手持式光谱仪属于X射线荧光光谱仪，同样属于原子发射光谱仪，但和直读光谱的激发方式不一样，直读光谱靠高压放电激发，X射线是通过X光管来激发，接收原件也不同，检测元素范围和精度低于直读光谱，但应用于合金材料牌号鉴别以及混料筛选，废料回收，野外材料牌号鉴别有特殊用途，因可以做的小巧，一般做成手持式，方便携带。
The handheld spectrometer belongs to the X-ray fluorescence spectrometer and also belongs to the atomic emission spectrometer, but it is different from the excitation mode of the direct reading spectrum. The direct reading spectrum is excited by the high-voltage discharge. The X-ray is excited by the X-ray tube, and the receiving elements are also different. The scope and accuracy of the detection elements are lower than the direct reading spectrum, but it is used for alloy material brand identification, mixture screening, waste recycling and field The identification of foreign material brand has special use, because of its small size, it is generally made into a hand-held, convenient to carry.