标准摘要
[中文适用范围]： 本文件规定了在仪器分析中背景噪声占主导地位的情况下，ISO 11843 中基本概念的实际应用。本文件规定了提取背景噪声随机属性的基本方法，利用随机属性估算响应变量的 SD 或 CV，并基于上述 SD 或 CV 计算最小可检测值。本文件中描述的方法可用于检查各种类型的测量设备对某种物质的检测结果，在这些设备中，仪器输出的背景噪声比其他测量不确定度来源更占主导地位。可行的选择包括可见光和紫外吸收光谱法、原子吸收光谱法、原子荧光光谱法、发光光谱法、液相色谱法和气相色谱法。 [外文原描述]： This document specifies the practical use of the fundamental concepts in ISO 11843 in case of the background noise predominance in instrumental analysis. This document specifies basic methods to — extract the stochastic properties of the background noise, — use the stochastic properties to estimate the SD or CV of the response variable, and — calculate the minimum detectable value based on the SD or CV obtained above. The methods described in this document are useful for checking the detection of a certain substance by various types of measurement equipment in which the background noise of the instrumental output predominates over the other sources of measurement uncertainty. Feasible choices are visible and ultraviolet absorption spectrometry, atomic absorption spectrometry, atomic fluorescence spectrometry, luminescence spectrometry, liquid chromatography and gas chromatography.
英文名称Capability of detection — Part 7: Methodology based on stochastic properties of instrumental noise