absorbance

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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 ?
[??] (970), normalized absorbance = A (970)/A (2,236) and [??] (723) = A (723)/A (2,236).
The [DELTA][A.sub.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.
To identify the wavelength at which absorbance can reflect the methyl groups (-[CH.sub.3]), a polypropylene (PP) spectrum was measured at the same wavelength range.
The sample was eluted from the column with phosphate buffer pH 6.65 at a flow rate of 0.5 ml [min.sup.-1] and the absorbance of the protein was monitored using a multi-wavelength detector (Model 490E; Millipore-Waters, Australia).
The difference is absorbance. Virtually all molecular entities selectively absorb light energy as particular frequencies in the NIR range.
Universal detection Although the current limits of laser technology restrict direct applications of TLS, an indirect scheme converts a selective absorbance detector into a universal detection device.
The absorbance measurements were performed with a Perkin Elmer Lambda 850 spectrometer equipped with a 150 mm integrating sphere (IS) detector.
Where, Ac is absorbance of control, As is the absorbance of sample.
(1) reminds us of the difficulty of assessing amniotic fluid bilirubin absorbance in specimens contaminated by blood.
Relative allyl absorbances were determined directly after vulcanization of the compound and are presented in Fig.
Method B is based on dual wavelength spectrophotometry where ASC can be determined by difference in absorbance at 249.8 and 285.8 nm.