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6) Matrix solid-phase dispersion (MSPD)
MSPD mixes and grinds the sample and the filler together, so that the sample is evenly dispersed on the surface of the stationary phase particles, made into a semi-solid state and packed into a column, and then selects a suitable eluent for elution according to the principle of "similar compatibility"
A.
Yin Yi et al.
Ding Yayun et al.
Liu Hongcheng and others used MSPD method to extract and purify DES, HES and DIS in milk
Li et al.
B.
Lagana et al.
7) Gel permeation chromatography (GPC)
The GPC column is equipped with packing with a certain pore size, and the paths for molecules to pass in the column include the gap between particles (larger) and through holes (smaller) in the particles
8) Dispersive solid phase extraction (DSPE)
DSPE is a new sample pretreatment technology proposed by the US Department of Agriculture in 2003
Tang Xiaoshu established a DSPE-LC-MS/MS analysis method for four kinds of estrogen (including DES) in animal-derived foods such as milk, yogurt, chicken, chicken liver, beef and so on