[Spectral characteristics of dyes--the ultraviolet and visible bands].
A spectral characteristic of 7 dyes: azorubin, amaranth-5, erythrosin, indigotin ponso-4R, tetrasin and chinolin yellow is made. It includes the visual and ultraviolet field (from 200 to 850 nm) of water dye solutions. Besides absorption spectra area-made derivative spectra: I and IInd derivative of the absorption. The maximums and minimums of the absorptions and the minimums of the derivatives are determined. Suitable maximums and minimums for qualitative and quantitative characteristics of the dyes are chosen. A spectrophotometric system "Spectronic-2000" - "Baush and Lomb" is used. For quantitative determination of dyes are given the conditions of work in the derivative variant and the measures of length in intervals from 5 to 50 micrograms/cm3 (in water solution). When there is no spectral characteristic in the infrared field the given spectra could serve for evaluation of the dyes quality and quantity for sanitary and hygiene control.
I
I
Benchev
N
N
Rizov
A
A
Kolarska
D004396:Coloring Agents / Q000032:analysis*; D004305:Dose-Response Relationship, Drug; D012996:Solutions; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet
D004396:Coloring Agents; D012996:Solutions
Spektralna kharakteristika na bagrila--ultravioletova i vidima oblast.