Using absorbance as a measure of turbidity in highly caustic solutions
MetadataShow full item record
This note shows that the dissolution of kaolin and its subsequent re-crystallization as DSP can be monitored using a simple UV–vis method that measures the turbidity of the system. The method is shown to be accurate, reproducible and sensitive. The dissolution of kaolin can be accurately determined by way of a solids calibration curve and this is supported by simultaneous measurements of the dissolved silicate by an inductively coupled plasma (ICP) technique. Additionally, turbidity is often used to measure induction times of nucleation thus the method can monitor dissolution and nucleation simultaneously. It must be remembered, however, that turbidity will show different behaviour to ICP when phenomena such as settling and aggregation occur thus these processes must be considered when interpreting data. Finally, the size limit of the turbidimetric technique must be determined as this, too, can influence the interpretation of data.
Showing items related by title, author, creator and subject.
Spatial and temporal variations in turbidity on two inshore turbid reefs on the Great Barrier Reef, AustraliaBrowne, Nicola; Smithers, S.; Perry, C. (2013)This study describes the natural turbidity regimes at two inshore turbid reefs on the central Great Barrier Reef where wind-driven waves are the main agent of sediment resuspension. Many corals on inshore turbid reefs ...
The effects of suspended sediment on coral reef fish assemblages and feeding guilds of north-west AustraliaMoustaka, M.; Langlois, T.; McLean, D.; Bond, T.; Fisher, R.; Fearns, Peter; Dorji, Passang; Evans, R. (2018)© 2018 Springer-Verlag GmbH Germany, part of Springer Nature Understanding environmental drivers of fish assemblage composition is fundamental to designing useful management plans for anthropogenic activities. This study ...
The photo-physiological costs associated with acute sediment stress events in three near-shore turbid water coralsBrowne, Nicola; Precht, E.; Last, K.; Todd, P. (2014)Many coral reef communities thriving in inshore coastal waters characterised by chronically high natural turbidity (>5 mg l-1) have adapted to low light (<200 µmol photons m-2 s-1) and high sedimentation rates (>10 mg ...