Direct determination of free sulfur dioxide in wine and dried apple samples by using a gas generating and purging device coupled to a continuous flow (injection) system

The Analyst ◽  
1995 ◽  
Vol 120 (7) ◽  
pp. 2013-2018 ◽  
Author(s):  
Zheng-liang Zhi ◽  
Angel Ríos ◽  
Miguel Valcárcel
Keyword(s):  
Sulfur Dioxide ◽  
Flow Injection ◽  
Continuous Flow ◽  
Direct Determination ◽  
Injection System ◽  
Flow Injection System ◽  
Free Sulfur

Direct determination of therapeutic concentrations of lithium in serum by flow-injection analysis with atomic absorption spectroscopic detection.

1982 ◽  
Vol 28 (3) ◽  
pp. 440-443 ◽  
Author(s):  
B F Rocks ◽  
R A Sherwood ◽  
C Riley
Keyword(s):  
Atomic Absorption ◽  
Flow Injection ◽  
Direct Determination ◽  
Injection System ◽  
Analytical Recovery ◽  
Flow Injection System ◽  
Dilution Effects ◽  
Sodium And Potassium ◽  
Sample Dilution

Abstract In this flow-injection system for direct determination of lithium in serum by atomic absorption spectroscopy, the 10-microL sample is manually injected into a continuously flowing non-segmented stream of de-ionized water, which is pumped, via a dispersion tube, to the spectrometer's nebulizer. Controlled dispersion of the sample zone, before it is introduced into the nebulizer, produces the required sample dilution. Effects of varying the length of the dispersion tube, the flow rate, and the sample size were studied. Analytical readout is obtained, in the form of transient peaks, 5 s after sample injection. It is necessary to include physiological concentrations of sodium and potassium in the standard because each of these cations enhances the lithium absorbance signal. Analytical recovery (98.5 to 101%) and CV (about 2%) are good, and results compare well with those obtained by aspiration of prediluted samples (n = 121, r = 0.99).

Development of a Gas Diffusion Multicommuted Flow Injection System for the Determination of Sulfur Dioxide in Wines, Comparing Malachite Green and Pararosaniline Chemistries

2009 ◽  
Vol 57 (9) ◽  
pp. 3415-3422 ◽  
Author(s):  
Sara M. Oliveira ◽  
Teresa I. M. S. Lopes ◽  
Ildikó V. Tóth ◽  
António O. S. S. Rangel
Keyword(s):  
Sulfur Dioxide ◽  
Malachite Green ◽  
Flow Injection ◽  
Gas Diffusion ◽  
Injection System ◽  
Flow Injection System

Simultaneous and direct determination of urea and creatinine in human urine using a cost-effective flow injection system equipped with in-house contactless conductivity detector and LED colorimeter

2019 ◽  
Vol 1073 ◽  
pp. 54-61 ◽  
Author(s):  
Sumonmarn Chaneam ◽  
Kamparnart Kaewyai ◽  
Thitirat Mantim ◽  
Rasamee Chaisuksant ◽  
Prapin Wilairat ◽  
...  
Keyword(s):  
Flow Injection ◽  
Human Urine ◽  
Direct Determination ◽  
Cost Effective ◽  
Injection System ◽  
Flow Injection System

On-line ion-exchange preconcentration in a flow injection system coupled to capillary electrophoresis for the direct determination of UV absorbing anions

1999 ◽  
Vol 390 (1-3) ◽  
pp. 39-44 ◽  
Author(s):  
Lourdes Arce ◽  
Petr Kuban ◽  
Angel Rı́os ◽  
Miguel Valcárcel ◽  
Bo Karlberg
Keyword(s):  
Capillary Electrophoresis ◽  
Ion Exchange ◽  
Flow Injection ◽  
Direct Determination ◽  
Injection System ◽  
On Line ◽  
Flow Injection System

Electrochemical determination of sulfur dioxide in air samples in closed-loop flow injection system

1987 ◽  
Vol 59 (4) ◽  
pp. 666-670 ◽  
Author(s):  
Angel. Rios ◽  
M. D. Luque de Castro ◽  
Miguel. Valcarcel ◽  
Horacio A. Mottola
Keyword(s):  
Sulfur Dioxide ◽  
Flow Injection ◽  
Closed Loop ◽  
Electrochemical Determination ◽  
Injection System ◽  
Air Samples ◽  
Flow Injection System

Spectrofluorimetric optosensing of aluminium in a flow injection system: determination of aluminium in dialysis fluids and concentrates

The Analyst ◽  
1990 ◽  
Vol 115 (5) ◽  
pp. 575-579 ◽  
Author(s):  
Maria Rosario Pereiro García ◽  
Marta Elena Díaz García ◽  
Alfredo Sanz-Medel
Keyword(s):  
Flow Injection ◽  
Injection System ◽  
Flow Injection System ◽  
Dialysis Fluids

Spectrophotometric determination of low levels of anionic surfactants in water by solvent extraction in a flow injection system

The Analyst ◽  
1988 ◽  
Vol 113 (11) ◽  
pp. 1677-1681 ◽  
Author(s):  
Manuel del Valle ◽  
Julian Alonso ◽  
Jordi Bartrolí ◽  
Isabel Martí
Keyword(s):  
Solvent Extraction ◽  
Spectrophotometric Determination ◽  
Flow Injection ◽  
Anionic Surfactants ◽  
Injection System ◽  
Flow Injection System ◽  
Low Levels
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