Detection of Toxic Heavy Metal, Co(II) Trace via Voltammetry with Semiconductor Microelectrodes

Abstract

The cobalt (Co(II)) ion is a main component of alloys and considered to be carcinogenic, especially due to the carcinogenic and toxicological effects in the aquatic environment. The toxic trace of the Co(II) detection was conducted using the infrared photodiode electrode (IPDE) using a working electrode, via the cyclic and square-wave anodic stripping voltammetry. The results indicated a sensitive oxidation peak current of Co(II) on the IPDE. Under the optimal conditions, the common-type glassy carbon, the metal platinum, the carbon paste, and the carbon fiber microelectrode were compared with the IPDE in the electrolyte using the standard Co(II). The IPDE was found to be far superior to the others.

Personal-Care Cosmetic Practices in Pakistan: Current Perspectives and Management

“…Research has revealed that there is an increased chance of cancer after exposure to genotoxic metals, such as chromium VI, cobalt, and nickel, in cosmetic products. [68][69][70][71][72][73] In other studies, heavy metals, such as lead, cadmium, and chromium, in pigments of lipstick, eye shadow, lip makeup, and face powder may lead to cancerous and noncancerous effects on human health. 70,74 Use of commercially available moisturizing creams increases the chances of tumor formation when applied topically to UVB-pretreated high-risk mice.…”