纳米制造 关键控制特性 石墨烯基材料 阴离子浓度：离子色谱法

[中文适用范围]： 本部分 IEC TS 62607 建立了一种标准化方法，用于通过离子色谱法测定石墨烯基材料粉末中的阴离子浓度。在本文件中，测量的阴离子包括氟化物、氯化物、亚硝酸盐、溴化物、硝酸盐、硫酸盐和磷酸盐。这些阴离子存在于石墨烯基材料的提取溶液中，通过离子色谱分离柱分离成不同的洗脱带，随后使用电导检测器进行测量。通过建立测量信号（峰面积或峰高）与每种阴离子浓度之间的比例关系，使用一系列含有已知量每种阴离子的标准品校准系统，实现对未知样品中阴离子浓度的测定。本文件涉及的石墨烯基材料粉末包括氧化石墨烯、还原氧化石墨烯、功能化石墨烯、石墨烯、双层石墨烯、三层石墨烯和少层石墨烯。注：本文件也可用于其他碳质材料，如石墨和氧化石墨。本文件针对石墨烯基材料制造商和下游用户，指导其材料设计、生产和质量控制。 [外文原描述]： IEC TS 62607-6-30:2024 establishes a standardized method to determine the chemical key control characteristic - anion concentration for powder of graphene-based material by - ion chromatography. In this document, the measured anions are fluoride, chloride, nitrite, bromide, nitrate, sulphate, and phosphate. These anions, present in the extraction solution of graphene-based materials, are separated into distinct elution bands on the ion chromatographic separation column and subsequently measured using a conductivity detector. Quantification of these anions is accomplished by establishing a proportional relationship between the measured signal (peak area or peak height) and the concentration of each anion. This is achieved by calibrating the system using a series of standards containing known amounts of each anion. Subsequently, unknown samples are analysed under the same conditions as the standards to determine their anion concentrations. - Powder of graphene-based material addressed by this document includes graphene oxide, reduced graphene oxide and functionalized graphene, graphene, bilayer graphene, trilayer graphene and few-layer graphene. Note: This document can also be used for other carbonaceous material such as graphite and graphite oxide. - This document targets graphene-based material manufacturers and downstream users to guide their material design, production and quality control.