Tetraethyl orthosilicate (TEOS, 98%, analytical reagent) was purchased from Acros Organics. Absolute ethanol (99.9%, analytical reagent) and ammonia water (NH4OH, analytical reagent) were obtained from Sigma Aldrich Co., St. Louis, MO, USA. To prepare patterned MIP films, MAA (Daejung Chemicals & Metals Co., Siheung, Korea) was used as a functional monomer. EGDMA, 2,4-dichlorophenoxyacetic acid (2,4-D; Mw 221.04 g/mol), and dimethylformamide (DMF) were purchased from Tokyo Chemical Industry Co (Tokyo, Japan). use as cross-linker, template molecule, and solvent, respectively. 2,2′-azobisisobutyronitrile (AIBN), used as an initiator, was purchased from Daejung Chemicals & Metals Co. Atrazine, ametryn, glufosinate (Sigma-Aldrich Co.), and (4-chloro-2-methylphenoxy)acetic acid (MCPA, Tokyo Chemical Industry Co.) were used as 2,4-D-analogous chemicals for the MIPs’ selectivity test. Deionized (DI) water (Pure & Ultra pure water system, pure ROUP30, Pure Water Co., Namyangju, Korea) and all other chemicals were used as received.
Ametryn
Manufactured by Merck Group
Sourced in United States, Germany
Ametryn is a laboratory instrument produced by Merck Group. It is designed to perform precise analytical measurements and quantifications in a laboratory setting. The core function of Ametryn is to provide accurate and reliable data for research and development purposes.
Automatically generated - may contain errors
Lab products found in correlation
Atrazine, by Merck Group (4 mentions)
Methyl parathion, by Merck Group (2 mentions)
Malathion, by Merck Group (2 mentions)
Prometryn, by Merck Group (2 mentions)
Cyproconazole, by Merck Group (2 mentions)
Flusilazole, by Merck Group (2 mentions)
Pyrimethanil, by Merck Group (2 mentions)
Prometon, by Merck Group (2 mentions)
Famphur, by Merck Group (2 mentions)
Sulfotep, by Merck Group (2 mentions)
Thionazin, by Merck Group (2 mentions)
Azoxystrobin, by Merck Group (2 mentions)
Parathion, by Merck Group (2 mentions)
Simazine, by Merck Group (2 mentions)
Quinoxyfen, by Merck Group (2 mentions)
Metolachlor, by Merck Group (2 mentions)
Absolute ethanol, by Merck Group (1 mentions)
Tetraethyl orthosilicate, by Thermo Fisher Scientific (1 mentions)
Ammonia water, by Merck Group (1 mentions)
Glufosinate, by Merck Group (1 mentions)
6 protocols using ametryn
1
Patterned MIP Films for Selective Analyte Detection
2
Quantitative Chemical Analysis via HPLC
3
High-Purity Pesticide Analysis Protocol
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High purity standards of pesticides (≥99%): Hexazinone, parathion methyl, atrazine, ametryn, captan, carbaryl, as well as, the internal standard triphenyl phosphate were purchased from Sigma Aldrich. The pesticide grade solvents, acetonitrile and methanol, were supplied by Tedia. Every material used in this study was previously washed with ultrapure water (MILLI-Q) and alkaline Extran (Merck 3%).
The samples were filtrated using glass fiber filters (Sartorius Stedim Biotech, Germany) to remove the particulate material. For the microbiological analyzes, the samples were collected directly in the field, without filtration, using sterile flasks and taken directly to the laboratory to undergo analytical procedures. Cartridges used in the extraction were SPE ODS-C18 (Agilent Technologies) containing 1,000 mg of sorbent. Gas argon (5.0–99.999 Vol.%, Air Liquide) was used to evaporate the samples. Stock standard solutions were prepared with mix of pesticides in acetonitrile at concentration of 200 mg/L. The working solutions were prepared in high and low concentrations 100, 50, 20, 10 and 5 mg/L (High concentration) and 2, 1, 0.5 and 0.2 mg L−1 (Low concentration).
