CAJ | 학술논문

以阿拉山口口岸进口的工业硫磺为样品，建立了测定硫磺总酸度的自动电位滴定法。对滴定模式、主要滴定参数和样品溶解时间进行了探究。每个样品平行测定10次，计算的相对标准偏差为1.6560%~1.7857%；加标回收实验中，得到回收率为95.39%~107.29%，说明了自动电位滴定法精密度很高，同时具有很高的准确度。
이아랍산구구안진구적공업류광위양품，건립료측정류광총산도적자동전위적정법。대적정모식、주요적정삼수화양품용해시간진행료탐구。매개양품평행측정10차，계산적상대표준편차위1.6560%~1.7857%；가표회수실험중，득도회수솔위95.39%~107.29%，설명료자동전위적정법정밀도흔고，동시구유흔고적준학도。
Basing on samples of imported industrial sulfur in Alashankou port, the automatic potentiometric titration determination of total acidity was established. The titration mode, main titration parameters and the dissolving time of the samples were studied. Each sample tested 10 times, the relative standard deviation was 1. 6560% ~1. 7857%, and in the recovery experiment, the recovery rate was 98. 56% ~101. 02%, which proved that automatic potentiometric titration method possessed high precision and accuracy.