Determination of vitamin A in blood serum based on solid‐phase extraction using cetyltrimethyl ammonium bromide‐modified attapulgite

2019 ◽  
Vol 42 (23) ◽  
pp. 3521-3527 ◽  
Author(s):  
Rongrong Xuan ◽  
Tingting Wang ◽  
Chunyan Hou ◽  
Xie Li ◽  
Ying Li ◽  
...  
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