中南大学学报（自然科学版）2016，Vol.47Issue(11)：3658-3663,6.DOI:10.11817/j.issn.1672-7207.2016.11.006
矿物药朱砂加工流程中可溶性重金属含量的仿生提取-ICP-OES测定方法
Determination method of soluble heavy metals in mineral medicine cinnabaris in process of production and processing by ICP-OES with bionic extraction and microwave digestion technology
摘要
Abstract
Cinnabar samples with different processes in production and processing process were collected. Soluble heavy metals in cinnabaris were determined in the process of production and processing by inductively coupled plasma-optical emission spectrometry(ICP-OES) with bionic extraction and microwave digestion technology. The results show that 13 kinds of elements have excellent linearity over the range of 0.1−1 000.0 μg/L with a correlation coefficient of 0.990 1−1.000 0. Limits of detection are in the range of 0.089 3−16.041 4μg/L. Relative standard deviation DRS of the repeatability is less than 10.0%. DRS of precision is lower than 7.1%. Spike recoveries in the range of 83.0%−117.5%are obtained. In the process, the content of soluble heavy metals’ gradually reduces. With reference to green trade standards of importing&exporting medicinal plants&preparations, none of the samples surpass the legal limit for Cd in H-5 and Pb in H-3, H-4 and H-5. The bionic extraction-ICP-OES method is simple and fast, and it has high accuracy and high precision. This method provides reference for real-timely monitoring process quality with simultaneously detecting cinnabaris’ 13 kinds of soluble heavy metals in machining process. The method can help improve and determine the best cinnabaris’ production and processing processes.关键词
朱砂/仿生提取/ICP-OES法/重金属Key words
cinnabaris/bionic extraction/ICP-OES method/heavy metals分类
化学化工引用本文复制引用
蒋秋桃,曾丽,马杰,李文莉,丁野,李洁..矿物药朱砂加工流程中可溶性重金属含量的仿生提取-ICP-OES测定方法[J].中南大学学报（自然科学版）,2016,47(11):3658-3663,6.基金项目
国家科技部十二五专项(2014ZX09304-307)(Project(2014ZX09304-307) supported by the National Major Scientific and Technological Project during 12th Five-year Plan Period) （2014ZX09304-307）
