The phrase "a shift in absorbance" is correct and usable in written English.
It can be used in scientific contexts, particularly in chemistry or biology, to describe a change in the amount of light absorbed by a substance.
Example: "The experiment showed a significant shift in absorbance, indicating a reaction had occurred."
Alternatives: "a change in absorbance" or "a variation in absorbance".
After intercalation, ZCA intercalation compound showed broadening in absorption range and a shift in absorbance peaks to the higher wavelength region (266 370 nm).
Some transformations of sulfates seem to occur, emphasized by a shift in absorbance of the S O stretching between 1,100 and 1,200 cm−1.
To determine the accessibility of heparin when complexed, we mixed nanoSTATs with Azure II, a metachromatic dye that exhibits a shift in absorbance upon electrostatic interaction with heparin.
Such a shift in absorbance indicates the formation of a ground-state complex (contact) between the residue and bimane fluorophore, as we have noted and discussed previously.
The concentration where there is a shift in the absorbance dependency with concentration is then considered as the critical aggregation concentration.
Binding of the amyloid-specific dye Congo red was demonstrated both by a shift in the absorbance maximum of the dye [31] [32] (Figure S4A) and by birefringence as monitored by polarization microscopy [33] [34] (Figure S4B).
Loss of native tertiary structure results in loss of green fluorescence and a shift in the absorbance peak [ 21].
Unraveling of collagen triple helix can occur and be monitored from the spectral changes such as a shift in the absorbance frequency [ 30].
Reduction of WT MauG is characterized by an increase in the intensity of the Soret peak, a shift in the absorbance maximum to 418 nm, and the appearance of α and β bands at 550 and 520 nm, respectively.
We have previously shown that binding of oxygen to P450cin results in a shift in the absorbance peak from 411 nm, characteristic of the Fe(II) state, to 418 nm, characteristic of the Fe(II)–O2 state.
Fibril formation was confirmed by a Congo Red spectrophotometric assay that showed a characteristic shift in absorbance from 403 to 541 nm (data not shown).
