Selective Extraction-Photometric Determination of Non-Steroidal Anti-Inflammatory Drugs

The possibility of extracting ion associates (IAs) of some non-steroidal anti-inflammatory drugs with the polymethine dye Astrafloxin was studied. The influence of medium pH, electrolyte concentration, nature of the extractant, and other factors on the IA extraction efficiency was established. Their selective determination in combined preparations was shown to be achievable by regulating the extraction conditions. The main chemical analytical and metrological characteristics of the developed methods were calculated.