scholarly journals A novel approach to non-segmented flow analysis: Part 3. Nitrate, nitrite and ammonium in waters

1988 ◽  
Vol 10 (4) ◽  
pp. 192-197 ◽  
Author(s):  
D. J. Malcolme-Lawes ◽  
C. Pasquini
Keyword(s):  
Flow Injection ◽  
Flow Injection Analysis ◽  
Continuous Flow ◽  
High Performance ◽  
Flow Analysis ◽  
Ammonium Ion ◽  
Sequential Determination ◽  
Novel Approach ◽  
Wide Range

A high-performance continuous-flow analyser is used for the analysis of nitrate, nitrite and ammonium ion in potable waters. The results demonstrate that (1) the analyser allows the sequential determination of a number of analytes without requiring modification to the manifold; (2) the use of programmed slicing of the reaction mixture allows a wide range of analyte concentrations to be handled; and (3) that the sensitivity achieved compares favourably with the best available from conventional flow-injection analysis. The limits of detection were found to be 5 ppb for NH4+, 30 ppb for NO3-, and 4 ppb for NO2-.

scholarly journals A novel approach to non-segmented flow analysis. Part 2. A prototype high-performance analyser

1988 ◽  
Vol 10 (1) ◽  
pp. 25-30 ◽  
Author(s):  
D. J. Malcolme-Lawes ◽  
C. Pasquini
Keyword(s):  
Continuous Flow ◽  
High Performance ◽  
Standard Procedure ◽  
Flow Analysis ◽  
Ammonium Ion ◽  
Principal Characteristics ◽  
Novel Approach ◽  
The Government ◽  
Government Chemist

A high-performance continuous flow analyser is described, based on gas pressure driven carrier and reagents controlled by computer switched solenoid valves. The principal characteristics of the analyser are discussed and examples of its performance are provided in the form of results obtained using a standard procedure for the determination of Cr(VI). The system was also tested in use with real samples using an ammonium ion analysis on potable and effluent water samples, and the results compared with those obtained using a segmented continuous flow method operated at the Laboratory of the Government Chemist.

Determination of ammonium ion in rainwater and fogwater by flow injection analysis with chemiluminescence detection

1993 ◽  
Vol 65 (23) ◽  
pp. 3489-3492 ◽  
Author(s):  
Xincheng. Hu ◽  
Norimichi. Takenaka ◽  
Shiro. Takasuna ◽  
Masaru. Kitano ◽  
Hiroshi. Bandow ◽  
...  
Keyword(s):  
Flow Injection ◽  
Flow Injection Analysis ◽  
Ammonium Ion ◽  
Chemiluminescence Detection

scholarly journals Assessment of long distance chasing photometer (NAG-ADF-300-2) by estimating the drug atenolol with ammonium molybdate via continuous flow injection analysis

2020 ◽  
Vol 17 (1) ◽  
pp. 0078
Author(s):  
Elham N. Mezaal N. Mezaal
Keyword(s):  
Flow Injection ◽  
Flow Injection Analysis ◽  
Continuous Flow ◽  
Classical Method ◽  
Standard Addition ◽  
Calibration Graph ◽  
Ammonium Molybdate ◽  
Long Distance ◽  
Optimum Parameters

     Atenolol was used with ammonium molybdate to prove the efficiency, reliability and repeatability of the long distance chasing photometer (NAG-ADF-300-2) using continuous flow injection analysis. The method is based on reaction between atenolol and ammonium molybdate in an aqueous medium to obtain a dark brown precipitate. Optimum parameters was studied to increase the sensitivity for developed method. A linear range for calibration graph was 0.1-3.5 mmol/L for cell A and 0.3-3.5 mmol/L for cell B, and LOD 133.1680 ng/100 µL and 532.6720 ng/100 µL for cell A and cell B respectively with correlation coefficient (r) 0.9910 for cell A and 0.9901 for cell B, RSD% was lower than 1%, (n=8) for the determination of atenolol at concentration (0.5, 0.7 and 5) mmol/L respectively. The results were compared with classical method UV-Spectrophotometric at λ max=270 nm using the standard addition method via the use of t-test, at 95% confidence level. The comparison of data explain that long distance chasing photometer (NAG-ADF-300-2) is the choice with excellent extended detection and wide application.                                                                                                       

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