Stopped-flow injection simultaneous determination of phosphate and silicate using molybdenum blue

Talanta ◽  
2002 ◽  
Vol 58 (6) ◽  
pp. 1319-1326 ◽  
Author(s):  
K Grudpan
Keyword(s):  
Simultaneous Determination ◽  
Flow Injection ◽  
Stopped Flow ◽  
Molybdenum Blue

Simultaneous Determination of Protein (Nitrogen), Phosphorus, and Calcium in Animal Feedstuffs by Multichannel Flow-Injection Analysis

1983 ◽  
Vol 66 (3) ◽  
pp. 718-726
Author(s):  
Jacobus F Van Staden
Keyword(s):  
Simultaneous Determination ◽  
Flow Injection ◽  
Protein Nitrogen ◽  
Molybdenum Blue ◽  
Time Space ◽  
Wide Range ◽  
Manual Methods ◽  
Animal Feedstuffs ◽  
H Protein

Abstract A 3-channel flow-injection procedure was developed, which enables the simultaneous determination of protein, phosphorus, and calcium in a wide range of animal feeds from a single digestion. Samples are digested with a block digestor, diluted, and analyzed at a rate of 82 samples/h. Protein (nitrogen) as ammonia is determined colorimetrically by the indophenol method. Phosphorus and calcium are determined by measuring the absorbances of the molybdenum blue and calcium-cresolphthalein complexes at 660 and 580 nm, respectively. Protein is determined in the range from 0 to 75%, phosphorus in the range from 0 to 6%, and calcium in the range from 0 to 6%. The results obtained do not differ significantly from those obtained by proven manual methods, and considerable time, space, and reagents are saved.

Simultaneous determination of total and free calcium in milk by flow injection

The Analyst ◽  
1990 ◽  
Vol 115 (5) ◽  
pp. 605 ◽  
Author(s):  
Jacobus F. van Staden ◽  
Ancel van Rensburg
Keyword(s):  
Simultaneous Determination ◽  
Flow Injection ◽  
Free Calcium

Prussian Blue-Based Thin-Layer Flow-Injection Multibiosensor for Simultaneous Determination of Glucose and Lactate

2018 ◽  
Vol 73 (5) ◽  
pp. 216-222
Author(s):  
D. V. Vokhmyanina ◽  
E. E. Karyakina ◽  
E. A. Andreev ◽  
A. A. Karyakin
Keyword(s):  
Thin Layer ◽  
Prussian Blue ◽  
Simultaneous Determination ◽  
Flow Injection ◽  
Layer Flow
Sign in / Sign up

Export Citation Format

Share Document