Featured Application - Measure Saccharin in Water
Under appropriate conditions, near-infrared (NIR) spectroscopy can be used to measure low levels of organics in water. This application note will discuss measuring saccharin to levels below 60 ppm over a temperature range of 16°C to 32°C. Saccharin is used as a sweetener and preservative in pharmaceuticals, nutraceuticals, and food and as an agent in semiconductor plating baths. Molecules similar to saccharin, i.e. benzo substitued heterocyclic rings, are used in semiconductor cleaning solutions. These applications often are requires to know and control organic concentrations in water in the 100 ppm range and below. Another similar application is the measurement of total organics in wastewater streams. In that situation, NIR can be used as a high level alarm to detect breakthrough in wastewater treatment plants.
The methods discussed in the application note can be easily implemented on-line using current NIR analyzers. The approach applies to any molecule similar in structure to saccharin.
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