Sensitive determination of diquat by a kinetic method using the stopped-flow mixing technique

The Analyst ◽  
2000 ◽  
Vol 125 (12) ◽  
pp. 2372-2375 ◽  
Author(s):  
Tomás Pérez-Ruiz ◽  
Carmen Martínez-Lozano ◽  
Virginia Tomás ◽  
José Fenoll
Keyword(s):  
Kinetic Method ◽  
Stopped Flow ◽  
Flow Mixing ◽  
Sensitive Determination

Chemiluminescence Determination of Glucose, Fructose and their Mixture by the Stopped-Flow Mixing Technique

2003 ◽  
Vol 141 (1-2) ◽  
pp. 73-78 ◽  
Author(s):  
Tomás Pérez-Ruiz ◽  
Carmen Martínez-Lozano ◽  
Virginia Tomás ◽  
José Fenoll
Keyword(s):  
Stopped Flow ◽  
Flow Mixing

Evaluation of a discrete samples/stopped-flow mixer system for equilibrium and kinetic analyses.

1977 ◽  
Vol 23 (7) ◽  
pp. 1230-1237 ◽  
Author(s):  
H L Pardue ◽  
H T Gaw ◽  
G E Mieling ◽  
V L Mathews ◽  
D M Fast ◽  
...  
Keyword(s):  
Kinetic Method ◽  
Rapid Change ◽  
Reliable Data ◽  
Stopped Flow ◽  
Sampling System ◽  
Flow Mixing ◽  
Instrumental System ◽  
Computer Controlled ◽  
Fast Kinetic ◽  
Slow Kinetic

Abstract This paper describes the evaluation of a system for computer-controlled discrete sampling and stopped-flow mixing for equilibrium and kinetic determinations of several sorts of analytes in human serum. The instrumental system features a wash-out sampling system that permits rapid change-over from one sample and (or) reagent type to another, and a mixing-measurement system that can provide reliable data as soon as 10 ms after reagent and sample are mixed. Examples discussed include equilibrium procedures for glucose and cholesterol, slow kinetic procedures for glucose and lactate dehydrogenase, and a fast kinetic method for thiocyanate. The regression equation for all stopped-flow results (n = 114) vs. results by conventional methods is y = (103 +/- 0.01)x - (0.016 +/- 0.019) for numerical values of y between 0.3 and 3.0. The correlation coefficient for these data was 0.991. These results demonstrate that the stopped-flow method is a viable analytical approach for equilibrium, slow kinetic, and fast kinetic determinations that require measurement times shorter than 0.1 s.

Simultaneous kinetic-photometric determination of imipramine and desipramine by stopped-flow mixing technique

1993 ◽  
Vol 283 (1) ◽  
pp. 471-475 ◽  
Author(s):  
Lourdes de la Peña ◽  
Agustina Gómez-Hens ◽  
Dolores Pérez-Bendito
Keyword(s):  
Photometric Determination ◽  
Stopped Flow ◽  
Flow Mixing

Sensitive determination of periodate and tartaric acid by stopped-flow chemiluminescence spectrometry

The Analyst ◽  
1994 ◽  
Vol 119 (8) ◽  
pp. 1819-1824 ◽  
Author(s):  
Abaji Gaikwad ◽  
Manuel Silva ◽  
Dolores Pérez-Bendito
Keyword(s):  
Tartaric Acid ◽  
Stopped Flow ◽  
Sensitive Determination

A stopped-flow clinical analyzer in which immobilized-enzyme reaction loops are used.

1977 ◽  
Vol 23 (6) ◽  
pp. 1033-1036 ◽  
Author(s):  
M D Joseph ◽  
D J Kasprzak ◽  
S R Crouch
Keyword(s):  
Immobilized Enzyme ◽  
Enzymatic Reaction ◽  
Enzyme Reaction ◽  
Fixed Time ◽  
Stopped Flow ◽  
Good Precision ◽  
Indicator Reaction ◽  
Flow Mixing ◽  
Kinetic Mode

Abstract A stopped-flow clinical analyzer is described that makes use of a reaction loop containing immobilized enzyme(s) for the determination of the analyte/substrate. The analyzer has been evaluated by determining glucose with immobilized glucose oxidase. The stopped-flow mixing system was constructed at a current cost of less than $500. The analyzer separates the enzymatic reaction from a followup, spectrophotometric indicator reaction. This separation allows the enzymatic reaction to be used in either a fixed-time, kinetic mode or in an equilibrium mode. Likewise, the indicator reaction can be used in either mode. Results for glucose in blood serum indicate that good precision and accuracy can be obtained.

Fluorimetric determination of total ascorbic acid by a stopped-flow mixing technique

The Analyst ◽  
2001 ◽  
Vol 126 (8) ◽  
pp. 1436-1439 ◽  
Author(s):  
Tomás Pérez-Ruiz ◽  
Carmen Martínez-Lozano ◽  
Virginia Tomás ◽  
José Fenol
Keyword(s):  
Ascorbic Acid ◽  
Stopped Flow ◽  
Fluorimetric Determination ◽  
Flow Mixing

Spectrofluorimetric determination of naltrexone by a kinetic method using the stopped-flow technique

2003 ◽  
Vol 495 (1-2) ◽  
pp. 249-259 ◽  
Author(s):  
José A Murillo Pulgarı́n ◽  
Luisa F Garcı́a Bermejo ◽  
José L Garrido Lara
Keyword(s):  
Kinetic Method ◽  
Stopped Flow ◽  
Spectrofluorimetric Determination
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