电位滴定法测定铁质文物除氯碱液中氯离子含量  

Automatic potentionmetric titration of chloride ion in alkaline dechlorination solution from archaeological iron by soaking

作　　者：刘朵 何积铨 LIU Duo;HE Ji-quan(Institute of Scientific and Technological Development and Cultural Heritage,University of Science and Technology-Beijing,Beijing 100083,China;Institute of Advanced Materials and Technology,University of Science and Technology-Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学科技史与文化遗产研究院,北京100083 [2]北京科技大学新材料技术研究院,北京100083

出　　处：《应用化工》2018年第6期1301-1303,共3页Applied Chemical Industry

基　　金：973计划项目(2011CB013502-3)

摘　　要：用0.01 mol/L硝酸银溶液电位滴定,测定铁质文物除氯碱性浸泡液中的氯离子浓度。通过检测空白加标溶液,确定其检测下限为3.43 mg/L,定量限11.44 mg/L。跟踪检测模拟铁质文物除氯的浸泡碱液,其加标回收率为100.0%~100.7%。针对浓度介于检测限和定量限之间的样品,提出阶梯增量法,更加符合文物除氯工作的需要。Automatic potentionmetric titration using 0. 01 mol/L silver nitrate solution to determine the chloride ion solution. The LOD was 3. 43 mg/L and the LOQ was 11. 44 mg/L by detecting the blank spiking solution. The recoveries of the soaked alkali solution were simulated,and the recoveries were in the range of 100. 0% ~ 100. 7%. For the concentration between the detection limit and the limit between the sample,proposed step incremental method,more in line with the needs of deforestation work.

关 键 词：铁质文物 除氯 氯离子 自动电位滴定 

分 类 号：TQ014[化学工程]