水样中呋虫胺杀虫剂的提取测定方法。

Sandro B Soares, Lázaro C Sicupira, Gevany P Pinho, Flaviano O Silvério
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引用次数: 0

摘要

呋虫胺是第三代类烟碱杀虫剂的一种化合物,在防治对有机磷、氨基甲酸酯和拟除虫菊酯等常规杀虫剂具有抗药性的害虫方面效果显著。与其他农药相比,该分子具有高水溶性(25°C时为39,830 mg L-1),这有利于其拖动和淋滤到较低的土壤层。因此,本研究旨在优化和验证液液萃取-低温净化(le - ltp) -高效液相色谱-二极管阵列检测(HPLC-DAD) -测定水中呋喃残留量的方法。结果表明,分析物回收率为85.44 ~ 89.72%,相对标准偏差为-1,检测限为5.00µg L-1,定量限为10.00µg L-1。基质效应为130天),在有阳光的水中半衰期为7天。LLE-LTP - HPLC-DAD联用是一种简单、简便、高效的水样中呋虫胺提取分析方法。
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Extraction method for determining dinotefuran insecticide in water samples.

Dinotefuran is a compound belonging to the third generation of nicotinoid insecticides, and has been effective in combating pests that are resistant to conventional insecticides, such as organophosphates, carbamates, and pyrethroids. This molecule presents high-water solubility (39,830 mg L-1 at 25 °C) compared to other pesticides, which facilitates its drag and leaching to lower soil layers. Therefore, the present study aimed to optimize and validate liquid-liquid extraction with low temperature purification (LLE-LTP) to determine dinotefuran residues in water by high performance liquid chromatography with diode array detection (HPLC-DAD). The results revealed that the analyte recovery ranged from 85.44 to 89.72% with a relative standard deviation <5.8. LLE-LTP was selective, precise, accurate, and linear in the range from 10.0 to 210 µg L-1, and presented limits of detection and quantification of 5.00 and 10.00 µg L-1, respectively. The matrix effect was <14%. The stability study of dinotefuran in water revealed significant stability of this molecule in water in the absence of light (>130 days), and a half-life of 7 days in water with sunlight. LLE-LTP coupled to HPLC-DAD was a simple, easy, and efficient method for extracting and analyzing dinotefuran in water samples.

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来源期刊
CiteScore
4.00
自引率
5.00%
发文量
87
审稿时长
1 months
期刊介绍: 12 issues per year Abstracted/indexed in: Agricola; Analytical Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; BioSciences Information Service of Biological Abstracts (BIOSIS); CAB Abstracts; CAB AGBiotech News and Information; CAB Irrigation & Drainage Abstracts; CAB Soils & Fertilizers Abstracts; Chemical Abstracts Service Plus; CSA Aluminum Industry Abstracts; CSA ANTE: Abstracts in New Technology and Engineering; CSA ASFA 3 Aquatic Pollution and Environmental Quality; CSA ASSIA: Applied Social Sciences Index & Abstracts; CSA Ecology Abstracts; CSA Entomology Abstracts; CSA Environmental Engineering Abstracts; CSA Health & Safety Science Abstracts; CSA Pollution Abstracts; CSA Toxicology Abstracts; CSA Water Resource Abstracts; EBSCOhost Online Research Databases; Elsevier BIOBASE/Current Awareness in Biological Sciences; Elsevier Engineering Information: EMBASE/Excerpta Medica/ Engineering Index/COMPENDEX PLUS; Environment Abstracts; Environmental Knowledge; Food Science and Technology Abstracts; Geo Abstracts; Geobase; Food Science; Index Medicus/ MEDLINE; INIST-Pascal/ CNRS; NIOSHTIC; ISI BIOSIS Previews; Pesticides; Food Contaminants and Agricultural Wastes: Analytical Abstracts; Pollution Abstracts; PubSCIENCE; Reference Update; Research Alert; Science Citation Index Expanded (SCIE); and Water Resources Abstracts.
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