广东化工
廣東化工
엄동화공
GUANGDONG CHEMICAL INDUSTRY
2012年
16期
68-68,72
,共2页
硫代硫酸钠%实验条件改进%存放时间%放置时间
硫代硫痠鈉%實驗條件改進%存放時間%放置時間
류대류산납%실험조건개진%존방시간%방치시간
sodiumthiosulfate%improvement of experimental conditions: preservation time%the titration solution added Acid can be improved to 5 minutes.
经过实验探索，发现一定条件下配制的硫代硫酸钠滴定液，配制后放置5天过滤标定，在4℃保存，与存放6个月内标定浓度基本一致，6个月内无需复标。标定过程中加酸后的放置时间，放置5min与放簧10min标定结果基本一致，可将加酸后的放置的时间改进为5min。
經過實驗探索，髮現一定條件下配製的硫代硫痠鈉滴定液，配製後放置5天過濾標定，在4℃保存，與存放6箇月內標定濃度基本一緻，6箇月內無需複標。標定過程中加痠後的放置時間，放置5min與放簧10min標定結果基本一緻，可將加痠後的放置的時間改進為5min。
경과실험탐색，발현일정조건하배제적류대류산납적정액，배제후방치5천과려표정，재4℃보존，여존방6개월내표정농도기본일치，6개월내무수복표。표정과정중가산후적방치시간，방치5min여방황10min표정결과기본일치，가장가산후적방치적시간개진위5min。
Through experiment, we found that the sodium thiosulfate titration solution prepared under certain conditions when filtrated and Calibratd after five days, preserved at 4 ℃, the calibration concentration keep the same and does not require to be re-marked within six months, we also/bund that the titration solution added Acid in the calibration process can keep the calibration results identical with the storage time 5 minutes and 10 minutes. So the storage time of Storage time .
