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55286-u

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[Determination of endosulfans and its metabolite in fishery foods using gas chromatography-mass spectrometry with negative ion chemical ionization].

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

Determination of perfluorinated alkylated substances in sediments and sediment core from the Gulf of Gdańsk, Baltic Sea.

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

Method for the determination of organophosphorus and pyrethroid pesticides in food via gas chromatography with electron-capture detection.

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

Pesticide analysis in coffee leaves using a quick, easy, cheap, effective, rugged and safe approach and liquid chromatography tandem mass spectrometry: Optimization of the clean-up step.

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

Comparison of different sorbents for multiresidue solid-phase extraction of 16 pesticides from groundwater coupled with high-performance liquid chromatography.

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

[Simultaneous determination of pesticide residues in crops by liquid chromatography with tandem mass spectrometry].

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

Sample preparation based on matrix solid-phase dispersion and solid-phase extraction cleanup for the determination of organochlorine pesticides in fish.

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

[Determination of prometryne residue in shellfish by gas chromatography].

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

Pressurized liquid extraction of organochlorine pesticides from certified solid materials.

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

Determination of 21 organochlorine pesticides in tree leaves using solid-phase extraction clean-up cartridges.

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

Sampling of tar from sewage sludge gasification using solid phase adsorption.

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

Probabilistic analysis of risks to US drinking water intakes from 1,4-dioxane in domestic wastewater treatment plant effluents.

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

Rapid multiresidue extraction method of organochlorinated pesticides from fish feed.

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

Solid-phase extraction coupled with ultra high performance liquid chromatography and electrospray tandem mass spectrometry for the highly sensitive determination of five iodinated X-ray contrast media in environmental water samples.

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

New approach for assessing human perfluoroalkyl exposure via hair.

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

Solid-phase extraction of polar pesticides from environmental water samples on graphitized carbon and Empore-activated carbon disks and on-line coupling to octadecyl-bonded silica analytical columns.

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

Multi-pesticide residue analysis in nutraceuticals from grape seed extracts by gas chromatography coupled to triple quadrupole mass spectrometry

Nieto-Garcia, A.J., et al.

Food Control, 47, 369-380 (2015)

[Simultaneous determination of dichlorvos, trichlorfon and naled in fruits and vegetables by liquid chromatography with tandem mass spectrometry].

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

[Determination of amitrole in agricultural products by high performance liquid chromatography-tandem mass spectrometry].

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

Field amplified sample injection-capillary zone electrophoresis for the analysis of amprolium in eggs.

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

Assay of florfenicol in swine feed: interlaboratory study.

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

Determination of six polyether antibiotic residues in foods of animal origin by solid phase extraction combined with liquid chromatography-tandem mass spectrometry.

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

Tetrahydrofuran-water extraction, in-line clean-up and selective liquid chromatography/tandem mass spectrometry for the quantitation of perfluorinated compounds in food at the low picogram per gram level.

Ana Ballesteros-Gómez et al.

Journal of chromatography. A, 1217(38), 5913-5921 (2010-08-17)

A new solvent extraction system was developed for extraction of PFCs from food. The extraction is carried out with 75:25 (v/v) tetrahydrofuran:water, a solvent mixture that provides an appropriate balance of hydrogen bonding, dispersion and dipole-dipole interactions to efficiently extract

Detection of emerging contaminants (UV filters, UV stabilizers and musks) in marine mussels from Portuguese coast by QuEChERS extraction and GC-MS/MS.

M Picot Groz et al.

The Science of the total environment, 493, 162-169 (2014-06-20)

The UV filters and musk fragrances have come into focus because these compounds are contained and increasingly used not only in sunscreen products but also in many products of daily use, such as cosmetics, skin creams, plastics or varnish. In

Multiresidue method for determination of 88 pesticides in berry fruits using solid-phase extraction and gas chromatography-mass spectrometry: Determination of 88 pesticides in berries using SPE and GC-MS.

X Yang et al.

Food chemistry, 127(2), 855-865 (2011-07-15)

A method using solid phase extraction (SPE) cleanup followed by gas chromatography-mass spectrometry (GC-MS) has been established for quantitative determination of 88 pesticide residues in berry fruits including raspberry, strawberry, blueberry and grape. Based on an appraisal of the characteristics

Determination of oxathiapiprolin concentration and dissipation in grapes and soil by ultrahigh-performance liquid chromatography-tandem mass spectrometry.

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

High-throughput analytical techniques for multiresidue, multiclass determination of 653 pesticides and chemical pollutants in tea--Part III: Evaluation of the cleanup efficiency of an SPE cartridge newly developed for multiresidues in tea.

Guo-Fang Pang et al.

Journal of AOAC International, 96(4), 887-896 (2013-09-05)

A comparative study was conducted over three stages on the cleanup efficiency of SPE cartridge Cleanert TPT, newly developed for multigroups of pesticide residues in tea. In Stage I, different SPE cartridges C18, graphite carbon black (GCB), primary secondary amine

[Combination of programmable temperature vaporizer-large volume injection gas chromatography-mass spectrometry and automated mass spectral deconvolution and identification system for the determination of 32 pesticides in fruits and vegetables].

Zhaoyun Cao et al.

Se pu = Chinese journal of chromatography, 32(12), 1390-1399 (2015-04-24)

An analytical method was developed for the simultaneous determination of 32 pesticides including organophosphorus, organochlorine, pyrethroid and carbamate pesticides in fruits and vegetables using gas chromatography-mass spectrometry (GC-MS). The sample was extracted with acetonitrile, and the organic layer was cleaned

[Simultaneous determination of N-methylcarbamate pesticides and their metabolites in agricultural products].

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

[Determination of 92 pesticide residues in tea by gas chromatography with solid-phase extraction].

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

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