Chemistry Department, Villanova University, Villanova, PA 19085, USA.
Talanta. 1986 Apr;33(4):311-4. doi: 10.1016/0039-9140(86)80079-0.
Twenty more aromatic amines are determined by the diazotization and coupling spectrophotometric technique, with 8-amino-1-hydroxynaphthalene-3,6-disulphonic acid (H-acid) and N-(1-naphthy)ethylenediamine (N-na) as coupling agents. The following are determined by both methods: 2,4-diaminotoluene, 2-aminobenzotrifluoride, 4-benzoxyaniline, 2,4-dimethyl-6-nitroaniline, 4,5-dimethyl-2-nitroaniline, 2-amino-9-fluorenone, naphthionic acid (sodium salt), 3-aminonaphthalene-2, 7-disulphonic acid (monosodium salt), 2-aminonaphthalene-1-sulphonic acid, 4-aminonaphthalene-1-sulphonic acid and 2,4-dibromoaniline. The following are determined only by the N-na method: 5-aminosalicylic acid, 2-amino-4-nitrophenol, 4-amino-2,6-dichlorophenol hydrochloride, 2,5-dimethoxy-aniline, 4-aminothiophenol, 4,4'-diaminodiphenylmethane, 1-naphthylamine, 4,4'-diaminobiphenyl-2,2'-disulphonic acid and 4,4'-diaminostilbine-2,2'-disulphonic acid. The optimum acidities for the different aromatic amines for the N-na method vary considerably. A number of aromatic amines cannot be determined by either method.
二十多种芳香胺采用重氮化偶合分光光度法测定，其中 8-氨基-1-萘酚-3,6-二磺酸（H 酸）和 N-（1-萘基）乙二胺（N-萘胺）为偶合试剂。以下是两种方法都可以测定的物质：2,4-二氨基甲苯、2-氨基苯并三氟化物、4-苯氧基苯胺、2,4-二甲基-6-硝基苯胺、4,5-二甲基-2-硝基苯胺、2-氨基-9-芴酮、萘氨酸（钠盐）、3-氨基-2,7-萘二磺酸（单钠盐）、2-氨基-1-萘磺酸、4-氨基-1-萘磺酸和 2,4-二溴苯胺。以下是只能用 N-萘胺法测定的物质：5-氨基水杨酸、2-氨基-4-硝基苯酚、4-氨基-2,6-二氯苯酚盐酸盐、2,5-二甲氧基苯胺、4-氨基硫酚、4,4'-二氨基二苯甲烷、1-萘胺、4,4'-二氨基联苯-2,2'-二磺酸和 4,4'-二氨基联苯二磺酸。N-萘胺法测定不同芳香胺的最佳酸度差异很大。有些芳香胺两种方法都无法测定。
