pesticide residue Articles
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Levels of organochlorine pesticides residues in meat
Abstract: Concentrations of organochlorine pesticides (Lindane, Aldrin, Dieldrin, Endosulfan, DDT and DDE) residues in beef samples from the Kumasi and Buoho abattoirs in Ghana were determined using gas chromatography. Organochlorine residues were found in all the samples. The average concentration of lindane in beef fat samples from Kumasi was 4.03 µg/kg and 1.79 µg/kg in beef fat from Buoho. ...
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The interaction between natural organic matter in raw waters and pesticide residues: a three dimensional excitation–emission matrix (3DEEM) fluorescence investigation
This paper examines the interaction between dissolved natural organic matter and pesticide residues, both of which are found in raw water sources, using three dimensional excitation–emission matrix (3DEEM) fluorescence spectroscopy. It was observed that pesticide residue at 0.1 mg L−1 formed a complex with humic-like fluorophores that are commonly found in raw water samples. ...
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Distribution of Pesticide Residues Within Homes in Central New York State
Abstract Residues for 17 pesticides were analyzed in 41 households in central New York State that represented farm, rural, and urban houses. Samples were taken in both summer and winter of 2000–2001 from the same households from four locations; family room carpet; adjacent smooth floor; flat tabletop surface; and settled dust collected in a Petri dish on a tabletop. Pesticide residues were ...
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Dry–wet cycles increase pesticide residue release from soil
Soil drying and rewetting may alter the release and availability of aged pesticide residues in soils. A laboratory experiment was conducted to evaluate the influence of soil drying and wetting on the release of pesticide residues. Soil containing environmentally long‐termaged (9–17 years) 14C‐labeled residues of the herbicides ethidimuron (ETD) and methabenzthiazuron (MBT) and the fungicide ...
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Determination of Pesticide Residues in Oranges by an Automated QuEChERS Extraction
Abstract With the rise in popularity of QuEChERS, due to its reliable multiresidue methods it has driven the need for automation of the QuEChERS extraction to increase productivity and throughput. The AutoMateQ40 streamlines the QuEChERS method from adding Acetonitrile (ACN) and buffering salts, shaking, mixing, centrifugating the sample, transferring to a dispersive solid phase extraction ...
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Transfer and translocation of organochlorine pesticide residues in an agricultural area of Romania
The study refers to translocation of some organochlorine persistent pesticides (Lindane, Aldrin, Endosulphane and DDT) in/from soil to surface and underground water and their accumulation in some crops in an agricultural area nearby Bucharest. The samples analysed were soil, surface water (Arges River) and underground water (wells). Pesticide residues were found especially in soil samples, in ...
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Determination of Pesticide Residues in Tea by an Automated QuEChERS Solution
Abstract The QuEChERS (Quick-Easy-Cheap-Effective-Rugged-Safe) sample extraction method was developed for the determination of pesticide residues in agricultural commodities. While originally QuEChERS has been developed for plant matrices the technique has since been adapted to be used in several applications and in many additional matrices such as dry tea samples. With the rise in popularity of ...
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Improvement of a pesticide immunosensor performance using site–directed antibody immobilisation and carbon nanotubes
The potential toxicity of pesticide residues in drinking water has meant a rigid regulation for the appearance of these pollutants. Thus, in this work, we developed a new immunosensor for atrazine detection. We focused on the optimisation of the antibody immobilisation method on sensor surface for the enhancement of the biosensor sensitivity. First, with site–directed immobilisation of rabbit ...
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Modeling global emissions and residues of pesticides
A major portion of persistent organic pollutants (POPs) is organochlorine pesticides (OCPs), in which carbon and chlorine are combined. During the last decade, a number of researches have been devoted to create emission inventories of OCPs at regional and global scales. The studies on residue inventories of OCPs, however, are sparse. In the absence of complete data and information on worldwide ...
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Determination of chlorpyrifos residues in buffalo meat samples using high performance liquid chromatography
Chlorpyrifos, an organophosphorous compound, is widely used to improve the yield of agricultural produce in India. Public concern over pesticide residues in foods has been increasing such that it has become a significant food safety issue. The present study was conducted to screen 254 buffalo meat samples collected from different slaughter houses for chlorpyrifos residues. The putative ...
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The Determination of Pesticides in Wine
Abstract According to the state institute for chemical and veterinary analysis of food, “Conventionally grown wine grapes are one of the crops most extensively treated with pesticides” (CVUA Stuttgart). The use of different fungicides and insecticides is commonplace in vineyards across the world to improve crop yields. Maximum residue levels (MRLs) have been established for grapes in ...
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Determination of Pesticide Residues in Honey, by an Automated QuEChERS Solution
Abstract The QuEChERS (Quick-Easy-Cheap-Effective-Rugged-Safe) sample extraction method was developed for the determination of pesticide residues in agricultural commodities. While originally QuEChERS had been developed for plant matrices, the technique has since been adapted for many additional matrices such as honey, as well as several other applications. With the rise in popularity of this ...
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Analysis of Multi-Pesticide Residues in Vegetables, Food, and Fruits by SPE/GC-MS
Cleanup of matrices is the first, the most important, and the most critical step for both broad-spectrum screening and accurate determination of pesticides and their metabolites in vegetables,meats, drinks and fruits. In most cases, solid phase extraction (SPE) methods are used to clean up the extracts before the GC-MS analysis. The ideal SPE material(s) should remove the greatest number of food ...
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In an Ideal World
In an Ideal World Food Safety Assessment In an ideal world, complete and accurate food consumption survey data would be available, compiled with full information at the individual eating event level. For every food specified in an eating event, the food brand and packaging type would also be specified. For each food brand, information would be available on concentration levels of all ...
By Creme Global
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Analysis of pesticide residues in drinking water samples using solid-phase micro-extraction (SPME) coupled to a gas chromatography-electron-capture detector (GC-ECD)
The headspace solid-phase micro-extraction (HS-SPME) method with polydimethylsiloxane (PDMS, 100 μm) fiber is a cost-effective technique for the determination of different pesticide residues in environmental and biological samples followed by a gas chromatography-electron-capture detector (GC-ECD). In the present study more than 147 water samples collected in and around Lucknow city were ...
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Research institute, Japan - Case Study
“We are also using BUCHI Rotary Evaporators and Vacuum Pump in our lab. We made experience that all BUCHI instruments are user friendly and help to increase the productivity.”Company / Institution Customer: Research institute, Japan This research institute deals with inspection tests and research for pesticide residue, additives, and toxic substances in food. Application: ...
By BUCHI
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Analysis of EU15+1 PAHs in Soil by the AutoMate-Q40: An Automated QuEChERS Solution
Abstract Polycyclic Aromatic Hydrocarbons (PAHs) are a large group of organic compounds found in the environment. PAHs are monitored by the US Environmental Protection Agency and European Union due to their carcinogenic characteristics. In recent global events, PAHs have been a concern ever since the late 1980’s. QuEChERS is a Quick-Easy-Cheap-Effective-Rugged-Safe extraction method that ...
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The Real World
The Real World Food Safety Assessment As outlined in our Ideal World Article, it is not feasible or even possible to have a complete food consumption data set which records every single ingredient or chemical. It is especially not possible to have an up-to-date one, since food consumption habits and compositions are changing constantly and food surveys are carried out infrequently due ...
By Creme Global
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Increase efficiency and reduce labor time when evaporating samples - Case Study
“The Syncore® Polyvap greatly improved the efficiency and turnover time in our lab, while providing high quality results and highest solvent recovery”. Customer name Adam Nicholas Company / Institution OMIC USA Inc. Analytical laboratory, Portland, OR, USA Product lines Parallel Evaporation Industries Environmental Customer: OMIC USA Inc. Analytical laboratory, ...
By BUCHI
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Determining pesticides in dietary supplements with QuEChERS extraction, cartridge SPE, and GCxGC-TOFMS
Regulatory requirements are driving the development of new multiresidue pesticide methods for dietary supplements. Minimizing matrix interference is critical for data accuracy. The novel approach employed here combines QuEChERS extraction, cartridge SPE cleanup, and GCxGC-TOFMS analysis, and results in good recoveries across a range of compounds found in these complex matrices. Introduction ...
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