C.I.Acid red 26(Ponceau 2R) C.I.

酸性紅26欧美性日本黑人HD；麗春紅2R

Shenyang Research Institute of Chemical Industry, Shenyang 110021, China Abstract: Spectrophotometric analysis showed that the peak absorbance for food dye of Allura Red and biological dye of Ponceau-G occurred at 501 and 510 nm. In sunlight after 2, 4, 6, 8, 10 hours, the decomposition rates of Allura Red and Ponceau G were between 2.4 to 5.8% and 3.4 to 10.8%, so they are stable in sunlight. The recovery rates on cottons and glasses were very high, so they are easily recoveried from targets. Further studies showed that the recovery rates of two dyes on the leaves of wheat, cabbage, cucumber and tomato were different, so it need previously determine the recovery rate of tracer on the target crop to adjust the result. Field experiment showed it was easy to measure the pesticide spray distribution of high volume spay and low volume spray to use Allura Red and Ponceau-G as tracers.

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By examining RLS spectral features of four systems including Al3+-DNA, azoviolet-cationic surfactants, fast red VR-proteins, ponceau G-proteins in this thesis, and proved that the instrumental conditions of spectrofluorometer have strong effect on the shape of resonance light scattering spectra.

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Chapter 6 develops a novel procedure for the separation of eight synthetic food colorants (Amaranth, Brilliant Blue, Indigo Carmine, New Red, Ponceau 4R, Sunset Yellow, Tartrazine, Allura Red) by high performance ion exchange chromatography.

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English corner：顏色的表示

English corner 顏色的表示 | 紅色 red | 朱紅 vermeil; vermilion; ponceau

vermeil, ponceau：朱紅

red 紅色 | vermeil, ponceau 朱紅 | pink;soft red; rose bloom 粉紅色

vermeil, ponceau：朱紅,鮮紅

紅色 red | 朱紅,鮮紅 vermeil, ponceau | 粉紅色 pink; soft red; rose bloom