gc-fid and hplc-dad were developed for determination of menadione (mn) and menadione sodium bisulphite (msb). by means of each method, quantitative analysis of msb in commercial pharmaceutical was performed in both direct analysis of msb and analysis of mn by converting msb to mn with sodium carbonate. gc-fid method was carried out on the hp-5 capillary column using nitrogen gas. hplc-dad metho...

GC-FID and HPLC-DAD were developed for determination of menadione (MN) and menadione sodium bisulphite (MSB). By means of each method, quantitative analysis of MSB in commercial pharmaceutical was performed in both direct analysis of MSB and analysis of MN by converting MSB to MN with sodium carbonate. GC-FID method was carried out on the HP-5 capillary column using nitrogen gas. HPLC-DAD metho...

GC-FID and HPLC-DAD were developed for determination of menadione (MN) and menadione sodium bisulphite (MSB). By means of each method, quantitative analysis of MSB in commercial pharmaceutical was performed in both direct analysis of MSB and analysis of MN by converting MSB to MN with sodium carbonate. GC-FID method was carried out on the HP-5 capillary column using nitrogen gas. HPLC-DAD metho...

the purpose of this study was to develop a sensitive and fast microdialysis coupled with high-performance liquid chromatographic (hplc) method for determination of 5-hydroxymethyl-2-furaldehyde (5-hmf) in free-moving rats after i.g. administration of the aqueous extract of crud fructus corni and its processed products of jiuzheng pin (jzp). the concentration of 5-hmf in free-moving rats after i...

This study sought to identify, by means of several analytical methods (GC-MS, HPLC-DAD, CE-DAD, FTIR, and NMR), 4-bromo-2,5-dimethoxyphenethylamine (2C-B), which was found in two sets of tablets obtained from the Swiss black market. Unequivocal identification of 2C-B was only achieved by a combination of mass spectrometric and NMR analysis. Quantitation of 2C-B was performed by HPLC-DAD and CE-...

Crocins in commercial liquid saffron extracts (Saffr’activ®) were identified using high-performance chromatography (HPLC) with a diode array detector (DAD) and mass spectrometry (MS). The impact of storage on the qualities extract studied HPLC-DAD-MS by exposing trans-4-GG crocin to environmental factors. Light temperature induced degradation after only one week. Trans-4-GG was totally hydrolyz...

Analytical methods using high-performance liquid chromatography-diode array detection (HPLC-DAD) and high-performance liquid chromatography/mass spectrometry (HPLC/MS) were developed for the analysis of the following chloroacetanilide herbicide metabolites in water: alachlor ethanesulfonic acid (ESA); alachlor oxanilic acid; acetochlor ESA; acetochlor oxanilic acid; metolachlor ESA; and metolac...

Simple and sensitive methods using high-performance liquid chromatography-diode array detection (HPLC-DAD) and ultraviolet (UV)-spectrophotometry were developed and compared to quantify lychnopholide (LYC) in poly-ε-caprolactone nanocapsules and to study its release kinetics. Both methods were validated concerning their specificity, linearity, limits of detection and quantification, precision, ...

was performed in both direct analysis of MSB and analysis of MN by converting MSB to MN with sodium carbonate. GC-FID method was carried out on the HP-5 capillary column GC-FID and HPLC-DAD methods were developed for determination of menadione (MN) and menadione sodium bisulphite (MSB). By means of each method, quantitative analysis of MSB in commercial pharmaceutical using nitrogen gas. HPLC-D...