摘要
采用滴浊-丁达尔现象方法测定螯合分散剂螯合分散铁能力。在传统滴浊法测试螯合分散钙能力的基础上,以滴定体系出现丁达尔现象判为终点来进行螯合分散剂螯合分散钙能力的测试。考察了样品用量和缓冲溶液用量对测试结果的影响:pH=10的NH3-NH4Cl缓冲溶液取5 mL,液体样品1.0 g或固体样品0.5 g为最佳测试条件。该法滴定终点明显,液体样品精密度小于1%,固体样品小于3%,能够很好地应用于螯合分散钙能力的评价。
Turbidity titration - Ding Daer phenomenon method was developed to determine chelating dispersant power for calcium ion. The influence of sample quantity and buffer solution amount was studied. Good sensitivity and RSD were obtained that liquid was suitable for the sample was less than 1% and solid sample was determination of chelating dispersant power for less than 3%. The results indicated that the method calcium ion.
出处
《广州化工》
CAS
2014年第19期120-121,147,共3页
GuangZhou Chemical Industry
关键词
螯合分散剂
钙离子
丁达尔现象
滴浊法
chelating dispersant agent
calcium ion
Ding Daer phenomenon
turbidity titration
