id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
iajs-112	Humedy, Israa T.; Ali, Ismael M.	Spectrophotometric Determination of Sulfathiazole Using 2,4 –dinitrophenylhydrazine as Coupling Reagent	2017	13	.pdf	application/pdf	4491	224	62	Figure (4): Calibration curve for determination STHZ by oxidative coupling with 2,4-DNPH reagent. Preliminary investigations A 1 ml of 2,4- DNPH reagent is added to 1.5 ml of standard STHZ solution in the presence of 1 ml of potassium periodate solution in basic medium using 0.5 ml of 1.0 M sodium hydroxide then diluted with distilled water in a 25 ml volumetric flask to produce an orange color product.	cache/iajs-112.pdf	txt/iajs-112.txt