·In the twenty years that the Clean Air Act has mandated unleaded gas use in the United States the lead accumulation worldwide has decreased significantly A study published recently in the journal Nature shows that air borne leaded gas emissions from the United States were the leading contributor to the high concentration of lead in the snow in Greenland
·The quality of the chemical starting points for small molecule drug discovery is a key factor in improving the likelihood of clinical success In this article experts from several organizations
·Lead can also interact with both acid as well as base It has a low melting point and located above hydrogen in the electromotive series Although the existence of lead is indicated in nature but human activities has been found as the main reason for increasing lead content in the environment Shahid et al 2015
·Crop plants are severely affected by heavy metals HMs leading to food scarcity and economical loss Lead Pb is outsourced by use of lead based fertilizers batteries mining smelting and
·Currently an investigation of archeological findings about lead white in east Eurasia is lacking to clarify the nature and synthesis method of lead white during the first millennium BCE
·The importance of this numbers becomes more clear if we consider that by adding mg kg −1 of lead perovskite we increased the effective lead concentration of natural soil by only 10%
· The lead debate The risks arising from the use of lead ammunition and the measures taken to mitigate these have prompted intense discussion between stakeholder groups in the UK Newth Cromie & Kanstrup 2015 Shooting is a long standing activity with established practices and traditions and is undertaken for a variety of purposes
3 ·Elemental lead can also be oxidized to the Pb 2 ion by hydrogen ions but the insolubility of most salts of Pb 2 makes lead resistant to attack by many acids Oxidation under alkaline conditions is easier to effect and is favoured by the formation of the soluble species of lead in the 2 oxidation oxide PbO 2 with lead as the Pb 4 ion is among the
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