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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Determination of Sulphur Dioxide<br />
in Food by Flow Injection Analysis<br />
Comminute and homogenise the samples<br />
Weigh 10g sample in 50 mL centrifuge tube<br />
Add 30-50 mL TCM extraction solution<br />
~ 2 mL Carrez solutions to the centrifuge tube<br />
(solid and semi-solid sample only)<br />
• Shake and sonicate for ~10 mins respectively<br />
Sodium tetrachloromercurate (TCM) extraction solution, 0.04M Hg:<br />
Dissolve 4.70g NaCl, 10.90 HgCl 2 and 6.80g KH 2 PO 4 in 1L Milli-Q water<br />
Carrez Solution 1: 10.6 g potassium ferrocyanide (II) (K 4 [Fe(CN) 6 ].3H 2 O) in 100 mL<br />
distilled water<br />
Carrez Solution 2: 22.0 g zinc acetate and 3 mL glacial acetic acid in distilled water<br />
and dilute to 100 mL
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