نتایج جستجو برای: maximum residue level mrl

تعداد نتایج: 1383574  

Journal: :Frontiers in sustainable food systems 2023

Background In Ethiopia, pesticides are widely used in vegetable production. However, if incorrectly they may harm consumers of vegetables contaminated with pesticide residues, as well producers handling the and lead to ecological damage. We performed a cross-sectional survey assess residues produced central eastern Ethiopia. Methods A total 232 samples (91 tomatoes, 106 cabbages 35 Swiss chard)...

Journal: :Arabian Journal of Chemistry 2022

An analytical method was developed and validated for the determination of fludioxonil in rice samples. Rice samples study were collected from different regions Pakistan. The based on safe cost-effective extraction grains using acetone methanol (1:1), efficient clean-up through homogenous mixture acidic aluminium (12 g) activated charcoal (1 followed by liquid chromatographic with UV detection. ...

Journal: :Ciência e Natura 2023

Over the years Brazil has become one of largest agricultural producers and exporters in world. At same time, there was a significant increase use pesticides to productivity at harvest. In this context, is great concern about human health, fauna, flora, since inputs can go through different chemical processes migrate various environmental compartments. paper addresses review studies that have re...

2017
Ewa Szpyrka Aneta Matyaszek Magdalena Słowik-Borowiec

Dissipations of three insecticides: chlorantraniliprole, chlorpyrifos-methyl and indoxacarb in apples were studied following their foliar application on apples intended for production of baby food. The apples were sprayed with formulations for control of codling moth (Cydia Pomonella L.) and leafrollers (Tortricidae). Six experiments were conducted; each insecticide was applied individually on ...

2013

American foulbrood (AFB) and European foulbrood (EFB) are destructive, infectious bacterial diseases in honeybees (Apis melifera), which can severely decrease the honey bee population and honey production (Gojmerac, 1980). American foulbrood spores are highly-resistant and can remain vital in combs and honey for many years. To control outbreaks of these infections in honeybee colonies, tetracyc...

Journal: :caspian journal of chemistry 2013
mohammad reza hadjmohammadi hosein asri s. saman s.j. nazari

an extraction method based on matrix solid phase dispersion (mspd) and high performance liquid chromatography with uv detection for quantification of two widely used pesticides (malathion and α-endosulfan) in khazar rice from north of iran were investigated. the ratio of solid phase (adsorbent) to sample, types of eluting solvent and its volume were optimized to achieve the highest recoveries f...

Hosein Asri, Mohammad Reza Hadjmohammadi, S. Saman S.J. Nazari

An extraction method based on matrix solid phase dispersion (MSPD) and high performance liquid chromatography with UV detection for quantification of two widely used pesticides (Malathion and α-Endosulfan) in Khazar rice from north of Iran were investigated. The ratio of solid phase (adsorbent) to sample, types of eluting solvent and its volume were optimized to achieve the highest recoveries f...

Journal: :Journal of AOAC International 2000
B D Ripley L I Lissemore P D Leishman M A Denommé L Ritter

For the 5-year period 1991 to 1995, 1536 vegetable and 802 fruit samples were analyzed. The purpose of this study was to determine if pesticides were present on Ontario-produced fruits and vegetables, and if so, to determine if residues violated maximum residue limits (MRLs). Overall, 31.5% of the samples had no detectable pesticide residues, whereas 68.5% contained one or more residues. Most o...

Journal: :Agronomy 2022

Food classification is an important part of food safety standards. In this paper, we propose a novel visual comparative analysis method for trees (FCTs) in pesticide maximum residue limit (MRL) standards, called TreeMerge, to lay the foundation comprehensive comparison MRL First, union tree constructed by combining two FCTs be compared. Then, sunburst with embedded chordal graph (SECG) and over...

Journal: :Journal of chromatography. A 2010
Michelle Whelan Brian Kinsella Ambrose Furey Mary Moloney Helen Cantwell Steven J Lehotay Martin Danaher

A new UHPLC-MS/MS (ultra high performance liquid chromatography coupled to tandem mass spectrometry) method was developed and validated to detect 38 anthelmintic drug residues, consisting of benzimidazoles, avermectins and flukicides. A modified QuEChERS-type extraction method was developed with an added concentration step to detect most of the analytes at <1 microg kg(-1) levels in milk. Anthe...

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