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Keyword:'55464-u'
Showing 1-30 of 97 results for "

55464-u

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Zhengyun Lou et al.
Se pu = Chinese journal of chromatography, 26(5), 568-576 (2009-01-24)
A multiresidue analytical method was developed for the determination of ninety-two pesticides in tea using solid-phase extraction (SPE) and gas chromatographic determination. Tea samples were extracted with acetonitrile, organophosphorus pesticides were clean-up by an Envi-Carb SPE cartridge, eluted with 10
K Martínez et al.
Journal of chromatography. A, 879(1), 27-37 (2000-06-28)
A new method for the simultaneous determination of antifouling pesticides and some of their byproducts such as dichlofluanid, diuron and its byproducts [demethyldiuron and 1-(3,4-dichlorophenyl)urea], (2-thiocyanomethylthio)ben: zothiazole, chlorothalonil, Sea-nine 211, Irgarol 1051 and one of its byproducts (2-methylthio-4-tert.-butylamino-s-triazine) in seawater
Jing Ha et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1017-1018, 187-194 (2016-03-19)
A new method using solid phase extraction (SPE) combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS) has been developed for the determination of six polyether antibiotics, including lasalocid, salinomycin, monensin, narasin, madubamycin and nigericin residues, in foods of animal origin. The
Rie Ishii et al.
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan, 47(5), 201-212 (2006-11-30)
A simultaneous method using liquid chromatography coupled with electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS) was developed for the determination of pesticide residues in crops. Mass spectral acquisition was performed in the positive mode by applying multiple reaction monitoring. In LC
Yeping Song et al.
Wei sheng yan jiu = Journal of hygiene research, 43(5), 790-792 (2014-12-03)
To develop a method of gas chromatography (GC) for determining residues of promtryne in shellfish. The sample was extracted with ethyl acetate, and cleaned-up with Envi-Carb SPE cartridge, alumina-N SPE cartridge, and determined by GC-FPD with DB - 1701 capillary
J Slobodník et al.
Journal of chromatography. A, 750(1-2), 227-238 (1996-10-25)
The suitability of Empore-activated carbon disks (EACD), Envi-Carb graphitized carbon black (GCB) and CPP-50 graphitized carbon for the trace enrichment of polar pesticides from water samples was studied by means of off-line and on-line solid-phase extraction (SPE). In the off-line
Mercedes Barriada-Pereira et al.
Journal of AOAC International, 93(3), 992-998 (2010-07-16)
A method based on matrix solid-phase dispersion (MSPD) and SPE to determine 20 organochlorine pesticides (OCPs) in fish tissues (muscle and liver) was optimized in terms of the sorbents and elution solvents used for the analysis. The following analytical components
Jerzy Falandysz et al.
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering, 47(3), 428-434 (2012-02-11)
Perfluorinated alkylated substances (PFAS) have been determined in surface sediments and sediment core from Gulf of Gdańsk, Baltic Sea. Perfluorooctanesulphonate (PFOS), perfluorohexanesulphonate (PFHxS), perfluorodecanoate (PFDA), perfluoronanoate (PFNA), perfluorooctanoate (PFOA), perfluoroheptanoate (PFHpA), perfluoroundecanote (PFUnDA), perfluorododecanoate (PFDoDA) and perfluorohexanoate (PFHxA) were quantified
Ronald E Hunter et al.
Journal of agricultural and food chemistry, 58(3), 1396-1402 (2010-01-16)
We have developed a rapid, high-throughput, accurate, multiresidue method for the analysis of selected organophosphorus and pyrethroid pesticides in a variety of food samples suitable for use in public health and epidemiologic investigations of high-use pesticides using modifications of existing
Li Han et al.
Se pu = Chinese journal of chromatography, 25(6), 902-906 (2008-02-09)
Endosulfan is one of the organochliorine pesticides and contains two stereoisomers, alpha-endosulfan and beta-endosulfan. Endosulfan sulfate is the oxide of endosulfan with toxicity comparable to endosulfan. The method was developed for the analysis of alpha-endosulfan, beta-endosulfan and endosulfan sulfate in
Staci Massey Simonich et al.
Integrated environmental assessment and management, 9(4), 554-559 (2013-05-29)
The risks of 1,4-dioxane (dioxane) concentrations in wastewater treatment plant (WWTP) effluents, receiving primarily domestic wastewater, to downstream drinking water intakes was estimated using distributions of measured dioxane concentrations in effluents from 40 WWTPs and surface water dilution factors of
E Concha-Graña et al.
Journal of chromatographic science, 45(7), 369-374 (2007-08-30)
In order to propose a versatile method to use in laboratories devoted to environmental analysis, a scheme for the determination of organochlorine pesticides from different solid matrices is evaluated. Pressurized liquid extraction is chosen as the sample preparation technique, followed
Andreia Alves et al.
Talanta, 144, 574-583 (2015-10-11)
In the recent years hair has been increasingly used as alternative matrix in human biomonitoring (HBM) of environmental pollutants. Sampling advantages and time integration of exposure assessment seems the most attractive features of hair matrix. In the current study, a
Maria Teresa Salles Trevisan et al.
Journal of chromatography. A, 1512, 98-106 (2017-07-20)
An analytical method using a quick, easy, cheap, effective, rugged and safe (QuEChERS) procedure for multi-residue determination of 52 pesticides in coffee leaf extractshas been developed and validated according to SANTE/11945/2015 guidelines. Different sorbent combinations for dispersive solid phase extraction
M Barriada-Pereira et al.
