A Spectrophotometric Flow Injection Method for Determination of Ultratrace Amounts of Phenylhydrazine by Its Inhibition Effect on the Reaction of Thionin and Nitrite

<table>Effect of sulfuric acid, thionin, and sodium nitrite concentrations on the mean of peak height (<svg height="11.1" id="M5" style="vertical-align:-0.17555pt" version="1.1" viewbox="0 0 35.099998 11.1" width="35.099998" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 12.50px; " x="0" y="0">𝑛</tspan>
<tspan style="font-size: 12.50px; " x="9.6773224" y="0">=</tspan>
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</svg>) of 0.1 <i>μ</i>mol L<sup>−1</sup> phenylhydrazine standard solution.</table>

Journal of Chemistry

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Figure 3

Figure 3: A Spectrophotometric Flow Injection Method for Determination of Ultratrace Amounts of Phenylhydrazine by Its Inhibition Effect on the Reaction of Thionin and Nitrite 

Figure 3 | A Spectrophotometric Flow Injection Method for Determination of Ultratrace Amounts of Phenylhydrazine by Its Inhibition Effect on the Reaction of Thionin and Nitrite 