GC Determination of Volatile Phenols in Industrial Waste Water

As described in the paper,volatile phenols in waste water sample were prederivatized with bromine and separated by extraction with cyclohexane.An aliquot of the extract was taken for GC analysis and 4 compounds,namely ① phenol and 3 derivatives of methyl phenol (i.e.② ortho,③ meta and ④ para methyl phenol) were determined.Relationships between peak area and concentration of the 4 compounds mentioned above were obtained in the following ranges with their detection limits (S/N=3) in the parenthesis: ① 0.008~80 μg·L-1 (8.4 ng·L-1),② 0.010~100 μg·L-1 (10.6 ng·L-1),③ 0.018~100 μg·L-1 (19 ng·L-1) and ④ 0.012~100 μg·L-1 (12.8 ng·L-1).Results of recovery and precision tests obtained were as follows: values of recovery were in the range of 87%-98%,and values of RSD′s (n=6) were in the range of 4.0%-7.0%.