食物中二氧化硫分析簡介 - uri=govtlab.gov
食物中二氧化硫分析簡介 - uri=govtlab.gov
食物中二氧化硫分析簡介 - uri=govtlab.gov
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Connect a gas inlet tube for the introduction of N 2<br />
Add 30 mL 3% H 2 O 2 solution to a collection vessel and add a few drop of<br />
methyl red to the solution for trapping the distillate (SO 2 )<br />
Add HCl into flask and start heating the solution for about 100 minutes<br />
Collect the distillate for titration analysis<br />
The introduction of a steady N 2 flow is<br />
important!
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