硼酸含量的测定 应用资料

硼酸含量的测定 应用资料硼酸含量的测定是向稀释样品中加入甘露醇后，用1mol/L氢氧化钠溶液滴定法测定硼酸浓度。终点是滴定曲线上的最大拐点。硼酸浓度由氢氧化钠的滴定体积计算得出。TIQ-96082enL Application Memo Determination of Boric Acid Industry Inorganic chemical industry Instrument Automatic potentiometric titrator Measurement method Acid-base titration Standards GB/T 538， GB/T 12684 1.Overview After adding mannitol to the diluted sample， boric acid concentration i s measured by titration with the 1mol/L sodium hydroxide solution. The endpoint is the maximum inflexion on the titration curve. The boric acid concentration is calculated from the titration volume of sodium hydroxide. 2. Apparatus Main unit Automatic potentiometric t itrator (preamplifier STD) Electrode pH glass electrode Ceramic reference electrode Temperature compensation electrode 3.Reagents Titrant 1 mol/L sodium hydroxide solution Solvent Pure Water Additive Mannitol -Measurement results- Concentration(%) AverageSD RSD(%) 99.951 0.140 0.140 -Titration curve- Please feel free to contact us for any further i nformation. Kyoto Electronics Manufacturing Co.， Ltd.Overseas Sales & Marketing Sect.