Chiral Analysis of Drug Residuals in Wastewaters

Chiral Analysis of Drug Residuals in Wastewaters

Abstrakt

Many of the pharmacologically active substances present in the environment are chiral. However, there is only little data concerning their fate in the environment on the enantiomeric level. Chiral pharmaceuticals are known to exhibit stereoselective behaviour when situated in biological system such as human body. Therefore, stereoselective behaviour of chiral drugs is very likely to happen in the environment. Enantioselective HPLC-DAD method using Chiralpak AD as a chiral column was developed for the analysis of two non-steroidal anti-inflammatory drugs ibuprofen and ketoprofen in wastewater samples. Before the chiral analysis was applied, the sum of enantiomers was quantified by HPLC-ESI-MS. After this, the samples were analyzed by chiral HPLC using diode array detector. It was found out that the diode array detector is not sensitive and selective enough for the chiral analysis of wastewater samples. Drugs are generally present in the wastewater in very small amounts and when they are divided into individual enantiomers, their concentrations are too low for UV detection and detection by mass spectrometry is needed.

Many of the pharmacologically active substances present in the environment are chiral. However, there is only little data concerning their fate in the environment on the enantiomeric level. Chiral pharmaceuticals are known to exhibit stereoselective behaviour when situated in biological system such as human body. Therefore, stereoselective behaviour of chiral drugs is very likely to happen in the environment. Enantioselective HPLC-DAD method using Chiralpak AD as a chiral column was developed for the analysis of two non-steroidal anti-inflammatory drugs ibuprofen and ketoprofen in wastewater samples. Before the chiral analysis was applied, the sum of enantiomers was quantified by HPLC-ESI-MS. After this, the samples were analyzed by chiral HPLC using diode array detector. It was found out that the diode array detector is not sensitive and selective enough for the chiral analysis of wastewater samples. Drugs are generally present in the wastewater in very small amounts and when they are divided into individual enantiomers, their concentrations are too low for UV detection and detection by mass spectrometry is needed.

chiral pharmaceuticals, chiral analysis, non-steroidal anti-inflammatory drugs, ibuprofen, ketoprofen

chiral pharmaceuticals, chiral analysis, non-steroidal anti-inflammatory drugs, ibuprofen, ketoprofen

SVOBODOVÁ, D.; ČÁSLAVSKÝ, J.

2012

17.08.2011

0009-2770

CHEMICKE LISTY

105

18

Česká republika

s982

s982

1