absorbance


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Related to absorbance: spectrophotometer, transmittance
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Synonyms for absorbance

(physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation

References in periodicals archive ?
DPPH radical-scavenging activity (%) = [1 (As1As2)/As0] x 100, where As0 is the absorbance of the control (distilled water instead of sample); As1 is the absorbance of a mixture of DPPH solution with sample and As2 is the absorbance of the sample alone (methanol instead of DPPH-methanol solution).
Devices with highest dye absorbance on solid titania films show highest short-circuit current and open-circuit voltage, corresponding with 3.72% of device efficiency (Figure 2(a) and see (a) in Table 1).
Figure 4 shows the photo of the obtained inkjet-printed images under UV light and daylight for three types of papers which differ by their absorbance: paper A--the lowest absorbance and the highest surface smoothness, paper B--the average absorbance and the average surface smoothness, and paper K--the highest absorbance and the lowest surface smoothness among the investigated non-OBA papers.
After addition of 0.6 ml hydrogen peroxide solution, tubes were vortexed and absorbance of the hydrogen peroxide at 230 nm was determined after 10 min, against a blank.
Staphylococcus aureus showed good and complete absorbance activity after 24 h, at pH 6, 7 and 8.
The formation constant ([K.sub.f]) and the molar absorptivity ([epsilon]) of the resulting complexes between ligands and different cations were calculated by fitting the observed absorbance, [A.sub.obs], at various [[M.sup.2+]] / [L] mole ratios to the previously derived equation (equation 1 and 2), which express the [A.sub.obs] as a function of the free and complexed metal ions, and the formation constant evaluated from a non--linear least--squares program KINFIT [17].
Absorbance Measurement by Fabricated Fiber Optic Microchannel.
Absorbance spectroscopy is an essential measurement tool for the measurement and analysis of proteins [1] and nucleic acids [2].
There is a linear relationship between the absorbance and concentrations of nitrobenzene/protein [18, 19]; in our research, we have also demonstrated that the linear relationship between absorbance and N[O.sub.3.sup.-]/N[O.sub.2.sup.-] concentrations at 302/351 nm peaks as shown in Figures 2(a) and 2(b) (ND-1000, NanoDrop spectrophotometer, Gene Company Limited).