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LINK: Arsenic Speciation in Soils and Sediments (pdf)

LINK: Trace (ppt level) Total Arsenic and Selenium Analysis (pdf)

LINK: Trace Metal Analysis

If you could predict the efficiency or identify the applicability of treatment processes before expending any resources on bench scale or pilot plant studies, what would that be worth?

Trace metals speciation analysis is a powerful tool to identify the exact molecular structure and the chemical equilibrium within the substrate. Upon identification of the exact chemicals, bench scale and process chemists can apply the information to identify appropriate treatment methods and efficiencies.

Basic contaminant and background information collected during the initial phase of the risk assessment must also be included in any interaction modeling as certain chemicals will also impact with the treatment process. Interferences may include competitive binding, induced solubility of flocculent and precipitates, increased buffering capacity, and encapsulation of active sites. By no means is the presented list exhaustive; therefore, the importance of an encompassing vision with regards to remediation cannot be over stressed.

In addition, stratification of contaminants through substrate columns can also results in varying treatment efficiencies. Substrate stratification is not limited to solid materials; rather, redox conditions within water columns can affect metals speciation which in turn, would affect coprecipitation efficiencies as associated with waste water treatment plants.

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