Semimicro Quantitative Organic Analysis

Developments in Quantitative Organic Ultramicro Elementary Analysis

Numerous principles for the mineralization of samples and for the measurement of the elements have been tried since the days of Liebig, Dumas, Dennstedt and Pregl. Attempts to develop accurate and reliable ultramicro methods have been successful only in recent years. Almost absolutely quantitative recovery of the analyte from the mineralization process, freedom from risk of contamination, and v...

Quantitative Analysis of Electron Beam Damage in Organic Thin Films

In transmission electron microscopy (TEM) the interaction of an electron beam with polymers such as P3HT:PCBM photovoltaic nanocomposites results in electron beam damage, which is the most important factor limiting acquisition of structural or chemical data at high spatial resolution. Beam effects can vary depending on parameters such as electron dose rate, temperature during imaging, and the p...

Identification and quantitative analysis of urinary organic acids

KODAMA, H., OKADA, S., INUI, K., YUTAKA, T. and YABUUCHI, H. Studies on ƒ¿-Ketoglutaric Aciduria in Type I Glycogenosis. Tohoku J. exp. Med., 1980, 131 (4), 347-353 Urinary excretion of the organic acids in patients with type I and III glycogenosis was investigated. In all patients with type I glycogenosis, urinary ƒ¿-ketoglutarate concentration was about 10 times the normal value. ƒ¿Ketoglutar...

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 new simple semimicro method for colorimetric determination of urea.