上海红色冶炼厂已生产出钢瓶装的一氧化二氮气体(俗称笑气)。此种气体目前有三大用途:第一,用于原子吸收光谱分析。通常用一般的空气—乙炔火焰只能测定三十多种元素,而一些难熔元素,例 B、Al、Si、Ti、V、Ta、Nb、Zr、Hf、W 等等须采用一氧化二氮 Shanghai Red Smelter has produced cylinders of nitrous oxide gas (commonly known as nitrous oxide). This gas currently has three major uses: First, for atomic absorption spectrometry. In general, only thirty elements can be measured with the general air-acetylene flame, while some refractory elements such as B, Al, Si, Ti, V, Ta, Nb, Zr, Hf, nitrogen