ISO 17294-2:2023 水的质量 电感耦合等离子体质谱法（ICP-MS）的应用 第2部分：选定的元素（包括铀同位素）的测定
标准编号：ISO 17294-2:2023
中文名称：水的质量 电感耦合等离子体质谱法（ICP-MS）的应用 第2部分：选定的元素（包括铀同位素）的测定
英文名称：Water quality — Application of inductively coupled plasma mass spectrometry (ICP-MS) — Part 2: Determination of selected elements including uranium isotopes
发布日期：2023-10
标准范围
本文件规定了元素铝、锑、砷、钡、铍、铋、硼、镉、铯、钙、铈、铬、钴、铜、镝、铒、钆、镓、锗、金、铪、钬、铟、铱、铁、镧、铅、锂、镥、镁、锰、汞、钼、钕、镍、钯、磷、铂、钾、镨、铽、碲、铊、铥、锡、钛、钨、铀及其同位素、钒、钇、镱、锌和锆的测定方法考虑到特定的和额外发生的干扰，这些元素可以在水中以及水和污泥的消化物中测定（例如。g.ISO中描述的水的消化？15587-1还是ISO？15587-2).工作范围取决于基质和遇到的干扰。在饮用水和相对未受污染的水中，定量的极限？（LOQ）介于0,002？μ g/l和1.0？大多数元素为μ g/l（见表？1）。根据元素和规定的要求，工作范围通常涵盖几ng/l和mg/l之间的浓度。大多数元素的定量限受空白污染的影响，主要取决于可用的实验室空气处理设施、试剂的纯度和玻璃器皿的清洁度。在测定受到干扰（见条款？5）或记忆效应（见ISO？17294-1）的情况下，定量下限较高。如果文件的用户能够适当地验证该方法（例如干扰、灵敏度、重复性、回收率），也可以根据该文件确定范围中提及的元素以外的元素。
This document specifies a method for the determination of the elements aluminium, antimony, arsenic, barium, beryllium, bismuth, boron, cadmium, caesium, calcium, cerium, chromium, cobalt, copper, dysprosium, erbium, gadolinium, gallium, germanium, gold, hafnium, holmium, indium, iridium, iron, lanthanum, lead, lithium, lutetium, magnesium, manganese, mercury, molybdenum, neodymium, nickel, palladium, phosphorus, platinum, potassium, praseodymium, rubidium, rhenium, rhodium, ruthenium, samarium, scandium, selenium, silver, sodium, strontium, terbium, tellurium, thorium, thallium, thulium, tin, titanium, tungsten, uranium and its isotopes, vanadium, yttrium, ytterbium, zinc and zirconium in water (e.g. drinking water, surface water, ground water, waste water and eluates).
Taking into account the specific and additionally occurring interferences, these elements can be determined in water and digests of water and sludge (e.g. digests of water as described in ISO 15587-1 or ISO 15587-2).
The working range depends on the matrix and the interferences encountered. In drinking water and relatively unpolluted waters, the limit of quantification (LOQ) lies between 0,002 μg/l and 1,0 μg/l for most elements (see Table 1). The working range typically covers concentrations between several ng/l and mg/l depending on the element and specified requirements.
The quantification limits of most elements are affected by blank contamination and depend predominantly on the laboratory air-handling facilities available on the purity of reagents and the cleanliness of glassware.
The lower limit of quantification is higher in cases where the determination suffers from interferences (see Clause 5) or memory effects (see ISO 17294-1).
Elements other than those mentioned in the scope can also be determined according to this document provided that the user of the document is able to validate the method appropriately (e.g. interferences, sensitivity, repeatability, recovery).
标准预览图
