Undergraduate Thesis Or Project
 

A screening method for the essential oils in hops using solid-phase microextraction

公开 Deposited

可下载的内容

下载PDF文件
https://ir.library.oregonstate.edu/concern/undergraduate_thesis_or_projects/m613n300f

Descriptions

Attribute NameValues
Creator
Abstract
  • Separation and isolation of organic analytes from environmental matrices such as soils, water, plant, or animal tissue has traditionally involved the use of liquid solvent extractions. Solvent-based extraction methods are often time-consuming, difficult to automate, and use expensive solvents that generate hazardous waste and working conditions. The need for a rapid, reproducible, inexpensive, environmentally-friendly, and non-destructive technique for sample monitoring and quantitation have promoted the development of newer extraction techniques. Conventional techniques for headspace analysis such as purge and trap have been developed to limit solvent use and increase automation, however this method still requires some use of solvents and sample manipulation. Solid-phase microextraction (SPME) is a rapid, relatively inexpensive, and solvent-frce extraction technique. The apparatus consists of a fused silica fiber, coated with a highly absorbent organic phase, attached to a microsyringe for handling convenience (Figure 1). The extraction procedure involves the exposure of the fiber directly into an aqueous sample or to a sample's headspace. Upon equilibrium between the fiber coating and the sample, the fiber is introduced to the heated inlet of the GC, where the analytes are completely desorbed from the fiber coating'.
Resource Type
Date Available
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Non-Academic Affiliation
权利声明
Publisher
Peer Reviewed
Language
File Format
File Extent
  • 385109 bytes
Digitization Specifications
  • Master files scanned at 600 ppi (256 Grayscale) using Capture Perfect 3.0 on a Canon DR-9080C in TIF format. PDF derivative scanned at 300 ppi (256 B+W), using Capture Perfect 3.0, on a Canon DR-9080C. CVista PdfCompressor 3.1 was used for pdf compression and textual OCR.
Replaces

关联

Parents:
属于 Collection:

单件

缩略图 标题 上传日期 公开度 行动
file details Heider_Ch.pdf 2017-10-26 公开 下载