In this article,the principle of atomic absorption spectrometry and construction of this analyzer are introduced,so that we can exchange and improve our related knowledge as the users increase.

The exposure of lead in environment has caused a major public health problem all over the globe.Because of rapid industrialization and constant existence of lead in environment,it is necessary to screen,monitor and intervene in the content of lead of human body during a long time.The toxical and harmful influence of lead on human body,especially on children are expounded.The content index of lead in the body set by international and national standards as well as its evaluation basis are included.The most frequently used testing method of blood lead is also described: atomic absorption spectrometry and its operative process.