地方病俗称“水土病”,可见此类疾病与地理环境(包括水、土、粮)的化学组成关系十分密切。土壤是环境的基本因素,它直接影响水质和作物的化学组成,并由此影响人畜的健康。因此,分析土壤中的微量元素(包括必需元素和有害元素)是地方病研究中必不可少的环节。 用原子吸收分光光度计(AAS)测定土壤中的微量元素,仪器价廉,方法简便,即使基层单位也易于推广。 Local disease known as “water and soil disease” shows that such diseases and the geographical environment (including water, soil, grain) chemical composition is very close. Soil is a fundamental environmental factor that directly affects water quality and the chemical composition of the crop, thereby affecting the health of humans and animals. Therefore, the analysis of soil trace elements (including essential elements and harmful elements) is an essential part of endemic disease research. Determination of trace elements in soil with atomic absorption spectrophotometer (AAS), inexpensive instruments, the method is simple, even the grassroots units are also easy to promote.