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  • Determination of loratadine in human plasma by high-performance liquid chromatographic method with ultraviolet detection.

Determination of loratadine in human plasma by high-performance liquid chromatographic method with ultraviolet detection.

Journal of chromatography. B, Biomedical sciences and applications (2001-06-08)
P K Kunicki
ABSTRACT

A HPLC-UV determination of loratadine in human plasma is presented. After simple liquid-liquid extraction with 2-methylbutane-hexane (2:1) and evaporation of organic phase the compounds were re-dissolved in 0.01 M HCl, evaporated again and finally separated on a Supelcosil LC-18-DB column. The analyses were done at ambient temperature under isocratic conditions using the mobile phase: CH3CN-water-0.5 M KH2PO4-H3PO4 (440:480:80:1, v/v). UV detection was performed at 200 nm with a limit of quantification of 0.5 ng/ml. The precision was found to be satisfactory over the whole range tested (0.5-50 ng/ml) with relative standard deviations of 2.3-6.3 and 5.2-14.1% for intra- and inter-assays, respectively.

MATERIALS
Product Number
Brand
Product Description

Supelco
SUPELCOSIL LC-18-S HPLC Column, 5 μm particle size, L × I.D. 15 cm × 4.6 mm
Supelco
SUPELCOSIL LC-18-S HPLC Column, 5 μm particle size, L × I.D. 25 cm × 2.1 mm
Supelco
SUPELCOSIL LC-NH2-NP HPLC Column, 5 μm particle size, L × I.D. 25 cm × 4.6 mm
Supelco
SUPELCOSIL LC-18-S HPLC Column, 5 μm particle size, L × I.D. 25 cm × 4.6 mm
Supelco
SUPELCOSIL LC-NH2-NP Supelguard Cartridge, 5 μm particle size, L × I.D. 2 cm × 4 mm
Supelco
SUPELCOSIL LC-18 Supelguard Cartridge, 5 μm particle size, L × I.D. 2 cm × 4 mm
Supelco
SUPELCOSIL LC-18-DB HPLC Column, 5 μm particle size, L × I.D. 5 cm × 4.6 mm
Supelco
SUPELCOSIL LC-18-DB HPLC Column, 3 μm particle size, L × I.D. 15 cm × 3 mm
Supelco
SUPELCOSIL LC-18-DB HPLC Column, 3 μm particle size, L × I.D. 3.3 cm × 3 mm
Supelco
SUPELCOSIL LC-18-DB HPLC Column, 5 μm particle size, L × I.D. 25 cm × 4 mm
Supelco
SUPELCOSIL LC-18 Supelguard Cartridge, 5 μm particle size, L × I.D. 2 cm × 2.1 mm
Supelco
SUPELCOSIL LC-18-DB HPLC Column, 5 μm particle size, L × I.D. 30 cm × 4 mm
Supelco
SUPELCOSIL LC-18-DB Supelguard Cartridge, 5 μm particle size, L × I.D. 2 cm × 4 mm
Supelco
SUPELCOSIL LC-18-DB HPLC Column, 3 μm particle size, L × I.D. 3.3 cm × 4.6 mm
Supelco
SUPELCOSIL LC-18 Supelguard Cartridge, 5 μm particle size, L × I.D. 2 cm × 4 mm
Supelco
SUPELCOSIL LC-18-DB Supelguard Cartridge, 5 μm particle size, L × I.D. 2 cm × 4 mm
Supelco
SUPELCOSIL LC-18-DB Supelguard Cartridge, 5 μm particle size, L × I.D. 2 cm × 2.1 mm
Supelco
SUPELCOSIL LC-18 Supelguard Cartridge, 5 μm particle size, L × I.D. 2 cm × 3 mm
Supelco
SUPELCOSIL LC-18-DB HPLC Column, 3 μm particle size, L × I.D. 15 cm × 4.6 mm
Supelco
SUPELCOSIL LC-18-DB HPLC Column, 3 μm particle size, L × I.D. 7.5 cm × 4.6 mm
Supelco
SUPELCOSIL LC-18-DB HPLC Column, 5 μm particle size, L × I.D. 25 cm × 4.6 mm
Supelco
SUPELCOSIL LC-18-DB HPLC Column, 5 μm particle size, L × I.D. 15 cm × 4.6 mm