Development and application of an integrated, high-speed, computerized hydrodynamic chromatograph

McGowan, G.R.; Langhorst, Martin A.

doi:10.1016/0021-9797(82)90124-2

Cited by 52 publications

(36 citation statements)

References 13 publications

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“…A HDC column is packed with non-porous beads building up flow channels in which particles are separated by flow velocity and the velocity gradient across the particle. Therefore, larger particles elute faster from the column than smaller ones (McGowan and Langhorst 1982). The non-porous beads considerably reduce the risk of solid-phase interactions compared to the porous packaging in a SEC column.…”

Section: Chromatography and Related Techniquesmentioning

confidence: 99%

Detection and characterization of engineered nanoparticles in food and the environment

Tiede

Boxall

Tear

et al. 2008

Food Additives & Contaminants: Part A

646

360

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Nanotechnology is developing rapidly and, in the future, it is expected that increasingly more products will contain some sort of nanomaterial. However, to date, little is known about the occurrence, fate and toxicity of nanoparticles. The limitations in our knowledge are partly due to the lack of methodology for the detection and characterisation of engineered nanoparticles in complex matrices, i.e. water, soil or food. This review provides an overview of the characteristics of nanoparticles that could affect their behaviour and toxicity, as well as techniques available for their determination. Important properties include size, shape, surface properties, aggregation state, solubility, structure and chemical composition. Methods have been developed for natural or engineered nanomaterials in simple matrices, which could be optimized to provide the necessary information, including microscopy, chromatography, spectroscopy, centrifugation, as well as filtration and related techniques. A combination of these is often required. A number of challenges will arise when analysing environmental and food materials, including extraction challenges, the presence of analytical artifacts caused by sample preparation, problems of distinction between natural and engineered nanoparticles and lack of reference materials. Future work should focus on addressing these challenges.

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Section: Chromatography and Related Techniquesmentioning

confidence: 99%

Detection and characterization of engineered nanoparticles in food and the environment

Tiede

Boxall

Tear

et al. 2008

Food Additives & Contaminants: Part A

646

360

View full text Add to dashboard Cite

show abstract

“…The column is packed with nonporous microparticles, and separation is achieved by flow velocity and the velocity gradient across them [35].…”

Section: Chromatographic Methodsmentioning

confidence: 99%

Methods for separation, identification, characterization and quantification of silver nanoparticles

Liu

Yin

et al. 2012

TrAC Trends in Analytical Chemistry

144

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“…The column is packed with nonporous microparticles, and separation is achieved by flow velocity and the velocity gradient across them [39]. Larger particles, which cannot fully access slowflow regions near the conduit walls, are transported faster than small ones, resulting in shorter retention time.…”

Section: Chromatographic Methodsmentioning

confidence: 99%

Separation and Determination of Silver Nanoparticles

Zhou

Liu

2015

Silver Nanoparticles in the Environment

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The accurate analysis of silver nanoparticles (AgNPs) in complicated environmental and biological matrix is the premise for the assessment of AgNP risks. In the past few decades, a myriad of methods have been developed for the concentration and determination of AgNPs. In this chapter, methodologies for the separation, characterization, and quantification of AgNPs are introduced, and the advantages and shortcomings of each technique are also discussed. In most cases, multiple schemes are often needed to get comprehensive information of the analytes. To meet the ultra-trace detection of AgNPs in the environment, techniques with higher resolution and sensitivity are required.

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Development and application of an integrated, high-speed, computerized hydrodynamic chromatograph

Cited by 52 publications

References 13 publications

Detection and characterization of engineered nanoparticles in food and the environment

Detection and characterization of engineered nanoparticles in food and the environment

Methods for separation, identification, characterization and quantification of silver nanoparticles

Separation and Determination of Silver Nanoparticles

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