Journal of chromatography. A, 1061(2), 133-139 (2005-01-12)
A method to determine 21 organochlorine pesticides (OCPs) in tree leaves [chestnut (Castanea sativa), hazel (Corylus avellana), oak (Quercus robur) and walnut tree (Juglans regia)] based on microwave-assisted extraction (MAE) followed by solid-phase extraction (SPE) clean-up is described. After extraction
John M Hayes et al.
Journal of AOAC International, 92(1), 340-347 (2009-04-23)
Nuflor (florfenicol) Premix for Swine was recently approved by the U.S. Food and Drug Administration (FDA) for control of swine respiratory disease (SRD). A simple method for the assay of florfenicol in Type C medicated swine feeds was recently evaluated
J García-Lavandeira et al.
Analytical and bioanalytical chemistry, 397(2), 751-763 (2010-03-10)
A highly sensitive procedure for the efficient routine control of aromatic amines derived from banned azo dyes in textile and leather products was developed and optimized. The procedure involves the extraction and reduction of azo dyes from solid samples following
Pingzhong Yu et al.
Journal of the science of food and agriculture, 97(10), 3294-3299 (2016-12-16)
The residue concentrations and dissipation rate of a new oxathiapiprolin fungicide in grapes and soil were investigated to provide an evaluation for the safe use of oxathiapiprolin in grapes. Pesticide residue was extracted by acetonitrile, then purified by solid-phase extraction
Maki Kobayashi et al.
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan, 43(3), 133-143 (2002-09-20)
We investigated the determination of N-methylcarbamate pesticides and their metabolites in agricultural products by HPLC with post-column fluorescence detection after clean-up with an SPE cartridge. The homogenate of agricultural products was extracted with acetone. The crude extract was partitioned between
Anna Martínez-Villalba et al.
Electrophoresis, 34(6), 870-876 (2013-01-22)
Veterinary medicines are widely administered to farm animals since they keep animals healthy at overcrowded conditions. Nevertheless the continuous administration of medicines to farm animals can frequently lead to the presence of residues of veterinary drugs in consumption products. Amprolium
Dunming Xu et al.
Se pu = Chinese journal of chromatography, 31(3), 218-222 (2013-06-22)
An effective method was developed and applied to determine the residues of ten pesticides of pyrazoles and pyrroles in tea by accelerated solvent extraction coupled with gas chromatography-tandem mass spectrometry (ASE-GC-MS/MS). The samples were extracted with ethyl acetate-hexane (1:1, v/v)
Sachiyo Ibuki et al.
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan, 48(5), 139-143 (2007-11-22)
A method for simultaneous determination of Dichlorvos (DDVP), Trichlorfon (DEP) and Naled (BRP) in fruits and vegetables by liquid chromatography with tandem mass spectrometry (LC/MS/MS) was developed. Pesticides were extracted with ethyl acetate together with phosphoric acid and anhydrous sodium
U Führer et al.
Analytical and bioanalytical chemistry, 354(3), 333-343 (1996-01-01)
Halogenated anisoles (methyl-phenyl ethers) appear to be ubiquitous organic trace compounds in the environment. An analytical method is presented for analyzing the altogether 134 congeners of chloro-, bromo- and mixed bromochloro-anisoles on an isomer-specific basis in air. High volume sampling
Bing Shao et al.
Journal of AOAC International, 92(2), 604-611 (2009-06-03)
A sensitive analytical method has been developed and validated for simultaneous determination of 16 glucocorticoid (fluorometholone, flumethasone, triamcinolone, aldosterone, clobetasol propionate, methylprednisolone, fluocinolone acetonide, hydrocortisone, prednisone, dexamethasone, beclomethasone, prednisolone, budesonide, triamcinolone acetonide, fludrocortisone acetate, and cortisone) residues in pig tissues
Yong Yu et al.
Talanta, 89, 258-263 (2012-01-31)
Endocrine disrupting compounds (EDCs) and pharmaceuticals and personal care products (PPCPs) have been acknowledged as emerging pollutants due to widespread contamination in environment. A rapid and reliable analytical method, based on ultrasonic extraction, clean up on Envi-carb cartridge, derivatized with
Angelo Antonio D'Archivio et al.
Talanta, 71(1), 25-30 (2007-01-15)
A procedure based on solid-phase extraction (SPE) followed by high-performance liquid chromatography (HPLC) with diode array detection has been developed for the simultaneous analysis of 16 widely used pesticides in groundwater samples. The compounds analysed were: aldicarb, atrazine, desethylatrazine, desysopropylatrazine
Li Li et al.
Se pu = Chinese journal of chromatography, 28(3), 301-304 (2010-06-17)
A high performance liquid chromatography-tandem mass spectrometry method (HPLC-MS/MS) was developed for the analysis of amitrole residues in agricultural products. The samples were extracted by 25% acetone for wheat, fish, pork and liver samples, 1% acetic acid-25% acetone for maize
V Nardelli et al.
Journal of chromatography. A, 1034(1-2), 33-40 (2004-05-01)
A rapid multiresidue extraction method for organochlorinated pesticides from fish feed was developed, which is based on the extracted fat treatment by n-hexane, concentrated sulphuric acid and ENVI-carb, a graphitized non-porous carbon material. The final residue, obtained in about 50
Xia Li et al.
Journal of separation science, 38(11), 1998-2005 (2015-04-03)
A highly sensitive method based on solid-phase extraction and ultra high performance liquid chromatography with electrospray tandem mass spectrometry has been developed for simultaneous determination of five iodinated X-ray contrast media in environmental water samples. Various solid-phase extraction cartridges have
Isabel Ortiz González et al.
Analytical and bioanalytical chemistry, 403(7), 2039-2046 (2012-04-25)
Sewage sludge is a residue from wastewater treatment plants which is considered to be harmful to the environment and all living organisms. Gasification technology is a potential source of renewable energy that converts the sewage sludge into gases that can
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