自来水中的砷对人有较大危害,因此,对它的检测是十分有必要的。本文采用原子荧光法测定自来水中的砷,介绍了测定中需要的材料及方法,绘制了砷的标准曲线,实验表明砷在1.0～10.0μg/L范围内线性关系较好,并测定了检出限及样品回收率,取得了较好的结果。该方法测定自来水中的砷是可行、可靠的,值得参考借鉴。 Arsenic in tap water is more harmful to people, so it is very necessary to detect it. In this paper, the determination of arsenic in tap water by atomic fluorescence spectrometry, the required materials and methods for the determination were introduced and the standard curve of arsenic was drawn. The experimental results show that the linear relationship of arsenic in the range of 1.0 ~ 10.0μg / L is good, Limit and sample recovery, and achieved good results. The method for determination of arsenic in tap water is feasible and reliable, which is worth learning from.