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Continue to ChatDetermination of Tartrazine and Ponceau-4R in various food samples by Vierordt's method and ratio spectra first-order derivative UV spectrophotometry - https://avesis.hacettepe.edu.tr/yayin/e41c9519-b2d5-4db1-b3b6-236b4823c43a/determination-of-tartrazine-and-ponceau-4r-in-various-food-samples-by-vierordts-method-and-ratio-spectra-first-order-derivative-uv-spectrophotometry