空气-乙炔焰原子吸收光谱法测定硅酸盐岩石中钙、镁,必须抑制造岩元素硅、铝、钛等元素的干扰,一般加锶盐、镧盐作抑制剂,但大量硅仍需分离。早期文献已指出N_2O-C_2H_2高温火焰中,干扰大大减少。本实验用自制笑气,研究笑 Air-acetylene flame atomic absorption spectrometry for the determination of calcium and magnesium in silicate rocks must suppress the interference of rock-forming elements such as silicon, aluminum and titanium. Strontium salts and lanthanum salts are generally added as inhibitors, but a large amount of silicon still needs to be separated . Earlier literature has pointed out that in the N 2 O 2 -C 2 H 2 flame, the interference is greatly reduced. The experiment with homemade laughter, study laughter