نتایج جستجو برای: pesticide residue

تعداد نتایج: 61939  

Journal: :Journal of chromatography. A 1996
J Tekel S Hatrík

This paper deals with the analysis of pesticide residues by chromatographic methods in samples of plant origin. Emphasis is put on the isolation and clean-up steps of the sample preparation for GC or LC determination. The problems of the extraction solvent selection and clean-up procedures using different types of adsorption column chromatography or gel permeation chromatography are discussed. ...

2002
J. R. COX

Pesticide residue analysis is used to support a wide variety of activities including crop protection research, environmental monitoring, consumer protection and legislative enforcement. It is undertaken by research institutes, academic institutions, private laboratories and governmental organizations. In the developed world, pesticide residue laboratories are readily accessible and, on balance,...

2016
Sun Jun Zhou Xin Mao Hanping Wu Xiaohong Zhang Xiaodong Gao Hongyan

Fast identification of pesticide residue level in lettuce leaves plays a key role in the test of food safety. In order to identify the different concentrations pesticide residues of lettuce leaves in a fast and nondestructive way, the hyperspectra coupled with chlorophyll fluorescence spectra was used in this research. Transmission electron microscopy (TEM) was used to identify the microstructu...

Journal: :Environmental toxicology and chemistry 2012
Peter Stahlschmidt Carsten A Brühl

Although bats are reported as being threatened by pesticides, they are currently not considered in European Union pesticide risk assessments. The reason for that contradiction is probably related to the scarcity of information on bat activity in pesticide-treated fields and the pesticide residues on their food items. The authors recorded bat activity and measured pesticide residues on bat-speci...

Journal: :Nepalese Horticulture 2022

Pesticides applied on food crops and vegetables not only reduce the pest population but also leave residue of chemicals that may result in serious health consequences. The study aims to access knowledge, skill, behavior towards chemical pesticides among vegetable producers, sellers, consumers Rupandehi district. A survey was carried out from November 2018 January 2019 know behaviors growers, co...

جامه بزرگی, سعید, سبحان اردکانی, سهیل, عبدی, سمیه,

Introduction & Objective: Pesticide residues in environment and food have a negative impact on the health of living organisms. Therefore, this study was carried out for evaluation of benomyl residues in mushroom marketed in Hamadan city in 2014 using spectrophotometry. Materials & Methods: 10 specimens of mushroom were collected from greenhouses and market basket of Hamadan city. After preparat...

Journal: :American Journal of Biomedical Science & Research 2019

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