An Environmentally Friendly Flow Injection-Gas Diffusion System Using Roselle (<i>Hibiscus sabdariffa</i> L.) Extract as Natural Reagent for the Photometric Determination of Sulfite in Wines

<div>Effect of reagent concentration (% w/v) on sensitivity of sulfite determination.</div>

Journal of Analytical Methods in Chemistry

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Figure 3

Figure 3: An Environmentally Friendly Flow Injection-Gas Diffusion System Using Roselle (<i>Hibiscus sabdariffa</i> L.) Extract as Natural Reagent for the Photometric Determination of Sulfite in Wines 

Figure 3 | An Environmentally Friendly Flow Injection-Gas Diffusion System Using Roselle (Hibiscus sabdariffa L.) Extract as Natural Reagent for the Photometric Determination of Sulfite in Wines 