We have investigated the application of ultrasound modulated coherent light for quantitative determination of the ratio of dye concentrations and total concentration of absorbers in a blood vessel-mimicking sample. A 3-mm-diam tube containing the mixture of dyes inside an Intralipid-based gel with optical properties similar to tissue was interrogated by two different laser wavelengths in combin...

The present study investigates a quantitative high performance thin layer chromatographic (HPTLC) method for chlorogenic acid and hyperoside determination from berry extracts. Chlorogenic acid and hyperoside were extracted using a methanol and water mixture and separated on a HPTLC 60F254 silica gel plates with ethyl acetate, acetic acid, formic acid and water 10:1.1:1.1:2.3 (v/v/v/v) as mobile...

Coated wire lithium ion selective electrode was fabricated using lithium ionophore-VI, 2-nitrophenyl octyl ether (NPOE) and potassium tetrakis(p-chlorophenyl)borate (KTpClPB) on platinum wire. Lithium ion selective electrode was giving Nernstian response from 10 -1 M to 10 -4 M with a detection limit of 3x10 -5 M. The calibration slope of this lithium ion selective electrode was found to be 58....

A sensitive and accurate high-performance thin layer chromatography (HPTLC) method has been developed to determine the quantity of 6-gingerol in the methanolic extract of Zingiber officinale containing dietary supplements, teas and commercial creams. 6-gingerol was separated on aluminumbacked silica gel 60 F254 plates with n-hexane:ethyl acetate 40:60 (%, v/v) as mobile phase. A compact band wa...

A new simple, precise and selective high performance thin layer chromatographic (HPTLC) method has been developed and validated for simultaneous determination of ondansetron hydrochloride and omeprazole in tablets. Identification and determination were performed on 20 cm × 10 cm aluminium-backed TLC plates, coated with 0.2 mm layers of silica gel 60 F254, previously washed with methanol. Ethyl ...

A simple, sensitive and rapid high performance thin layer chromatographic (HPTLC) method has been developed and validated for quantitative estimation of Venlafaxine hydrochloride in bulk and in capsule formulation. The drug was chromatographed on silica gel 60F254TLC plate using methanol: ammonia (4.5:0.5v/v) as mobile phase. Densitometric scanning of was carried out at 224 nm and resolution wa...

A simple high-performance thin-layer chromatographic (HPTLC) method for separation and quantitative analysis of losartan potassium, atenolol, and hydrochlorothiazide in bulk and in pharmaceutical formulations has been established and validated. After extraction with methanol, sample and standard solutions were applied to prewashed silica gel plates and developed with toluene–methanol–triethylam...

The electrochemical behavior of lansoprazole (LNS) was investigated at a glassy carbon electrode (GCE) and the GCE modified by a gel containing multiwalled carbon nanotubes (MWCNTs) and a room-temperature ionic liquid (RTIL) of 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF6) in 0.10 M phosphate buffer solution of pH 6.8. It was found that an irreversible anodic oxidation peak with an ...

Two new, rapid, precise, accurate and specific chromatographic methods were described for the simultaneous determination of olmesartan medoxomil and hydrochlorothiazide in combined tablet dosage forms. The first method was based on reversed phase liquid chromatography using an Eurosphere 100 RP C18 column (250 x 4.6 mm ID, 5 mum). The mobile phase was methanol-0.05% o-phosphoric acid (60:40 v/v...

AIM Described in this manuscript is the first ever reported, new, simple, high-performance thin-layer chromatographic method for the determination of mycophenolate mofetil in bulk and tablet dosage form. MATERIALS AND METHODS The drug was separated on aluminum plates precoated with silica gel 60 F254 with toluene, acetone, and methanol in the ratio of 6:2:2 (v/v/v) as the mobile phase. Quanti...