用于原子吸收光度计的锌空心阴极灯,其阴极多以锌铜合金制成。用能量最大值校准波长的方法对锌灯扫描,发现不仅在2139ｎｍ处有锌的共振线,且在3247ｎｍ处有铜的共振线,并有足够的发射强度。由此可见锌灯不仅发射锌的谱线,同时也发射出铜的谱线。故可用锌灯在3247ｎｍ处测?.. Zinc hollow cathode lamp for atomic absorption photometer, the cathode is made of zinc-copper alloy. Scanning the zinc lamp with a method of calibrating the wavelength of the energy maximum, it was found that there was not only a resonance line of zinc at 2139 nm but also a resonance line of copper at 3247 nm with sufficient emission intensity. This shows that zinc lamp not only emit zinc spectrum, but also emit copper spectrum. So zinc lamp can be measured at 3247nm.