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Rapid analysis of aldehydes by simultaneous microextraction and derivatization followed by GC-MS

✍ Scribed by Qing Ye; Dagui Zheng; Linhai Liu; Liming Hong

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
126 KB
Volume
34
Category
Article
ISSN
1615-9306

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✦ Synopsis

Abstract

Ultrasound‐assisted dispersive liquid–liquid microextraction (UDLLME) and simultaneous derivatization followed by GC‐MS was developed for the analysis of four aldehydes including acetaldehyde (ACE), propionaldehyde (PRO), butyraldehyde (BUT) and valeraldehyde (VAL) in water samples. In the proposed method, the aldehydes were derivatized with O‐2,3,4,5,6‐(pentafluorobenzyl)hydroxylamine (PFBHA) and extracted by UDLLME in aqueous solution simultaneously; finally, the derivatives were analyzed by GC‐MS. The experimental parameters were investigated and the method validations were studied. The optimal conditions were: aqueous sample of 5 mL, PFBHA of 50 μL, 1.0 mL ethanol (disperser solvent) containing 20 μL chlorobenzene (extraction solvent), ultrasound time of 2 min and centrifuging time of 3 min at 6000 rpm. The proposed method provided satisfactory precision (RSD 1.8–10.2%), wide linear range (0.8–160 μg/L), good linearity (R^2^ 0.9983–0.9993), good relative recovery (85–105%) and low limit of detection (0.16–0.23 μg/L). The proposed method was successfully applied for the analysis of aldehydes in water samples. The experimental results showed that the proposed method was a very simple, rapid, low‐cost, sensitive and efficient analytical method for the determination of trace amount of aldehydes in water samples.

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