锆及锆合金中微量硼的测定,一般采用姜黄素比色法。该法灵敏度高,但操作繁复,条件控制要求较严。也有作者用胭脂红或亮绿法,但灵敏度不够高。近年来也有应用结晶紫或次甲基蓝法的报导,但后法必须反洗有机相,否则空白值太高。据资料报导,用乙基紫萃取光度法测定硼,其克分子吸收系数可达1.1—1.07×10~5。本文将乙基紫法用于锆及锆合金中微量硼的测定,以EDTA作掩蔽剂,在pH为5.8的酸度下,用苯直接萃取硼 Determination of trace boron in zirconium and zirconium alloys, the general use of curcumin colorimetric method. The method of high sensitivity, but the complicated operation, the requirements of the more stringent control. There are also carmine or bright green method, but the sensitivity is not high enough. In recent years there are also reports of crystal violet or methionine blue method, but after the law must backwash the organic phase, otherwise the blank value is too high. According to the data reported, ethyl violet extraction spectrophotometric determination of boron, the molecular absorption coefficient of up to 1.1-1.07 × 10 ~ 5. In this paper, ethyl violet method for the determination of trace amounts of boron in zirconium and zirconium alloys with EDTA as a masking agent, pH 5.8, the direct extraction of boron with benzene