The samples were filtrated using glass fiber filters (Sartorius Stedim Biotech, Germany) to remove the particulate material. For the microbiological analyzes, the samples were collected directly in the field, without filtration, using sterile flasks and taken directly to the laboratory to undergo analytical procedures. Cartridges used in the extraction were SPE ODS-C18 (Agilent Technologies) containing 1,000 mg of sorbent. Gas argon (5.0–99.999 Vol.%, Air Liquide) was used to evaporate the samples. Stock standard solutions were prepared with mix of pesticides in acetonitrile at concentration of 200 mg/L. The working solutions were prepared in high and low concentrations 100, 50, 20, 10 and 5 mg/L (High concentration) and 2, 1, 0.5 and 0.2 mg L−1 (Low concentration).
4
Analytical Standards and Solvents for LC-MS/MS
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Ametryn, PESTANAL® analytical standard (purity 98.5%), atrazine-2-hydroxy, PESTANAL® analytical standard (purity 98.1%) and glucose pharmaceutical secondary standard grade (purity 99.8%) were purchased from Sigma-Aldrich (Germany). Ethanol, acetonitrile (ACN), QuEChERS extraction method ingredients and the high purity solvents used during sample preparation for liquid chromatography tandem mass spectrometry (LC-MS/MS) analyzes were purchased from Avantor (Poland) (minimal of 98% purity). All other chemicals and ingredients used in LC-MS/MS analyzes were of high purity grade (minimal of 99.8%) purity and obtained from Sigma-Aldrich (Germany), Serva (Germany) or SCIEX (USA).
5
Analytical Standards for Environmental and Forensic Analysis
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Materials. HPLC-grade acetonitrile, water, hexafluorobenzene (99%) and chlorobenzene (99.9%), iodobenzene (>99%) and fluorobenzene (>99.5%) were obtained from Sigma-Aldrich (Buchs, Switzerland), and toluene (99.85%) and acetone (99.9%) from Acros Organics (Geel, Belgium). Analytical-grade pesticide and drug standards were purchased from Sigma-Aldrich, and were: ametryn, atrazine, prometon, prometryn, propazine, simazine, terbutryn, disulfoton, famphur, parathion, parathion-methyl, phorate, sulfotep, thionazin, triethyl thiophosphate, dimethoate, metolachlor, pyrimethanil, malathion, cyprodinil, flusilazole, cyproconazole, trifloxystrobin, quinoxyfen, tebuconazole, pyriproxyfen, pyridaben, difenoconazole, azoxystrobin, diazepam, cocaine, methadone, desipramine, imipramine, MDMA, ketamine, lidocaine and fentanyl. Phenanthrene-d10, pyrene-d10, and a polycyclic aromatic hydrocarbon mix (CRM 47930) were purchased from Sigma-Aldrich.
6
Pesticide Residue Analysis in Grape Juice
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Materials. HPLC-grade water and acetonitrile and dimethyldichlorosilane (DMDCS, 5% in toluene) were obtained from Sigma-Aldrich (Buchs, Switzerland). PESTANAL© analyticalgrade standards were purchased from Sigma-Aldrich: famphur, parathion, parathion-met, sulfotep, thionazin, ametryn, atrazine, atrazine-D 5 , metolachlor, prometon, prometryn, terbutryn, propazine, simazine, pyrimethanil, cyproconazole, quinoxyfen, flusilazole, trifloxystrobin, azoxystrobin, pyridaben, pyraclostrobin, pyriproxyfen, tebuconazole, cyprodinil, difenoconazole and malathion. Organic grape juice was purchased at local grocery stores in Zurich (Switzerland) and in Waterloo (ON, Canada). PDMS/DVB/PDMS coatings were prepared in-house following the procedure described by Souza-Silva et al. 16 Sample preparation. Individual pesticide standard stock solutions were prepared at a concentration of 5 mg/mL in acetonitrile, and stored at -20 °C. A mix of the pesticides at 100 µg/mL in acetonitrile was prepared from the stock solutions. Diluted solutions used for SPME analysis were prepared in ACN from the mix and were stored at a temperature of 4 °C.
The grape juice samples were spiked with an aliquot of the pesticides standards mixtures, always keeping the total amount of solvent spiked in the matrix below 1% (v:v).
The grape juice samples were spiked with an aliquot of the pesticides standards mixtures, always keeping the total amount of solvent spiked in the matrix below 1% (v:v).
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