The colorimetric error depends on the spectrophotometric inaccuracy. In this paper, a ‎new method is introduced for determining the relationship between spectrophotometric ‎error and colorimetric inaccuracy. The error propagation in colorimetric parameter ‎calculation is evaluated using a linear relation between variance of reflectance spectra ‎and CIE tristimulus values. This linear formula ca...

This study reports an improved spectrophotometric method for studying bacterial (Pseudomonas fluorescens UPER-1) transport and attachment in saturated porous media (silica sand). While studying the effect of ionic strength by the traditional packed-column spectrophotometric method, we encountered an artifact. The absorbance of a well-stirred bacterial suspension was found to decrease with time ...

An automated system for pyruvic acid analysis was developed in order to screen a large number of onion bulbs in our breeding program. The system includes two high performance liquid chromatography (HPLC) pumps, an autosampler, a column heater, a spectrophotometric detector, and an integrator. With this new method, human error can be eliminated with great repeatability (CV ˆ 0.9%), and we can ru...

A lag phase in the spectrophotometric assay progress curve of aldehyde oxidation by HL-ADH was observed and characterised. The aldehyde oxidation and aldehyde dismutation reactions were shown to be related, and a mechanism to explain net aldehyde oxidation was proposed. The spectrophotometric assay was shown to be unsuitable for measurement of kinetic parameters for aldehyde oxidation by HL-ADH...

the net analyte signal standard addition method was used for simultaneous spectrophotometric determination of sertraline and fluoxetine in pharmaceutical preparations. the method combines the advantages of the standard addition method with the net analyte signal concept to enable the extraction of information about an analyte from the spectra of multi-component mixtures. this method uses full s...

Optimal design of experiments as well as proper analysis of data are dependent on knowledge of the experimental error. A detailed analysis of the error structure of kinetic data obtained with acetylcholinesterase showed conclusively that the classical assumptions of constant absolute or constant relative error are inadequate for the dependent variable (velocity). The best mathematical models fo...

Context. One of the key ingredients in establishing the relation between input signal and output flux from a spectrometer is accurate determination of the spectrophotometric calibration. In the case of spectrometers onboard satellites, the accuracy of this part of the calibration pedigree is ultimately linked to the accuracy of the set of reference spectral energy distributions (SEDs) that the ...

Lily, R. E. C., Cole, P. V., and Hawkins, L. H. (1972). Brit. J. industr. Med., 29, 454-457. Spectrophotometric measurement of carboxyhaemoglobin. An evaluation of the method of Commins and Lawther. The spectrophotometric method of Conmmins and Lawther for the measurement ofcarboxyhaemoglobin (COHb) concentration was evaluated for both accuracy and sensitivity. The method was calibrated by equi...

Lily, R. E. C., Cole, P. V., and Hawkins, L. H. (1972). Brit. J. industr. Med., 29, 454-457. Spectrophotometric measurement of carboxyhaemoglobin. An evaluation of the method of Commins and Lawther. The spectrophotometric method of Conmmins and Lawther for the measurement ofcarboxyhaemoglobin (COHb) concentration was evaluated for both accuracy and sensitivity. The method was calibrated by equi...

The net analyte signal standard addition method was used for simultaneous spectrophotometric determination of sertraline and fluoxetine in pharmaceutical preparations. The method combines the advantages of the standard addition method with the net analyte signal concept to enable the extraction of information about an analyte from the spectra of multi-component mixtures. This method uses full s...