河北化工
河北化工
하북화공
HEBEI CHEMICAL ENGINEERING AND INDUSTRY
2012年
3期
55-57
,共3页
微型化%食盐%碘含量%准确度
微型化%食鹽%碘含量%準確度
미형화%식염%전함량%준학도
miniaturization%salt%content of iodine%accuracy
采用微型化实验,在相同的还原剂用量、温度、酸度下,分别用苯、CCl4为萃取剂,用淀粉为指示剂,测定含有一定量碘的食盐溶液中的碘含量,结果表明：用CCl4作萃取剂最佳,3种方法的实验误差均能满足定量分析实验要求,各种试剂用量较常量分析减少90%,实验速度明显提高,成本显著下降。
採用微型化實驗,在相同的還原劑用量、溫度、痠度下,分彆用苯、CCl4為萃取劑,用澱粉為指示劑,測定含有一定量碘的食鹽溶液中的碘含量,結果錶明：用CCl4作萃取劑最佳,3種方法的實驗誤差均能滿足定量分析實驗要求,各種試劑用量較常量分析減少90%,實驗速度明顯提高,成本顯著下降。
채용미형화실험,재상동적환원제용량、온도、산도하,분별용분、CCl4위췌취제,용정분위지시제,측정함유일정량전적식염용액중적전함량,결과표명：용CCl4작췌취제최가,3충방법적실험오차균능만족정량분석실험요구,각충시제용량교상량분석감소90%,실험속도명현제고,성본현저하강。
The content of iodine in salt was measured by with benzene or CCl4 as extractant,starch as indicator under the same reductant dosage,temperature,acidity using miniaturization experiment.The results showed that the best extractant was CCl4,experimental errors of three methods all could meet requirement of analytical experiments,the dosage of various reagents was less 90% than that of routine analysis,the speed of experiment was obviously increased and cost of experiment was striking reduced.
