Consecutive determination of nitrogen, phosphorus and calcium in animal feeds on a single channel flow injection analyzer with a common analytical manifold

1982 ◽  
Vol 311 (1) ◽  
pp. 23-26 ◽  
Author(s):  
W. D. Basson
Keyword(s):  
Channel Flow ◽  
Flow Injection ◽  
Single Channel ◽  
Animal Feeds ◽  
Nitrogen Phosphorus

scholarly journals Flow Injection Spectrophotometric Determination of Copper, Iron, Manganese, and Zinc in Animal Feeds Using a Common Manifold

2000 ◽  
Vol 83 (6) ◽  
pp. 1293-1298 ◽  
Author(s):  
Jing-Fu Liu ◽  
Gui-Bin Jiang ◽  
Ying-Di Feng
Keyword(s):  
Flow Injection ◽  
Simple Procedure ◽  
Xylenol Orange ◽  
Low Cost ◽  
Injection System ◽  
Animal Feeds ◽  
Flow Injection System ◽  
Iron Manganese ◽  
Determination Of Copper

Abstract A rapid and simple procedure was developed for the determination of copper, iron, manganese, and zinc in animal feeds using an identical flow injection spectrophotometric manifold but different chromogenic reagents and different detection wavelengths. Bis(cyclohexanone)oxalydihydrazone, formaldoxime, 1,10-phenanthroline, and xylenol orange were adopted as chromogenic reagents for Cu, Mn, Fe, and Zn, respectively. Detection conditions such as manifold parameters, buffer pH, reagent concentration, temperature, and acidity of sample solution were optimized. Analytical characteristics of the method and interference of metal ions commonly present in feeds were studied. By changing the reagents and detection wavelengths, which can be done quickly, the proposed low cost flow injection system can determine Cu, Fe, Mn, or Zn in the range of 0.5–10 mg/L with a sampling throughput of 120/h.

scholarly journals A simple flow-injection method for the determination of blood glucose using a Technicon immobilized enzyme coil

1989 ◽  
Vol 11 (2) ◽  
pp. 87-88 ◽  
Author(s):  
Sveinbjörn Gizurarson
Keyword(s):  
Blood Glucose ◽  
Detection Limit ◽  
Flow Injection ◽  
Immobilized Enzyme ◽  
Single Channel ◽  
Glucose Solution ◽  
Injection System ◽  
Flow Injection System ◽  
Simple Flow

The applicability of a single-channel flow-injection system with immobilized enzyme coil (Technicon) and UV detection to the determination of glucose is described. The method was used for a pure glucose solution and for serum. The detection limit was 0.10 mM, the rate of determination was 20-40 per hour and the precision was satisfactory. The system is very simple and practical when many analysis are to be determined periodically.

Rapid determination of nitrogen, phosphorus and potassium in fertilisers by flow injection analysis

The Analyst ◽  
1977 ◽  
Vol 102 (1219) ◽  
pp. 714 ◽  
Author(s):  
E. H. Hansen ◽  
F. J. Krug ◽  
Animesh K. Ghose ◽  
J. Růžička
Keyword(s):  
Flow Injection ◽  
Flow Injection Analysis ◽  
Rapid Determination ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

Slurries Introduction in Flow Injection Atomic Absorption Spectroscopic Analysis of Sewage Sludges

1990 ◽  
Vol 73 (3) ◽  
pp. 389-393
Author(s):  
R Martinez-Avila ◽  
V Carbonell ◽  
M De la guardia ◽  
A Salvador
Keyword(s):  
Atomic Absorption ◽  
Flow Injection ◽  
Single Channel ◽  
Limit Of Detection ◽  
Flame Atomic Absorption Spectroscopy ◽  
Flame Atomic Absorption ◽  
Copper Manganese ◽  
Determination Of Copper ◽  
Better Than

Abstract The direct introduction of slurries in flow Injection-flame atomic absorption spectroscopy has been studied using a single-channel manifold. The influence of flow Injection parameters on the sensitivity and accuracy of this procedure has been established. A method has been developed for the determination of copper, manganese, and lead In sewage sludge where batch digestion of the samples In a microwave oven is carried out before dilution. Both sensitivity and limit of detection of the flow Injection analysis procedure are adequate for the analysis of actual samples (the limit of detection was 0.06, 0.05, and 0.3 ppm for copper, manganese, and lead, respectively). The accuracy of the proposed method, determined from the analysis of 2 reference samples from the European Community Bureau, is better than that obtained by the continuous aspiration of the samples.

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