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一、前言2-萘酚是染料工业的重要原料,其质量鉴定的方法是部标准HG2-328-77,先用化学分析法(碘滴定法)测定2-萘酚的含量,再用比色法测定1-萘酚的含量。测定手续繁杂,测定过程需严格的恒温控制,碘的标定需用剧毒的亚砷酸钠以及1-萘酚测定的准确度不高等缺点。目前国外较先进的2-萘酚测定方法是气相色谱法或液相色谱法,其特点是:2-萘酚与1-萘酚等不纯物的分离与测定一次完成。因此,
First, the preface 2-naphthol is an important raw material for the dye industry, and its quality identification method is the standard HG2-328-77, the first chemical analysis (iodometric titration) determination of 2-naphthol content, and then colorimetric Determination of 1 - naphthol content. Measurement procedures are complex, the measurement process requires strict temperature control, calibration of iodine need to use highly toxic arsenite and 1-naphthol determination of the shortcomings of high accuracy. At present, foreign advanced 2-naphthol determination method is gas chromatography or liquid chromatography, which is characterized by: 2-naphthol and 1-naphthol and other impurities separated and measured once completed. therefore,