2010 年 59 巻 10 号 p. 917-920
A methyl benzoate extraction procedure was studied for determining small amounts of phenol compounds in waste in the 4-aminoantipyrine spectrometry. The proposed procedure was as sensitive as the typical chloroform extraction procedure. The precision of repeated tests (n = 4) was ca. 0.7% on phenol solution (0.20 μg as phenol/mL). The detection limit was 0.004 μg as phenol/mL. Good results were obtained in recovery tests using both waste water and river water.