BACKGROUND & OBJECTIVE Dengue virus (DV) has caused severe epidemics of dengue fever (DF) and dengue haemorrhagic fever (DHF) and is endemic all over India. We have earlier reported that exposure of mice to hexavalent chromium [Cr(VI)] compounds increased the severity of dengue virus infection. Trivalent chromium picolinate (CrP) is used worldwide as micronutrient and nutritional supplement. Th...

rinking water utilities face the challenge of addressing emerging water quality concerns to ensure adequate protection of public health, sometimes without final federal or state drinking water regulations. Total chromium, i.e., trivalent chromium [Cr(III)] plus hexavalent chromium [Cr(VI)], has been regulated by national drinking water regulations since 1975. The federal regulatory maximum cont...

Hexavalent chromium Cr(VI) is one of the forms of chromium that poses a health risk to humans because of its high acute toxicity and carcinogenic activity. Trivalent chromium Cr(III) is much less toxic and could be easily removed from wastewater as a solid by alkalinication and precipitation. Thus, developing effective technologies capable of reducing Cr(VI) to Cr(III) is of great importance f...

In this work, the pH conditions during chromium electrodeposition are investigated using a home-made microsensor and scanning electrochemical microscopy (SECM). Few studies have focused on measuring local metal none has been conducted electrodeposition. The novelty of work is study in very acidic (pH < 1) concentrated media (>1 mol·L−1). Along with several other determinants, key factor achievi...

Speciation of chromium (Cr) was demonstrated using microfluidic paper-based analytical devices (?-PADs) that permit the colorimetric determination hexavalent (Cr(VI)) and trivalent (Cr(III)) via online oxidation. The ?-PADs consist left right channels allow simultaneous measurements Cr(VI) total Cr based on reaction with 1,5-diphenylcarbazide (DPC). For Cr(VI), a sample solution directly reacte...

This contribution deals with the waste from the processes in which raw hide is transformed into leather, as well as with the waste generated during further leather processing and the final waste of leather industry, the worn-out shoes. All this waste, if deposited in the open-air dumps, represents a potential threat to human health, because it contains trivalent chromium (Cr III), which can oxi...