absorbance

(redirected from absorbances)
Also found in: Dictionary, Thesaurus, Medical.

absorbance

[əb′sȯr·bəns]
(physical chemistry)
The common logarithm of the reciprocal of the transmittance of a pure solvent. Also known as absorbancy; extinction.
References in periodicals archive ?
Minor] allele, the plate was washed, the ABTS substrate (Zymed) was added, and the absorbance was measured at 405 nm.
a) Absorbance readings by PCR-ONH Patient ID H63-oligo (b) 63D-oligo Absorbance ratio (c) WT control (P1) 2.
Thus, site pressure changes for measurements at 1000 nm/1220 nm would degrade estimates of analyte absorbance ratios compared with measurements at 820 nm/1000 nm.
The absorbance of each well was read in the microplate reader at room temperature at wavelengths of 340 nm and 490 mn (reference), using the kinetic mode with a reading interval of 20 s for a duration of 18 min.
CD4 and CD8 absorbance values were determined by the Whole Blood Capcellia assay on successive dilutions of a blood sample that had been analyzed previously by flow cytometry.
ref] are the absorbances (with buffer subtracted) of the QD suspension and the reference fluorophore solution, respectively.
The absorbance of sample (methanolic extract of Nymphaea stellata and standard Butylated hydroxytoluene) were taken in triplicate.
The basis for determining the concentration of followed species is Lambert-Beer law which establishes the connection between the optical absorbance A of the colored solution, thickness of the photometrical layer b, molar absorption coefficient a and the concentration c of the species observed:
For those wishing to create modeled transmittance curves, this can be done easily from the absorbance and film thickness data using the LINEST function for columns of data.
If we plot absorbance or transmittance against frequency or wave number, the result is an infrared spectrum.
450] was measured as the difference in absorbance between the bilirubin peak at 450 nm, and a baseline was established between the absorbance of wavelengths flanking the bilirubin peak (~370 run and 525 nm) on a linear scale.