Application of solid phase extraction spectrophotometry with SBDR in analysis of leadin tobacco;

Determination of lead in environmental sample with 2-hydroxynaphthal-1-methylenerodanine by solid phase extraction spectrophotometry;

Study on determination of trace platinum in cyanide residue by microwave digestion and solid phase extraction spectrophotometry;

Determination of fleroxacin in its preparations by the first derivative spectrophotometry;

Two methods for the rapid determination of 10-HDA in royal jelly with the def-frential spectrophotometry and the first derivative spectrophotometry are presented.

OBJECTIVE:To improve the methods to determine the contents of ribavirin in ribavirin eye drop METHODS:First order derivative spectrophotometry was used to determined by UV at 222 nm and Δλ 2 nm RESULTS:The average recovery for this method was 99 9%( n=5 ),and the RSD was 0 846% CONCLUSION:The method was simple and accurate,it can be used to determine the contents of ribabirin in eye drop

Quantitative determination of VitB_2 in the compound yolk emulsion by the first order derivative spectrophotometry;

Method: In the case of ambient temperature (25℃) and body temperature (37℃) the change of content was within 8h after the compatibility investigated of Cephathiamidine and Peritoneal Dialysis Solution by the First Order Derivative Spectrophotometry,and the aspect was observed, Ph was determined too.

Extraction spectrophotometric method for determination of lomefloxacin is proposed.