The principle,feature of recently developed Model BY-Ⅰ microelements analysis instrument are introduced,and its hardware, software,and functions as well. The instrumentcan measure several one-billionth of trace elements.The relative error is 3~10%.The diversity is less than 10%. The price of this instrument is only several one-tenth of that of those large precision instrument,such as atom absorb spectrum.It has great practical meaning and can be widely used in the field of medicine,environmental protection,...
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