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As the ionic strength increases, the difference between the internal and external ion concentrations decreases and the gel shrinks. 16 Fourier Transform Raman Spectroscopy was performed to characterize the physicochemical property of the dissolvable polyacrylamide beads, as shown in Figure S3 (Supporting Information).
Measurement of polymers in water and wastewater is a major challenge, and there is currently no quick and simple method that can achieve this. This study presents a method for quantification of polyacrylamide concentration using an in-line UV–vis spectrophotometer that can generate real-time data.
