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加速溶剂萃取技术(简称ASE)是一种全新的高效样品前处理方法.常用的有机溶剂由泵注入已填充样品的萃取池后,加温加压,数分钟后,萃取液由载气吹入收集瓶中供分析.萃取全过程实现自动化,并且可以多次萃取,快速省时,溶剂消耗量少.分析土壤、淤泥等固体样品中的除草剂,首先要将其从基体中提取出来.从前,这一工作需要大量有机溶剂.然而在近期环境法规将就世界范围内实验室的有机溶剂用量作出许多严格的规定.例如:在美国,最近颁布的行政法规减少了联邦实验室内50—90%的溶剂用量.因此,由美国DIONEX(戴安)公司推出的减少溶剂用量的固体样品前处理方法——加速溶剂萃取应运而生.
Accelerated solvent extraction (ASE) is a new and highly efficient method for sample preparation, where the commonly used organic solvent is injected into the cell where the sample has been filled by a pump and then heated and pressurized. After a few minutes, the extract is blown into the carrier gas Collect bottles for analysis. The entire extraction process is automated and can be extracted multiple times, quickly saving time and consuming less solvent. Analyzes of herbicides in solid samples, such as soil and silt, are first extracted from the matrix , A large organic solvent is required for this work.However, in the near future, environmental regulations will place strict rules on the amount of organic solvents used in laboratories around the world.For example, in the United States, the recently enacted administrative regulations have reduced the number of federal laboratories within the 50-90 % Of the amount of solvent.Therefore, by the United States DIONEX (Diane) introduced to reduce the amount of solvent solid sample preparation method - accelerated solvent extraction came into being.