A rapid and sensitive HPLC method has been developed and validated for the determination of abamectin residues (avermectin B1a and B1b, as well as the metabolite 8,9-Z-avermectin B1) in apples, pears and tomatoes. Residues are extracted with acetonitrile. The diluted extract is cleaned up on a C18 solid-phase extraction cartridge. Abamectin residues are derivatised with trifluoroacetic acid and 1-methylimidazole and determined by reversed-phase liquid chromatography with fluorescence detection (excitation: 365 nm and emission: 470 nm). High and consistent recoveries, ranging from 88 to 106%, were obtained, at spiking levels of 10, 20 and 50 micrograms/kg, when analysing apples, pears and tomatoes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0021-9673(98)00863-2 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Green Carbon Dots/CaCO/Abamectin Colloidal Pesticide Formulation for Safer and More Effective Pest Management.
ACS Nano
December 2024
School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, P. R. China.
An ideal green leaf-deposited pesticide formulation should offer advantages such as good water dispersibility, strong foliar affinity, sustained or controlled release of active ingredients, photostability and rain-fastness, minimal nontarget toxicity, use of nontoxic organic solvents, and degradable adjuvants. In line with this objective, we present green preparation of a colloidal pesticide formulation using optimized lysine-derived carbon dots (LysCDs)-modified CaCO (LysCDs/CaCO) particles as the carrier and abamectin (Abm) as the active ingredient. The loading capacity of abamectin in this colloidal pesticide (LysCDs/CaCO/Abm) is 1.
View Article and Find Full Text PDFToxicity of Eight Insecticides on and Its Pupal Parasitoid .
Insects
November 2024
Shandong Key Laboratory for Green Prevention and Control of Agricultural Pests, Jinan 250100, China.
The pupal parasitoid (Hymenoptera: Diapriidae) has been evaluated as a biological agent of . Integrated pest management strategies mostly rely on combined application of multiple insecticides and natural enemies. This study assessed the toxicity of eight common insecticides against in fruit orchards and the effects of semilethal and sublethal doses on .
View Article and Find Full Text PDFPesticide residues and risk assessment of trunk-injected pesticides in pine nut (Pinus koraiensis) seeds.
Chemosphere
October 2024
Department of Forest Environment Protection, Kangwon National University, Chuncheon, 24341, Republic of Korea. Electronic address:
Pine nuts, the edible seeds of pines (Family: Pinaceae, Pinus spp.), are popular worldwide, particularly those from the Korean pine tree (Pinus koraiensis), which is economically significant and widely exported. The spread of pine wilt disease (PWD) caused by pinewood nematodes (PWNs) has necessitated the use of trunk injections of pesticides in Korea, raising concerns about pesticide residues in edible pine nuts.
View Article and Find Full Text PDFCompatibility of synthetic and biological pesticides with a biocontrol agent Phytoseiulus longipes (Acari: Phytoseiidae).
Exp Appl Acarol
August 2024
Departamento de Fitossanidade, Universidade Estadual Paulista (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista - Laboratório de Acarologia (AcaroLab), Jaboticabal, SP, 14884-900, Brasil.
Phytoseiulus longipes is a predatory mite of Tetranychus evansi, which is an invasive pest in Africa and elsewhere. The introduction of this predator in Africa has considerable potential, but little is known about the compatibility of P. longipes with commonly used pesticides.
View Article and Find Full Text PDFUncovering hidden dangers: The combined toxicity of abamectin and lambda-cyhalothrin on honey bees.
Sci Total Environ
July 2024
State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Key Laboratory for Pesticide Residue Detection of Ministry of Agriculture and Rural Affairs, Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China. Electronic address:
Studying the toxic effects of pesticides on bees has consistently been a prominent area of interest for researchers. Nonetheless, existing research has predominantly concentrated on individual toxicity assessments, leaving a gap in our understanding of mixed toxicity. This study delves into the individual and combined toxic effects of abamectin (ABA) and lambda-cyhalothrin (LCY) on honey bees (Apis mellifera) in laboratory settings.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!