lead silicateの例文

• The lining had to be calcareous because lead reacts with silica ( clay compounds ) to form viscous lead silicate that prevents the needed absorption of litharge, whereas calcareous materials do not react with lead.
• My question is-what are the comparitive dangers of lead solder ( lead tin alloy ), and leaded glass ( lead oxide in silicate / lead silicate )-specifically in landfills or other waste disposal-or more specifically does leaded glass leach lead to any extent ? ( refs please if possible ).