TY  - RPRT
TI  - [A double column double pH solid phase extraction and capillary GC/FID method for rapid simultaneous determination of acidic and basic drugs in human plasma].
AU  - F H Qiu
AU  - L Liu
AU  - Y Luo
AU  - Y Q Lu
PY  - 1996
UR  - https://pubmed.ncbi.nlm.nih.gov/9206267/
ID  - 9206267
ER  -