The diphenyl-thiocarbazone extraction and spectrophotometry were developed for indirect determination of residual chlorine in water distribution system.
METHODS The gel was prepared by taking mafenide acetate and dyclonine hydrochloride as main components,carboxymethylcellulose sodium and glycerol as base material.
This article described how to determine the content of chloride in the industry potassium hydroxide with the mercuric thiocyanide spectrophotometric method .
Kinetic constant and apparent activation energy of iodine catalytic reaction of ascorbic acid oxidation Naphth Green B have been determined by spectrophotometric method.
The copper ion content is determined with direct spectrophotometry after the engine oil was incinerated,dissolved with acid and developed with Neocuproin-Hydroch lorid Monohydrat.
The paper analyses that flavone's total content measuring of Parthenocissus tricuspidate is extracted by scorbutic extractor and Cohobation method, measured by spectrophotometer.
By using sulpho acid to dissociate samples, using spectrophotometric method to determine micro-chrome in drainage sedimentary is very easy and simple with low cost.
We study the affection for the spectrophotometric method determination of sodium copper chlorophyllin in ratafee of all kinds of coefficiant of variation and obtain valuable results.
The deionizing and deoxidizing water is required by the methylene blue spectrophotometric method in the new national standard to analyze sulfide in water and waste water.
Based on the catalytic effect of thiocyanate on the oxidation of alizarine red by potassium bromate,a new catalytic spectrophotometric method for the determination of trace thiocyanate was developed.
The release patterns of norgestrel in NRID in vivo were simulated after the norgestrel in NRID was dissolved by acetone and the rest of norgestre was determined by Ultraviolet Ray Spectrometer.