The determination of organic halogen by semimicro higher alcohol-metallic sodium method

Semimicro method for the determination of salicylate levels in blood.

WIDE VARIETY OF METHODS are available for the determination of salicylate in body fluids and tissues. These range from the spot test type used at the patients’ bedside to the organic solvent partition methods employed in more exact studies. In recent years, the method of Brodie et al. (1) involving extraction with ethylene chloride has gained widespread acceptance. The method commonly employs 1...

A new simple semimicro method for colorimetric determination of urea.

multiwavelength pectrophotometric determination of stability constants of 4-(2– thiazolylazo) resorcinol (tar) with la3+, y3+ and th4+ in organic-water mixed solvents by chemometrics method & simultaneous spectrophotometric determination of lead, copper and nickel using xylenol orange by partial least squares calibration method

تشکیل کمپلکس های tarبا یون های لانتانیم, ایتریم و توریم در دمای 25 درجه، قدرت یونی ثابت 0.1 مولار و در ph ثابت در مخلوط حلال های اتانول – آب و استونیتریل – آب با استفاده از روش های اسپکتروفوتومتری مورد بحث و بررسی قرار گرفت. داده های اسپکتروفوتومتری با استفاده از نرم افزار squad پردازش شدند تا ثابت های تشکیل کمپلکس اندیکاتور – فلز را محاسبه کند. نتایج نشان می دهد که درصد حلال آلی در مخلوط حلال ...

Semimicro determination of cellulose in biological materials.

The quantitative determination of cellulose in biological materials presents some difficult problems. The moisture con~ent of cellulose varies with the relative humidity, so that accurate analyses require that moisture determinations be made under carefully standardized conditions. Cellulose ordinarily occurs in association with lignin, polyuronide hemicelluloses, and xylan cellulosans. Matrone...

A Semimicro Modification of the Karr Urea Determination Method Using the Somogyi Serum Filtrate.

B ECAUSE of the pressing need for conserving both the patient’s blood and laboratory time, an attempt has been made to modify the Karr urea method (1) for semimicro amounts of Somogyi filtrate (2). Since this serum filtrate was already being used for glucose in our clinical laboratory, the saving of time and material which such a method would bring-if accurate enough for clinical purposes-was o...