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Determination of 17 types of phthalates in drinking water by solid-phase extraction coupled with multiple reaction monitoring of gas chromatography-mass spectrometry
Published 2025-01-01“…Methods: One litre of commercially available bottled water was purified using an HLB solid-phase extraction column, and was eluted with ethyl acetate, dichloromethane and average methanol. …”
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Structural Characterization and Immunomodulatory Activity of Polysaccharides from Polygonatum sibiricum Prepared with Deep Eutectic Solvents
Published 2023-01-01“…Subsequently, DPSP was subjected to DEAE-Sepharose Fast Flow and Sephadex G-100 column for further purification (DPSP-3). Structural characterization and immunomodulatory activity in RAW264.7 cells were performed. …”
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6364
Development and Validation of HPLC Method for the Simultaneous Determination of Five Food Additives and Caffeine in Soft Drinks
Published 2016-01-01“…Stationary phase was Inertsil OctaDecylSilane- (ODS-) 3V reverse phase column (250 × 4.6 mm, 5 μm) dimensions. The detection was performed at 230 nm. …”
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6365
Hydrophilic Interaction Liquid Chromatography-Tandem Mass Spectrometry Analysis of Fosetyl-Aluminum in Airborne Particulate Matter
Published 2018-01-01“…The chromatographic separation was achieved using a polymeric column based on hydrophilic interaction in step elution with water/acetonitrile, whereas the mass spectrometric detection was performed in negative electrospray ionization. …”
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High-Speed Counter-Current Chromatography in Separation and Identification of Saponins from Beta vulgaris L. Cultivar Red Sphere
Published 2020-02-01“…The flow rate of the mobile phase was 3 mL/min and the column rotation speed was 860 rpm. The retention of the stationary phase was 47%. …”
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Material Effects on Tangent Modulus of Steel Square Hollow Section
Published 2023-05-01“…The kind of mild steel, the Bauschinger effect because of strain reversal and strain ageing are indicated to affect significantly the tangent modulus of elasticity. Stub column specimens made from a material that has been pre-stretched in tension have a significantly lower tangent modulus of elasticity than those specimens made from as-received material; the reduction is caused by the Bauschinger effect and a resulting reduction in tangent modulus and yield strength. …”
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6377
Air Pollution Variation During COVID-19 Pandemic Using Satellite and On-site Measurement Data in Six Provinces in Iran
Published 2024-12-01“…The results revealed that the mean ratio of NO2 and SO2 has not varied drastically in the considered provinces. These column concentration ratios for all months were within the range of +2%(Tehran) to -6% (Tabriz). …”
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6379
Comparison and Selection of Channel Desilting Schemes Based on Hydrodynamic Models
Published 2025-01-01Get full text
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6380
Research Progress of Methods of Initial Water Rights Allocation in River Basins
Published 2022-01-01Get full text
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