![]() The study determined that approximately 56.14% of the hexavalent chromium inhaled during the spray-painting process was deposited in the upper respiratory system of the head airway region, followed by the alveolar and tracheobronchial regions, with fractions of 11.93 and 0.05%, respectively. The total hexavalent chromium concentration was 1163.01 ng/m 3, and the individual particle sizes (PM 1-2.5, PM 1, and PM 0.25) were strongly and positively correlated with the Cr(VI) concentrations for PM 2.5. Significantly, the mean concentrations of Pb and As exceeded OSHA's permissible exposure limits (PELs) of 0.05 and 0.01 mg/m 3, respectively. The mean concentration of the total metals for all particle sizes was 109.1 ± 12.0 μg/m 3, and those for lead (496,017.0 ng/m 3) and iron (252,123.8 ng/m 3) were the highest of metal elements. The mass concentration of total particulate matter (PM) exposure to workers was 20.01 ± 10.78 mg/m 3, which exceeds OSHA's permissible exposure level of 15 mg/m 3. The results found these concentrations of 12 VOCs to be below the short-term exposure limit (STEL) established by the US Occupational Safety and Health Administration (OSHA). “Chrom(VI)-oxid” By BXXXD – Own work (CC BY-SA 3.The study investigated the exposure of spray painters to organic solvents, toxic metals, and hexavalent chromium over 21 working days in 2017. “Laidlaw school bus” (Public Domain) via Commons WikimediaĢ. The key difference between chromium and hexavalent chromium is that chromium is a chemical element whereas hexavalent chromium is any compound having chromium in its +6 oxidation state. Summary – Chromium vs Hexavalent ChromiumĬhromium is a chemical element having atomic number 24. But, in hexavalent compounds, the chromium is essentially in the +6 oxidation state. ![]() Chromium can exist in different oxidation states, but the most stable and common states are +3 and +6. ![]() Moreover, we can symbolize chromium as Cr, but the symbol for hexavalent chromium is Cr(VI) or chromium-6. What is the Difference Between Chromium and Hexavalent Chromium?Ĭhromium is a chemical element having atomic number 24. A strong oxidizing agent compared to molybdenum and tungsten oxides.The common oxidation states are +3 and +6.Density is about seven times more than the density of water.Exists in the solid phase at standard temperature and pressure.Some chemical properties of chromium are as follows: Furthermore, the major characteristics that cause its high value are high corrosion resistance and hardness. It is important as the main additive for iron alloys such as stainless steel. We can categorize it as a transition metal it is hard but brittle. Further, this element is the first chemical element of group 6 in the periodic table. It is a metal having a silvery metallic appearance. ![]() Side by Side Comparison – Chromium vs Hexavalent Chromium in Tabular FormĬhromium is a chemical element having atomic number 24. Thus, this means the hexavalent chromium compound has chromium atoms that have 6 electrons removed from the outermost orbitals. The metal occurs in the +6 oxidation state. The term hexavalent chromium refers to compounds containing chromium. The key difference between chromium and hexavalent chromium is that chromium is a chemical element whereas hexavalent chromium is any compound having chromium in its +6 oxidation state.Ĭhromium is a metal that is very useful in the production of alloys. ![]()
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