The C2-Symmetry Colorimetric Dye Based on a Thiosemicarbazone Derivative and its Cadmium Complex for Detecting Heavy Metal Cations (Ni2+, Co2+, Cd2+, and Cu2+) Collectively, in DMF

A facile synthesis of a novel 4-hydroxyl-3-azo coumarin based colorimetric probes for detecting Hg2+ and a fluorescence turn-off response of 3CBD to Fe3+ in aqueous environment

“…23 Heavy metals in particular, have been the primary concerns, due to their adverse effects on the ecosystem, mostly on human wellbeing, once their concentration is above threshold. 21,24,25 Moreover, heavy metals such as dissolved elemental mercury are some of the most toxic cations to human physiological systems, with effects which can lead to sudden deaths. 26,27…”

“…[6][7][8][9][10] Industrial revolutions have been at the center of environmental pollution, especially in the areas such as agriculture for synthetic fertilizers 9,11,12 and pesticides, 8,13,14 food technology, [15][16][17] lm industries 9,18-20 and many others. 6,9,21,22 In essence, the ever-increasing presence of dissolved cations and anions in environmental streams, has become the main source of primary consumption of toxic substances. The presence of dissolved substances in environmental stream have become a serious concern with regard to health hazards, raising concerns even on United Nation agendas, the sustainable development goals.…”

“…23 Heavy metals in particular, have been the primary concerns, due to their adverse effects on the ecosystem, mostly on human wellbeing, once their concentration is above threshold. 21,24,25 Moreover, heavy metals such as dissolved elemental mercury are some of the most toxic cations to human physiological systems, with effects which can lead to sudden deaths. 26,27 Furthermore, mercury(II) ion, a heavy metal, poses significant environmental toxicity, 28,29 even at low concentrations, mercury(II) can cause severe harm to both animals and the human body, usually leading to damage to vital organs like the brain and the potential development of chronic diseases, ultimately resulting in death.…”

Simple Fluorescence Sensing Approach for Selective Detection of Fe3+ Ions: Live-Cell Imaging and Logic Gate Functioning

“…The development of facile and selective chemosensors for different transition metal ions has gained considerable attention due to their potential applications in chemical and biological streams. 1 − 3 Chemosensors can be either organic or inorganic compounds that are capable of selectively detecting the metal ion of interest with the change of associated properties. Different types of chemosensors have been produced till date.…”

a Versatile Schiff Base Chemosensor for the Determination of Trace Co2+, Ni2+, Cu2+, and Zn2+ in the Water and Its Bioimaging Applications

“…As is known to all, doubly charged metal ions such as Co 2+ , Ni 2+ , Cu 2+ , and Zn 2+ play important roles in the environment and biologic processes, especially in maintaining human nutrition and health . For instance, an excess of Co 2+ could lead to vasodilatation and cardiomyopathy, , Similarly, an overload of Ni 2+ would result in asthma, angina, or other cardiac symptoms .…”