A colorimetric method for the determination of potassium and its application to the analysis of soil extracts

1950 ◽  
Vol 1 (11) ◽  
pp. 323-326 ◽  
Author(s):  
C. L. Whittles ◽  
R. C. Little
Keyword(s):  
Colorimetric Method ◽  
Soil Extracts

scholarly journals An automated colorimetric method for the determination of dicyandiamide in 1.0 M KCI soil extracts

1993 ◽  
Vol 10 (1) ◽  
pp. 22-27 ◽  
Author(s):  
D. C. Pretorius ◽  
J. F. van Staden ◽  
A. D.P. Botha ◽  
C. Kolver
Keyword(s):  
Colorimetric Method ◽  
Soil Extracts

Determination of Aluminum Ion Activity in Soil Extracts

1959 ◽  
Vol 23 (4) ◽  
pp. 266-269 ◽  
Author(s):  
W. L. Lindsay ◽  
Michael Peech ◽  
J. S. Clark
Keyword(s):  
Soil Extracts ◽  
Aluminum Ion ◽  
Ion Activity

Determination of Nitrates in Soil Extracts

1973 ◽  
Vol 37 (4) ◽  
pp. 660-660 ◽  
Author(s):  
C. G. Kowalenko ◽  
L. E. Lowe
Keyword(s):  
Soil Extracts

The Need for Using An Enzymatic Colorimetric Assay in Creatinine Determination of Peritoneal Dialysis Solutions

1990 ◽  
Vol 10 (1) ◽  
pp. 89-92 ◽  
Author(s):  
Liliane Larpent ◽  
Christian Verger
Keyword(s):  
Peritoneal Dialysis ◽  
Reliable Method ◽  
Colorimetric Assay ◽  
Colorimetric Method ◽  
Peritoneal Membrane ◽  
Creatinine Kinetics ◽  
Dialysis Solutions ◽  
Peritoneal Dialysis Solutions ◽  
Enzymatic Test

The fate of the peritoneal membrane on continuous ambulatory peritoneal dialysis (CAPD) is usually evaluated through the modification of its permeability to various solutes as glucose, creatinine, and urea. Therefore, the accuracy of the methods used for measurements of creatinine is of great importance. A particular problem does exist for creatinine determination as it may be influenced by the presence of glucose. We studied a new enzymatic colorimetric method for creatinine determination in peritoneal dialysis solutions which contain high dextrose concentrations. Creatinine was measured in plasma, urine, and dialysate from 18 patients on CAPD and in pure dextrose solutions, with an enzymatic test (Boehringer Mannheim) and with Jaffe's reaction on two different analyzers: Astra (Beckman) and Eris (Merck). Creatinine results were similar with both assays (Jaffe's reaction and enzymatic test) when measured in blood and urine. However the Jaffe's reaction gave higher creatinine results than the enzymatic test (p < 0.001), when assays were performed in peritoneal dialysis solutions and in pure glucose solutions. In addition, it appeared that other components of dialysis solutions, mainly calcium chloride, influenced unpredictably the results of creatinine with the Jaffe's reaction. We conclude that specific enzymatic test is a more accurate and reliable method to evaluate creatinine kinetics through the peritoneal membrane when determined in CAPD solutions.

A Colorimetric Method for the Determination of Co-Ral in Animal Tissues1

1960 ◽  
Vol 53 (2) ◽  
pp. 263-265 ◽  
Author(s):  
H. V. Claborn ◽  
M. C. Ivey ◽  
H. D. Mann
Keyword(s):  
Colorimetric Method

Validation of a colorimetric method for determination of paracetamol in exhaled breath condensate

2021 ◽  
Author(s):  
Fariba Pourkarim ◽  
Elaheh Rahimpour ◽  
Maryam Khoubnasabjafari ◽  
Vahid Jouyban-Gharamaleki ◽  
Afshin Gharakhani ◽  
...  
Keyword(s):  
Exhaled Breath Condensate ◽  
Colorimetric Method ◽  
Exhaled Breath ◽  
Breath Condensate
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