Heavy metal exposure remains a significant public health problem, particularly in sub-Saharan Africa where use of artisanal cookware made from recycled metallic materials is still common. In this study, the effect of ...Heavy metal exposure remains a significant public health problem, particularly in sub-Saharan Africa where use of artisanal cookware made from recycled metallic materials is still common. In this study, the effect of cookware composition, cleaning material, heating duration and temperature on metal migration from different cookware, including artisanal pans was investigated. Trace element concentrations were determined with Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). Locally fabricated cookware leached the highest levels of metals, where the levels of Pb (9.00 ± 0.80 × 10<sup>-2</sup> mg/l), Al (11.40 ± 0.02 × 10<sup>-2</sup> mg/l), Cd (5.80 ± 0.30 × 10<sup>-2</sup> mg/l), Cr (6.60 ± 0.03 × 10<sup>-2</sup> mg/l) and Ni (3.00 ± 0.01 × 10<sup>-2</sup> mg/l) were above the WHO permissible limits of heavy metals for drinking water. Steel wire was the most aggressive cleaning material to the cookware surfaces, followed by sand and then ash. For cookware heated at 100°C and above, an exponential relationship between temperature and the migration of Al, Pb and Cd was observed. The findings revealed heavy metal exposure from cookware usage, which poses potential health risks to the population. There is need for policies and civic education to minimize this exposure.</sup>展开更多
High-quality cookware makes life easier for families in Xizang,From an aerial view,Xizang Autonomous Region unfolds like a vast,breath-taking canvas.Snow-capped peaks glisten under the sun,turquoise lakes shimmer like...High-quality cookware makes life easier for families in Xizang,From an aerial view,Xizang Autonomous Region unfolds like a vast,breath-taking canvas.Snow-capped peaks glisten under the sun,turquoise lakes shimmer like scattered jewels,and endless grasslands stretch across what is known as the Roof of the World.Yet beneath this magnificent beauty lies a challenge that has shaped daily life in the region for generations.展开更多
文摘Heavy metal exposure remains a significant public health problem, particularly in sub-Saharan Africa where use of artisanal cookware made from recycled metallic materials is still common. In this study, the effect of cookware composition, cleaning material, heating duration and temperature on metal migration from different cookware, including artisanal pans was investigated. Trace element concentrations were determined with Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). Locally fabricated cookware leached the highest levels of metals, where the levels of Pb (9.00 ± 0.80 × 10<sup>-2</sup> mg/l), Al (11.40 ± 0.02 × 10<sup>-2</sup> mg/l), Cd (5.80 ± 0.30 × 10<sup>-2</sup> mg/l), Cr (6.60 ± 0.03 × 10<sup>-2</sup> mg/l) and Ni (3.00 ± 0.01 × 10<sup>-2</sup> mg/l) were above the WHO permissible limits of heavy metals for drinking water. Steel wire was the most aggressive cleaning material to the cookware surfaces, followed by sand and then ash. For cookware heated at 100°C and above, an exponential relationship between temperature and the migration of Al, Pb and Cd was observed. The findings revealed heavy metal exposure from cookware usage, which poses potential health risks to the population. There is need for policies and civic education to minimize this exposure.</sup>
文摘High-quality cookware makes life easier for families in Xizang,From an aerial view,Xizang Autonomous Region unfolds like a vast,breath-taking canvas.Snow-capped peaks glisten under the sun,turquoise lakes shimmer like scattered jewels,and endless grasslands stretch across what is known as the Roof of the World.Yet beneath this magnificent beauty lies a challenge that has shaped daily life in the region for generations.
