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Sensors 2014, 14(10), 18286-18301;

Monoterpenes Released from Fruit, Plant, and Vegetable Systems

Atmospheric Environment Laboratory, Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seoul 133-791, Korea
Author to whom correspondence should be addressed.
Received: 8 August 2014 / Revised: 16 September 2014 / Accepted: 16 September 2014 / Published: 29 September 2014
(This article belongs to the Special Issue Modern Technologies for Sensing Pollution in Air, Water, and Soil)
PDF [1538 KB, uploaded 9 October 2014]


To quantify the emission rate of monoterpenes (MTs) from diverse natural sources, the sorbent tube (ST)-thermal desorption (TD) method was employed to conduct the collection and subsequent detection of MTs by gas chromatography. The calibration of MTs, when made by both mass spectrometric (MS) and flame ionization detector (FID), consistently exhibited high coefficient of determination values (R2 > 0.99). This approach was employed to measure their emission rate from different fruit/plant/vegetable (F/P/V) samples with the aid of an impinger-based dynamic headspace sampling system. The results obtained from 10 samples (consisting of carrot, pine needle (P. sylvestris), tangerine, tangerine peel, strawberry, sepals of strawberry, plum, apple, apple peel, and orange juice) marked α-pinene, β-pinene, myrcene, α-terpinene, R-limonene, γ-terpinene, and p-cymene as the most common MTs. R-limonene was the major species emitted from citrus fruits and beverages with its abundance exceeding 90%. In contrast, α-pinene was the most abundant MT (37%) for carrot, while it was myrcene (31%) for pine needle. The overall results for F/P/V samples confirmed α-pinene, β-pinene, myrcene, α-terpinene, and γ-terpinene as common MTs. Nonetheless, the types and magnitude of MTs released from fruits were distinguished from those of vegetables and plants. View Full-Text
Keywords: monoterpene; thermal desorption; impinger; 3-bed sorbent tube; emission monoterpene; thermal desorption; impinger; 3-bed sorbent tube; emission
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Iqbal, M.A.; Kim, K.-H.; Ahn, J.H. Monoterpenes Released from Fruit, Plant, and Vegetable Systems. Sensors 2014, 14, 18286-18301.

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