isosbestic point

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• Isosbestic point — In spectroscopy, an isosbestic point is a specific wavelength at which two (or more) chemical species have the same molar absorptivity ( epsilon;). When an isosbestic plot is constructed by the superposition of the absorption spectra of two… …   Wikipedia

• Point isobestique — pour des spectres de solutions acide, basique et intermédiaire de vert de bromocrésol. La concentration analytique de colorant est la même dans toutes les solutions En spectroscopie, un point isobestique est une longueur d onde (λ), un nombre d… …   Wikipédia en Français

• point — 1. SYN: punctum. 2. A sharp end or apex. 3. A slight projection. 4. A stage or condition reached, as the boiling p. 5. To become ready to open, said of an abscess or boil the wall of which is becoming thin and about to rupture. 6. In mathematics …   Medical dictionary

• isosbestic — Denoting the wavelength of light at which two related compounds have identical extinction coefficients; e.g., the wavelength at which the absorption spectra of hemoglobin and oxyhemoglobin cross is their i. point. Spectrophotometry at that …   Medical dictionary

• Polythiophene — The monomer repeat unit of unsubstituted polythiophene …   Wikipedia

• Pulse oximeter — A finger mounted pulse oximeter taking measurement through the fingernail. A wrist mounted remote sensor pulse oximeter with plethysmogram. A puls …   Wikipedia

• Molar absorptivity — The molar absorption coefficient, molar extinction coefficient, or molar absorptivity, is a measurement of how strongly a chemical species absorbs light at a given wavelength. It is an intrinsic property of the species; the actual absorbance, A,… …   Wikipedia

• Fluorescein — Chembox new ImageFile = Fluoresceine.svg ImageSize = ImageFile2 = Fluorescein sample.jpg IUPACName = OtherNames = Fluorescein, resorcinolphthalein, C.I. 45350, solvent yellow 94, D C yellow no. 7, angiofluor, Japan yellow 201, soap yellow,… …   Wikipedia

• Bromocresol green — Chembox new ImageFile = bromocresol green.png ImageSize = IUPACName = 2,6 Dibromo 4 [7 (3,5 dibromo 4 hydroxy 2 methyl phenyl) 9,9 dioxo 8 oxa 9λ6 thiabicyclo [4.3.0] nona 1,3,5 trien 7 yl] 3 methyl phenol OtherNames = 3,3 ,5,5 Tetrabromo m… …   Wikipedia

• isostilbic — adjective Describing an isosbestic point in a spectrum that remains constant throughout a reaction …   Wiktionary