Research output: Contribution to journal › Article › peer-review
Homogeneous liquid-liquid microextraction based on primary amine phase separation: a novel approach for sample pretreatment. / Cherkashina, Ksenia; Lebedinets, Sofya; Pochivalov, Aleksei; Lezov, Aleksey; Vakh, Christina; Bulatov, Andrey.
In: Analytica Chimica Acta, Vol. 1074, 2019, p. 117-122.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Homogeneous liquid-liquid microextraction based on primary amine phase separation: a novel approach for sample pretreatment
AU - Cherkashina, Ksenia
AU - Lebedinets, Sofya
AU - Pochivalov, Aleksei
AU - Lezov, Aleksey
AU - Vakh, Christina
AU - Bulatov, Andrey
PY - 2019
Y1 - 2019
N2 - A homogeneous liquid-liquid microextraction procedure based on primary amine phase separation was developed as a novel approach for the pretreatment of biological fluids. The procedure assumes primary amine dissolution in the aqueous sample phase, resulting in the creation of a homogeneous sample solution followed by phase separation and analyte extraction in the presence of a polar, water-miscible organic solvent. The phenomenon of primary amine phase separation from homogeneous aqueous solution in the presence of a polar, water-miscible organic solvent was studied in detail and applied for separation and preconcentration in chemical analysis for the first time. The suggested approach was used for the HPLC-UV determination of meropenem as a proof-of-concept analyte in human plasma and serum samples. Under optimal conditions, the detector response of meropenem was linear in the concentration range of 0.1–100.0 mg L −1. The limit of detection was calculated from a blank test based on 3σ, was 0.03 mg L −1.
AB - A homogeneous liquid-liquid microextraction procedure based on primary amine phase separation was developed as a novel approach for the pretreatment of biological fluids. The procedure assumes primary amine dissolution in the aqueous sample phase, resulting in the creation of a homogeneous sample solution followed by phase separation and analyte extraction in the presence of a polar, water-miscible organic solvent. The phenomenon of primary amine phase separation from homogeneous aqueous solution in the presence of a polar, water-miscible organic solvent was studied in detail and applied for separation and preconcentration in chemical analysis for the first time. The suggested approach was used for the HPLC-UV determination of meropenem as a proof-of-concept analyte in human plasma and serum samples. Under optimal conditions, the detector response of meropenem was linear in the concentration range of 0.1–100.0 mg L −1. The limit of detection was calculated from a blank test based on 3σ, was 0.03 mg L −1.
KW - Biological fluids
KW - HPLC-UV
KW - Homogeneous liquid-liquid microextraction
KW - Meropenem
KW - Primary amine
UR - http://www.scopus.com/inward/record.url?scp=85066084495&partnerID=8YFLogxK
U2 - 10.1016/j.aca.2019.04.070
DO - 10.1016/j.aca.2019.04.070
M3 - Article
VL - 1074
SP - 117
EP - 122
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
SN - 0003-2670
ER -
ID: 41413016