摘要
在磷酸酸性条件下，用凯氏定氮仪代替传统的蒸馏装置对样品进行蒸馏，吸收液中的甲醛与乙酰丙酮作用生成稳定的黄色化合物，在波长435nm处进行比色定量。用该法测定水发产品中的甲醛含量，测定的相对标准偏差≤2．31％（n=5），回收率为95．9％-101．0％。结果满意。
Formaldehyde product was distilled using by distillation unit and an aliquot of the distillate was treated with acetylacetone to form a stable yellow colored compound which had its absorption maxima at 435 nm. It was successfully applied in the determination of formaldehyde content in watefishlogged product.
出处
《西南农业学报》
CSCD
2008年第5期1480-1481,共2页
Southwest China Journal of Agricultural Sciences
关键词
光度法
甲醛
乙酰丙酮
水产食品
speetrephotometry
formaldehyde
acetylaeetone
watefishlogged product
