ISO 15587-1:2002 水质-测定水中选择元素消化力-第一部分：王水消化力

标准编号：ISO 15587-1:2002

中文名称：水质-测定水中选择元素消化力-第一部分：王水消化力

英文名称：Water quality — Digestion for the determination of selected elements in water — Part 1: Aqua regia digestion

发布日期：2002-03

标准范围

ISO 15587的这一部分规定了使用王水作为消解剂从水样中提取微量元素的方法。该方法适用于悬浮物质量浓度小于20g/l、以碳表示的总有机碳（TOC）质量浓度小于5g/l的各类水体。王水消化法是经验性的，可能不会完全释放元素。然而，对于大多数环境应用，结果符合目的。王水消解适用于:Ag、Al、As、B、Ba、Be、Ca、Cd、Co、Cr、Cu、Fe、Hg、K、Mg、Mn、Mo、Na、Ni、P、Pb、Sb、Se、Sn、Sr、Tl、V、Zn的释放。它不适用于难熔化合物如SiO2、TiO2和Al2O3的消化。消解溶液中氯化物的存在可能限制分析技术的应用。该方法是通用的，并且可以使用多种设备实施，条件是消化组合物不变，消化温度是已知的，并且消化持续时间与该温度一致。

This part of ISO 15587 specifies a method for extracting trace elements from a water sample using aqua regia as a digestion agent. The method is applicable to all types of waters with a suspended solids mass concentration of less than 20 g/l and a mass concentration of total organic carbon (TOC) expressed as carbon of less than 5 g/l.The aqua regia digestion method is empirical and it might not release elements completely. However, for most environmental applications, the result is fit for purpose.Aqua regia digestion is suitable for the release of: Ag, Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Mo, Na, Ni, P, Pb, Sb, Se, Sn, Sr, Tl, V, Zn. It is not suitable for the digestion of refractory compounds such as SiO ₂, TiO₂ and Al₂O₃. The presence of chloride in the digestion solution may limit the application of analytical techniques.The method is generic and may be implemented using a wide variety of equipment provided the digestion composition is unchanged, the digestion temperature is known, and the digestion duration is in accordance with this temperature.

标准预览图