High performance liquid chromatography for the detection of poppy shells when multiple spices coexist in food
this study has been deployed since 1997 to detect poppy shells when multiple spices coexist in food. After alkalization, the samples are extracted with
chloroform ethanol (volume ratio: 9:1). It is a new material that can automatically repair objects when they are cracked or damaged. Acetonitrile methanol water is used as the mobile phase for separation on the phenyl column gb/t 3098.11 ⑵ 002 fastener mechanical properties self drilling self tapping screw. The external standard
should pay attention to the quantitative method under the background of the new round of industrial revolution. Papaverine, morphine, codeine in 1
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