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铅是对人体健康十分有害的元素。人若经常食用含铅量高的食品,易引起多种疾病,因此铅被称为“隐性杀手”。实验研究表明,血铅水平每增加10ug/dl,智商下降1～3分。目前现行标准中对于铅含量的测定普遍采用国家标准(GB/T5009.12-2003)第一法石墨炉原子吸收光谱法,由于在具体的分析中受到的干扰因素较多,要得到准确可靠的检测结果,需要注意几个关键环节。1方法原理
Lead is a very harmful element to human health. If people often eat foods high in lead content, easy to cause a variety of diseases, lead is called “hidden killer ”. Experimental studies show that blood lead levels for each additional 10ug / dl, IQ decreased by 1 to 3 points. The current standard for the determination of lead commonly used in national standards (GB / T5009.12-2003) the first method of graphite furnace atomic absorption spectrometry, due to the interference in the specific analysis of many factors to be accurate and reliable Test results, need to pay attention to several key aspects. 1 method principle