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建立了测定水中痕量挥发性酚类的４ － 氨基安替比林（４ － ＡＡＰ） － 流动注射分光光度法。将含挥发性酚类的预蒸馏水样注入到载流中，与４ － ＡＡＰ试剂流混合，在Ｋ２Ｓ２Ｏ８ 流（ｐＨ１１．０） 的催化下，反应形成红色吲哚酚安替比林染料，在λｍａｘ 为５１０ ｎｍ 处对其进行分光光度检测。线性范围为０．０ ～１６．０ ｍｇ／Ｌ 挥发性酚类，检测限为０．０３４ ｍｇ／Ｌ，测定频率为４０ 次／ｈ 。本法的灵敏度较高，选择性较好，分析速度快。测定工业废水中痕量挥发性酚类，获得满意结果。
A 4 - aminoantipyrine (4 - AAP) - flow injection spectrophotometry was developed for the determination of trace volatile phenols in water. A pre - distilled water sample containing volatile phenols is injected into the carrier and mixed with the 4 - AAP reagent. The reaction is catalyzed by a K2S2O8 stream (pH 11.0) to form a red indoxyl antipyrine dye. The λmax Its spectrophotometry was performed at 510 nm. Linear range of 0.0 ~ 16.0 mg / L volatile phenol, the detection limit of 0.034 mg / L, the determination frequency of 40 times / h. The method of high sensitivity, better selectivity, fast analysis. Determination of trace amounts of volatile phenols in industrial wastewater, to obtain satisfactory results.