scholarly journals Continuous production of uniform chitosan beads as hemostatic dressings by a facile flow injection method

2020 ◽  
Vol 8 (35) ◽  
pp. 7941-7946
Author(s):  
Boxuan Li ◽  
Juan Wang ◽  
Qin Gui ◽  
Hu Yang

In this work, we developed a facile flow injection method to fabricate chitosan beads of uniform size in a continuous manner and assessed their properties as hemostatic dressings.

2000 ◽  
Vol 49 (1) ◽  
pp. 59-64 ◽  
Author(s):  
Hiroki OHURA ◽  
Toshihiko IMATO ◽  
Ikuo MATSUO ◽  
Sumio YAMASAKI

1991 ◽  
Vol 24 (4) ◽  
pp. 581-588 ◽  
Author(s):  
M. Yaqoob ◽  
M. Anwar ◽  
A. S. Masood ◽  
M. Masoom

2018 ◽  
Vol 33 (2) ◽  
pp. 47
Author(s):  
Orlando Fatibello-Filho ◽  
Heberth Juliano Vieira

A spectrophotometric flow injection method for the determination of paracetamol in pharmaceutical formulations is proposed. The procedure was based on the oxidation of paracetamol by sodium hypochloride and the determination of the excess of this oxidant using o-tolidine dichloride as chromogenic reagent at 430 nm. The analytical curve was linear in the paracetamol concentration range from 8.50 x 10-6 to 2.51 x 10-4 mol L-1 with a detection limit of 5.0 x 10-6 mol L-1. The relative standard deviation was smaller than 1.2% for 1.20 x 10-4 mol L-1 paracetamol solution (n = 10). The results obtained for paracetamol in pharmaceutical formulations using the proposed flow injection method and those obtained using a USP Pharmacopoeia method are in agreement at the 95% confidence level.


1990 ◽  
Vol 68 (10) ◽  
pp. 1750-1756 ◽  
Author(s):  
Paul M. Shiundu ◽  
Adrian P. Wade ◽  
S. B. Jonnalagadda

Precise and accurate knowledge of peroxydisulfate ion concentration is critical in industrial polymer production, where it is extensively used as an activator. Its ability to oxidize in either acidic, neutral, or alkali media also makes it widely applicable in many other areas of chemistry.In this paper we present an optimized spectrophotometric flow injection method for determination of peroxydisulfate. The analyte oxidizes o-dianisidine to form a stable product which has a convenient absorbance maximum at 450 nm. This provides a simple and sensitive alternative to present methods which are more costly, tedious, or complex. Keywords: spectrophotometric method, peroxydisulphate.


Sign in / Sign up

Export Citation Format

Share Document