水质.用石墨炉原子吸收光谱法测定痕量元素

[中文适用范围]： 本国际标准包括测定下列物质中痕量含量的原则和程序：Ag、Al、As、Cd、Co、Cr、Cu、Fe、Mn、Mo、Ni、Pb、Sb、Se、Tl、V 和 Zn地表水、地下水、饮用水、废水和沉积物，在石墨炉中使用原子吸收光谱法和电热雾化法。 该方法适用于低浓度元素的测定。 该方法对每种元素的检测限取决于样品基质以及仪器、雾化器的类型和化学修饰剂的使用。 对于具有简单基质（即低浓度溶解固体和颗粒）的水样，方法检测限将接近仪器检测限。 表 1 给出了 20 µl 样品体积的最小可接受检测限值。 [外文原描述]： ISO 15586:2003 includes principles and procedures for the determination of trace levels of: Ag, Al, As, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Sb, Se, Tl, V, and Zn in surface water, ground water, drinking water, wastewater and sediments, using atomic absorption spectrometry with electrothermal atomization in a graphite furnace. The method is applicable to the determination of low concentrations of elements. The detection limit of the method for each element depends on the sample matrix as well as of the instrument, the type of atomizer and the use of chemical modifiers. For water samples with a simple matrix (i.e. low concentration of dissolved solids and particles), the method detection limits will be close to instrument detection limits. The minimum acceptable detection limit values for a 20-microlitre sample volume are specified.