Maintaining high levels of drug quality and safety is priority for the pharmaceutical industry. Pharmacopoeias have documented these standards as officially acknowledged pharmaceutical rules.

Ion exchange chromatography (IEX) is a versatile and widely used technique for separating biomolecules based on charge. It plays a critical role in protein purification in research and ...

AOX has been a vital part of wastewater monitoring since the early 1990s. It was developed as a sum parameter to define the quantity of (non-polar) chlorinated hydrocarbons. This type of substance can ...

As a highly flexible technique, ion chromatography (IC) has many practical applications in the pharmaceutical field. This article reviews some relevant trends and recent developments in IC application ...

IN two previous communications, we 1,2 have shown that a mixture of phenobarbitone, acetophenetidin, salicylate and p-acetylaminophenol can be separated in 60–75 min. by a combined technique of ...

WE have found that, when a mixture containing barbiturate, salicylate and acetophenetidin is subjected to chromatography on Whatman No. DE20 cellulosic ion-exchange paper in dilute ammonia solution, a ...