Kacprzak J L
J Assoc Off Anal Chem. 1977 Sep;60(5):1142-4.
A method is described for determining dimethylpolysiloxane in instant coffee. The siloxane is extracted with chloroform in a Soxhlet apparatus and then converted to silica which is estimated by a heteropoly blue method. The method is interference-free, and 5 microgram dimethylpolysiloxane can be easily detected.
描述了一种测定速溶咖啡中聚二甲基硅氧烷的方法。用氯仿在索氏提取器中提取硅氧烷,然后将其转化为二氧化硅,用杂多蓝法进行测定。该方法无干扰,能轻松检测出5微克的聚二甲基硅氧烷。