Study on the Determination of Toxic Chemicals in Exhaust Gas. (V). Determination of Phenylenediamines by HPLC.:—Determination of Phenylenediamines by HPLC—
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概要
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A method was developed for the determination of <I>o</I>-, <I>m</I>- and <I>p</I>-phenylenediamines (PDs) in exhaust gas. PDs were collected by bubbling sample gas through 15ml of diluted hydrochloric acid. The sample solution was adjusted to 20ml with the absorbent solution and a 10 μl of it was injected to high performance liquid chromatograph with an UV detector.<BR>The recoveries were 95.9-104% after 240l of in-door air was passed through the solution to which the standards were added. The detection limits by this method were65-77μg/m<SUP>3</SUP> for 60l of gas sample. PDs remained stable in the absorbent solution for at least 4 days. The method was successfully applied to exhaust gases from a dye industry.
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