几种常见滴定液长期稳定性考察  

Study on the Stability of Several Common Titrants in a Long Period

作　　者：农朗 黄艳 刘雪萍[3] 邓书武 NONG Lang;HUANG Yan;LIU Xueping;DENG Shuwu(Jiangbin Hospital of Guangxi Zhuang Autonomous Region,Guangxi Nanning 530021;The 923th Hospital of Joint Logistic Support Force of Chinese People s Liberation Army,Guangxi Nanning 530028;Guangxi Health Science College,Guangxi Nanning 530023;The First Affiliated Hospital of Guangxi Medical University,Guangxi Nanning 530021,China)

机构地区：[1]广西壮族自治区江滨医院,广西南宁530021 [2]中国人民解放军联勤保障部队第九二三医院,广西南宁530028 [3]广西卫生职业技术学院,广西南宁530023 [4]广西医科大学第一附属医院,广西南宁530021

出　　处：《广州化工》2024年第23期78-80,共3页GuangZhou Chemical Industry

基　　金：广西壮族自治区中医药管理局自筹经费科研课题(GXZYA20220222)。

摘　　要：通过长期考察乙二胺四醋酸二钠滴定液、亚硝酸钠滴定液、盐酸滴定液、硫代硫酸钠滴定液、氢氧化钠滴定液、硝酸银滴定液、硫酸滴定液、高氯酸滴定液的稳定性,为其有效期制定提供参考。每3个月考察滴定液的液性状是否改变和计算滴定液浓度差异相对平均偏差(RSD)是否大于0.1%来判定其有效期,每个滴定液考察3个批次。结果3~6个月内比较稳定的有乙二胺四醋酸二钠滴定液(0.05 mol/L)、亚硝酸钠滴定液(0.1 mol/L)、盐酸滴定液(0.1 mol/L)、硫代硫酸钠滴定液(0.1 mol/L)、氢氧化钠滴定液(0.1 mol/L)、硝酸银滴定液(0.1 mol/L),因此有效期建议定为3个月;硫酸滴定液(0.05 mol/L)、高氯酸滴定液在0~3个月内浓度差异比较大,建议有效期定在3个月内。Provide data for making expiration date by study the stability of ethylene diamine tetraacetate disodium titrant,sodium nitrite titrant,hydrochloric acid titrant,sodium thiosulfate titrant,sodium hydroxide titrant,silver nitrate titrant,sulfuric acid titrant,perchloric acid titrant in a long period.Every 3 months,checked whether the liquid properties of the titration solution had changed and calculated whether the RSD of the concentration difference of the titration solution exceeds 0.1%to determine its validity period,examined three batches of each titrant.Found out that ethylene diamine tetraacetate disodium titrant(0.05 mol/L),sodium nitrite titrant(0.1 mol/L),hydrochloric acid titrant(0.1 mol/L),sodium thiosulfate titrant(0.1 mol/L),sodium hydroxide titrant(0.1 mol/L),silver nitrate titrant(0.1 mol/L)were stable in 3 to 6 months,the expiration dates could be 3 months.Sulfuric acid titrant(0.05 mol/L),perchloric acid titrant(0.1 mol/L)were not stable in 0 to 3 months,the expiration dates should be less than 3 months.

关 键 词：滴定液 有效期 稳定性 标定 

分 类 号：R917[医药卫生—药物分析学]