Label-free heavy metal ion sensing via smartphone based app.

The proliferation of heavy metal ions in water has been a serious problem that has been escalating day by day. Rapid detection of these ions in an aqueous solution is of immense significance to keep them within permissible limit. To address the growing concentration of heavy metal ions, we report a facile and cost-effective sensing scheme.

Chitosan-the miracle biomaterial as detection and diminishing mediating agent for heavy metal ions: A mini review.

Proliferation of heavy metal ions as aquatic pollutants has been a matter of growing concern now a days. Several anthropogenic activities have fueled higher concentration of heavy metal ions in aquatic bodies above threshold values, as set by World Health Organization. Of late, chitosan for its exquisite properties has been widely used in tackling this burning problem of aquatic pollution caused by heavy metal ions.