Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1218, Issue 30, Pages 4834-4839Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2011.05.093
Keywords
In-tube solid-phase microextraction (IT-SPME); Capillary liquid chromatography; Carbonyl compounds; Particulate matter PM10
Funding
- Spanish Ministerio de Educacion y Ciencia [CTQ2008-01329/BQU]
- Xunta de Galicia, Spain [09MDS011164PR]
Ask authors/readers for more resources
A new device for carbonyl compounds based on coupling on-line and miniaturizing both, sample pretreatment and chromatographic separation, is reported. Two capillary columns, a GC capillary column (95% methyl-5% phenyl substituted backbone, 70 cm x 0.32 mm i.d., 3 mu m film thickness) in the injection valve for in-tube solid-phase microextraction (IT-SPME) and a Zorbax SB C18 (150 mm x 0.5 mm i.d., 5 mu m particle diameter) LC capillary column were employed. Different combinations of IT-SPME and derivatization using 2,4-dinitrophenylhydrazine (DNPH) were examined for mixtures containing 15 carbonyl compounds (aliphatic, aromatic and unsaturated aldehydes and ketones). A screening analysis of aqueous extracts of atmospheric particulate PM10 was carried out. Moreover, the possibility of coupling IT-SPME and conventional liquid chromatography is also tested. Derivatization solution and IT-SPME coupled to capillary liquid chromatography provided the best results for achieving the highest sensitivity for carbonyl compounds in atmospheric particulate analysis. Detection limits (LODs) using a photodiode array detector (DAD) were ranged from 30 to 198 ng L-1, improving markedly those LODs reported by conventional SPME-LC-DAD. (C) 2011 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available