Indigo is one of the most important dyes in the textile industry. The control of the indigo concentration in dyeing liquors and effluents is an important tool to ensure the reproducibility of the dyed fabrics and also to establish the efficiency of the wastewater treatment. In this work, three analytical methods were studied and validated with the aim to select a reliable, fast and automated me...

Rapid photometric assessment of iron in blood plasma and serum by a simple procedure after the extraction of iron(II) complex with 1-nitroso-2-naphthol in the micellar phase of a nonionic surfactant at the cloud point upon heating (pH range is 4.5-6.3) is proposed. The procedure trueness was verified using a standard reference protocol using bathophenanthroline. The advantages of the procedure ...

To develop and validate HPLC UV-visible spectroscopy methods for the determination of Thymoquinone (TMQ) content in different solvent extracts N. sativa L. seed. The evaluation free radical scavenging effect TMQ was investigated. Extraction done by adding 20 mL (hexane, methanol, ethanol, ethyl acetate, water) to 1 g blackseed a conical flask, respectively. mixtures were then incubated water ba...