazoles are classes of neurotoxic insecticides which are able to bind at different ligand sites of neural receptors, leading to the deregulation of insect neural activity and hence resulting in death. The misuse or indiscriminate use of these chemicals is directly associated with several toxicological effects in biota and at different trophic levels. Based on this premis ...
DOI:
10.1016/j.chemosphere.2019.04.073

16. An ultra-sensitive aptasensor based on carbon nanohorns/gold nanoparticles composites for impedimetric detection of carbendazim at picogram levels

Author:
Zhu, Chengxi; Liu, Dong; Chen, Zhi; Li, Libo; You, Tianyan
Source:
Journal of colloid and interface science 2019 v.546 pp. 92-100
ISSN:
0021-9797
Subject:
thiamethoxam,   etc   ; aptasensors; atrazine; carbendazim; carbon; dielectric spectroscopy; electron transfer; high performance liquid chromatography; lettuce; mass spectrometry; monitoring; nanogold; orange juice; statistics;     Show all 14 Subjects
Abstract:
... We reported a carbon nanohorns/gold nanoparticles composites-based impedimetric aptasensor for carbendazim (CBZ) detection in lettuce and orange juice at picogram levels. The increased electron-transfer resistance, resulting from the formation of CBZ-aptamer complex, was recorded by electrochemical impedance spectroscopy as the aptasensor response for CBZ. Under the optimal conditions, the propose ...
DOI:
10.1016/j.jcis.2019.03.035

17. Accumulation and toxicity of thiamethoxam and its metabolite clothianidin to the gonads of Eremias argus

Author:
Wang, Yinghuan; Zhang, Yang; Zeng, Tao; Li, Wei; Yang, Lu; Guo, Baoyuan
Source:
The Science of the total environment 2019 v.667 pp. 586-593
ISSN:
0048-9697
Subject:
thiamethoxam,   etc   ; agricultural land; androgen receptors; animal ovaries; blood; clothianidin; endocrine-disrupting chemicals; estrogen receptors; females; gene expression regulation; genes; liver; lizards; males; metabolites; prostaglandins; testes; testosterone; toxicity;     Show all 19 Subjects
Abstract:
... The endocrine disrupting effect of pesticides is considered to be an important factor in the decline of reptile populations. The large-scale application of neonicotinoids in the environment poses a potential threat to small farmland lizards Eremias argus. In this study, we evaluated the disruption effects of thiamethoxam and its metabolite clothianidin on the endocrine disruption of Eremias argus ...
DOI:
10.1016/j.scitotenv.2019.02.419

18. Hazard of a neonicotinoid insecticide on the homing flight of the honeybee depends on climatic conditions and Varroa infestation

Author:
Monchanin, Coline; Henry, Mickaël; Decourtye, Axel; Dalmon, Anne; Fortini, Dominique; Bœuf, Elodie; Dubuisson, Ludovic; Aupinel, Pierrick; Chevallereau, Colombe; Petit, Julie; Fourrier, Julie
Source:
Chemosphere 2019 v.224 pp. 360-368
ISSN:
0045-6535
Subject:
thiamethoxam,   etc   ; Deformed wing virus; Nosema; Varroa destructor; bioassays; climatic factors; flight; health status; honey bee colonies; honey bees; mites; pesticide registration; risk assessment; temperature;     Show all 14 Subjects
Abstract:
... The paradigm for all toxicological bioassays in the risk assessment of pesticide registration reflects the principle that experimental conditions should be controlled to avoid any other factors that may affect the endpoint measures. As honeybee colonies can be frequently exposed to bio-aggressors in real conditions, often concomitantly with pesticides, co-exposure to pesticide/bio-aggressors is be ...
DOI:
10.1016/j.chemosphere.2019.02.129

19. Implementation of a new modular facility to detoxify agro-wastewater polluted with neonicotinoid insecticides in farms by solar photocatalysis

Author:
Fenoll, José; Garrido, Isabel; Flores, Pilar; Hellín, Pilar; Vela, Nuria; Navarro, Ginés; García-García, José; Navarro, Simón
Source:
Energy 2019 v.175 pp. 722-729
ISSN:
0360-5442
Subject:
thiamethoxam,   etc   ; acetamiprid; catalysts; cost effectiveness; crops; equipment; farms; imidacloprid; insecticide residues; oxidants; photocatalysis; pollutants; sanitary and phytosanitary regulations; solar radiation; thiacloprid; titanium dioxide; wastewater;     Show all 17 Subjects
Abstract:
... As a consequence of phytosanitary treatments on crops a volume of agro-waste water containing pesticide residues from remnants and rinse of the treatment machinery is usually generated. These residues can become a danger to the environment and human health. Therefore, three pilot facility located in different farms were developed and used for wastewater detoxification containing four neonicotinoid ...
DOI:
10.1016/j.energy.2019.03.118

20. LC-MS/MS method validation for determination of selected neonicotinoids in groundwater for the purpose of a column experiment

Author:
Pietrzak, Damian; Wątor, Katarzyna; Pękała, Dorota; Wójcik, Justyna; Chochorek, Aneta; Kmiecik, Ewa; Kania, Jarosław
Source:
Journal of environmental science and health 2019 v.54 no.5 pp. 424-431
ISSN:
1532-4109
Subject:
thiamethoxam,   etc   ; acetamiprid; chemical analysis; clothianidin; detection limit; groundwater; imidacloprid; liquid chromatography; saturated flow; spectrometers; standard deviation; tandem mass spectrometry; thiacloprid; uncertainty; Canada;     Show all 15 Subjects
Abstract:
... The work was carried out to develop and validate a method based on liquid chromatography tandem mass spectrometry (LC-MS/MS) for the simultaneous detection and quantification of five neonicotinoid insecticides: acetamiprid, clothianidin, imidacloprid, thiacloprid and thiamethoxam in groundwater samples for the purpose of a further column experiment. This experiment will be used to analyze breakthr ...
DOI:
10.1080/03601234.2019.1574173