High Performance Liquid Chromatography of Metal Chelates

O'Laughlin, Jerome W.

doi:10.1080/01483918408073938

Cited by 68 publications

(16 citation statements)

References 120 publications

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“…. ~ phase or cyano columns, offer several unique advantages over the more conventional silica columns (18). Because polar solvents can be used, bonded packings are capable of separating highly polar metal-containing complexes.…”

Section: Purification Of the Highly Polar Nickel Compounds Found In Wmentioning

confidence: 99%

Molecular Characterization of Nickel and Vanadium Nonporphyrin Compounds Found in Heavy Crude Petroleums and Bitumens

Fish

Reynolds

Gallegos

1987

ACS Symposium Series

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Section: Purification Of the Highly Polar Nickel Compounds Found In Wmentioning

confidence: 99%

Molecular Characterization of Nickel and Vanadium Nonporphyrin Compounds Found in Heavy Crude Petroleums and Bitumens

Fish

Reynolds

Gallegos

1987

ACS Symposium Series

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“…The sec ond ary hydroxyl groups point ing in a clockwise or a coun ter clock wise di rec tion are lo cated at the top open ing of CDs. [13][14][15][16] The pri mary hydroxyl groups at the base are free to ro tate and par tially block the open ing. These unique fea tures of CDs are be lieved to be re spon si ble for many res o lu tions ob served in dif fer ent modes (i.e.…”

Section: Introductionmentioning

confidence: 99%

The HPLC Resolution of Nucleic‐Acid Bases and An a Log Hypoxanthine on R,S‐2‐Hydroxypropyl Derivatized β‐Cyclodextrin Bonded Chiral Stationary Phase Using a Water‐Based Mobile Phase

Chen

2001

J Chinese Chemical Soc

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A HPLC approach using R,S‐2‐hydroxypropyl derivatized β‐cyclodextrin packed column as the stationary phase was developed to resolve five nucleic‐acid bases and an a log hypoxanthine in the reversed‐phase mode. These bases are not only similar in structure but also very close in basicity. However, the resolution can be completed in less than ten minutes and is considered to be better carried out on the R,S‐2‐hydroxypropyl derivatized β‐cyclodextrin phase than that obtained on the native β‐cyclodextrin phase under the same chromatographic conditions. The mechanism involved in the resolution is believed to be inclusion complexation between the analyte and the cavity of cyclodextrin in the reversed‐phase mode. The retention time was found relevant to the size of the analyte. The number of groups on analyte that is available to form hydrogen bonding with hydroxyl groups on CDs also affects the retention scale. Factors of introducing organic acid and base or organic modifier such as methanol to the water‐based mobile phase or increasing their percent ages in the mobile phase decreases the retention time without de grading the resolution significantly.

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“…Most metal ions have been determined by this technique and some reviews have been published. [16][17][18][19] However, scandium has not previously been determined by this technique. Only ionexchange chromatography using HPLC techniques has been used to separate scandium together with rare earth elements.…”

Section: Introductionmentioning

confidence: 99%

Separation and determination of scandium by reversed-phase high-performance liquid chromatography with diacetyl-N,N-bis(4-hydroxybenzoylhydrazone) as a pre-column chelating agent

Uehara¹,

Tanaka²,

Shijo³

1998

Analyst

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High Performance Liquid Chromatography of Metal Chelates

Abstract: Journal of Liquid ChromatographyPublication details, including instructions for authors and subscription information:

Cited by 68 publications

References 120 publications

Molecular Characterization of Nickel and Vanadium Nonporphyrin Compounds Found in Heavy Crude Petroleums and Bitumens

Molecular Characterization of Nickel and Vanadium Nonporphyrin Compounds Found in Heavy Crude Petroleums and Bitumens

The HPLC Resolution of Nucleic‐Acid Bases and An a Log Hypoxanthine on R,S‐2‐Hydroxypropyl Derivatized β‐Cyclodextrin Bonded Chiral Stationary Phase Using a Water‐Based Mobile Phase

Separation and determination of scandium by reversed-phase high-performance liquid chromatography with diacetyl-N,N-bis(4-hydroxybenzoylhydrazone) as a pre-column chelating agent

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