New cartridges test potentially high arsenic water

Scientists of the Siberian Federal University (SFU) have created a new simple method for monitoring water quality, with

with which you can easily detect two forms of arsenic (III and V).

The advantage of the new test is that it doesn't needsample preparation using acids, toxic solvents and high temperatures. You only need two cartridges filled with sorbents (absorbers), which were developed in the laboratory of the Siberian Federal University. The creation of these substances was a key step in the research.

The uniqueness of the new sorbents lies in their simplicitytheir synthesis. To obtain them, only aqueous solutions are needed using available reagents: cheap, widespread, non-toxic. The technology does not use substances such as toluene, acetonitrile, carbon disulfide, siloxanes and other raw materials used in chemical surface modification.

Svetlana Didukh-Shadrina, Associate Professor of the Department of Physical and Inorganic Chemistry, Institute of Non-Ferrous Metals and Materials Science, Siberian Federal University

The authors created sorbents using layer-by-layermethod of applying organic reagents to inorganic oxides: for this, they took common inorganic oxides and applied two successive layers to their surface.

As the experts explained, polyamines have a positive charge. Such sorbents efficiently extract negatively charged forms, which include arsenic (V), from aqueous solutions.

The result is a sorbent that is a unique base for creating a wide class of sorbents with desired properties.

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