The standard states that the citric acid-sodium nitrate treatment is the least hazardous for removal of free iron and other metallic contamination and light surface contamination.
该标准声明：柠檬酸-硝酸钠处理在去除游离铁合其他金属污染和轻的表面污染物时，危险性最低。
3
Single crystals of sodium tungsten bronzes with cubic perovskite structure were grown by fused sale electrolysis. The crystals have a metallic conducting behavior.