Can a UV spectrophotometer measure polyacrylamide concentration?

This study presents a method for quantification of polyacrylamide concentration using an in-line UV–vis spectrophotometer that can generate real-time data. Absorbance spectra of seven polymers were established in the wavelength range of 191.5–750 nm and the highest absorbance was recorded at 191.5 nm for all polymers.

How to determine acrylamide based polymer concentration?

Many methods have been reported on the determination of acrylamide-based polymer concentrations [ ], including nitrogen-measurement method, nitrgon-bromination method, turbidimetry method, gel permeation chromatography method, viscosity measurement,

How to determine polyacrylamide concentration based on nitrogen digestion method?

Nitrogen digestion method was set up to determine polyacrylamide concentrations based on the measurement of nitrogen content in the polymer solution that is in proportion to the polymer concentration ( Chen et al., 2016).

Do polyacrylamide polymers absorb light?

The results from this study indicate that polyacrylamide polymers used for water and wastewater treatment strongly absorb light in the 191.5–230 nm wavelength range, and the peak absorbance was measured at 191.5 nm for all of the seven polymers tested in this study.

Are polyacrylamides toxic?

Although the polymers are relatively nontoxic, for health concerns, the use of polyacrylamides especially in drinking water and also wastewater has been subjected to closer evaluation during the last decade.

What is the rate of polyacrylamide polymerization?

According to Lin, the rate of polyacrylamide polymerization was reported to be very low at temperature < 45 ° C. The rate of polymerization increased with the temperature due to the increasing rate of primary free radicals production that initiated the polyacrylamide polymerization .