Determination of ethylene oxide in foodstuffs using headspace gas chromatography mass spectrometry (HS-GC-MS)

Title
Determination of ethylene oxide in foodstuffs using headspace gas chromatography mass spectrometry (HS-GC-MS)
Authors
이수진김해동표희수
Keywords
Ethylene oxide; HS-GC-MS
Issue Date
2014-06
Publisher
한국분석과학회
Abstract
To convert reduced ethylene oxide in foodstuff into 2-chloroethanol the pH of samples was to below pH 2 by adding 2 drops 36 % HCl. This method carried out using headspace gas chromatography mass spectrometry (HS-GC-MS). The established extract condition was added 2 g of NaCl, at 80 ℃ of incubation temperature, for 30 min incubation time and injected 1.5 mL of headspace in sample to GC. The calibration curves were obtained standard solution and showed good linearity with correlation coefficient over 0.99. The range of concentration was 0.022 – 1.10 μg mL-1. The limit of detection (LOD) is 0.022 μg mL-1. The precision and accuracy of the method determined as the repeatability (n = 5) of three concentration levels within a day and between 5 days. Precision is from 4.83 % (high level, at 1100 μgmL-1 in intraday) to 18.0 % (low level, at 0.055 μgmL-1 in intraday). Accuracy is from 91.89 % (low level, at 0.055 μgmL-1 in intraday) to 102.72 % (high level, at 1.10 μgml-1 in intraday. To know repeatability of this method applied samples were analyzed to repeat 3 times.
URI
http://pubs.kist.re.kr/handle/201004/47769
Appears in Collections:
KIST Publication > Conference Paper
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE