High sensitive and selective ethylene measurement by using a large-capacity-on-chip preconcentrator device

Janssen, S.; Tessmann, Tobias; Lang, Walter

doi:10.1016/j.snb.2014.02.001

Cited by 40 publications

(29 citation statements)

References 4 publications

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“…The push-in connectors provide voltage to the heater, and the solenoid valves pass or bypass the preconcentrator in the gas chromatographic system. The simulation that provides the heating profile and the fabrication steps are presented elsewhere [ 5 ].…”

Section: Preconcentratormentioning

confidence: 99%

“…Measuring carbon dioxide, humidity, and temperature is relatively straightforward, and commercially sensors are available to detect them. However, to develop a system that detects ethylene gas in ppb showing no cross-sensitivity toward carbon dioxide is still a challenge [ 3 , 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…Parts per billion (ppb) by volume concentration was detected by adding the preconcentrator in the gas chromatographic system. The addition of preconcentrator results in a large humidity signal [ 5 ]. The use of a suitable stationary phase results in a separation of humidity from ethylene gas presented in an earlier work [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Gas Chromatographic System for the Detection of Ethylene Gas Using Ambient Air as a Carrier Gas

Zaidi

Tahir

Vellekoop

et al. 2017

Sensors

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Ethylene gas is a naturally occurring gas that has an influence on the shelf life of fruit during their transportation in cargo ships. An unintentional exposure of ethylene gas during transportation results in a loss of fruit. A gas chromatographic system is presented here for the detection of ethylene gas. The gas chromatographic system was assembled using a preconcentrator, a printed 3D printed gas chromatographic column, a humidity sensor, solenoid valves, and an electrochemical ethylene gas sensor. Ambient air was used as a carrier gas in the gas chromatographic system. The flow rate was fixed to 10 sccm. It was generated through a mini-pump connected in series with a mass flow controller. The metal oxide gas sensor is discussed with its limitation in ambient air. The results show the chromatogram obtained from metal oxide gas sensor has low stability, drifts, and has uncertain peaks, while the chromatogram from the electrochemical sensor is stable and precise. Furthermore, ethylene gas measurements at higher ppb concentration and at lower ppb concentration were demonstrated with the electrochemical ethylene gas sensor. The system separates ethylene gas and humidity. The chromatograms obtained from the system are stable, and the results are 1.2% repeatable in five similar measurements. The statistical calculation of the gas chromatographic system shows that a concentration of 2.3 ppb of ethylene gas can be detected through this system.

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Section: Preconcentratormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Gas Chromatographic System for the Detection of Ethylene Gas Using Ambient Air as a Carrier Gas

Zaidi

Tahir

Vellekoop

et al. 2017

Sensors

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“…One of the latest developments on this subject was made by the Institute of Microsensor and Actuator Systems (IMSAS) [33][34][35] (figure 8). A mobile system was developed which is small, robust and sufficiently sensitive for use inside a container during transport.…”

Section: (D) Gas Chromatographymentioning

confidence: 99%

Ethylene detection in fruit supply chains

Janssen

Schmitt

Blanke

et al. 2014

Phil. Trans. R. Soc. A.

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Ethylene is a gaseous ripening phytohormone of fruits and plants. Presently, ethylene is primarily measured with stationary equipment in laboratories. Applying in situ measurement at the point of natural ethylene generation has been hampered by the lack of portable units designed to detect ethylene at necessary resolutions of a few parts per billion. Moreover, high humidity inside controlled atmosphere stores or containers complicates the realization of gas sensing systems that are sufficiently sensitive, reliable, robust and cost efficient. In particular, three measurement principles have shown promising potential for fruit supply chains and were used to develop independent mobile devices: non-dispersive infrared spectroscopy, miniaturized gas chromatography and electrochemical measurement. In this paper, the measurement systems for ethylene are compared with regard to the needs in fruit logistics; i.e. sensitivity, selectivity, long-term stability, facilitation of automated measurement and suitability for mobile application. Resolutions of 20–10 ppb can be achieved in mobile applications with state-of-the-art equipment, operating with the three methods described in the following. The prices of these systems are in a range below €10 000.

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“…The container only communicates warning messages if a critical state is detected. The sensor system of the intelligent container comprises a set of wireless temperature and humidity sensors to detect local maximal / hot spots and gas sensors for CO2 and ethylene (Janssen, 2014), wherein the latter one is currently only available at lab-scale. Field tests were carried out for road transport of meat in North-Europe and for containerized transport of bananas from Central America to Europe.…”

Section: Introductionmentioning

confidence: 99%

The Intelligent Container for Banana Transport Supervision and Ripening

Jedermann¹,

Praeger²,

Geyer³

et al. 2015

Acta Hortic.

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Bananas differ from other fruits by the fact that a special ethylene treatment is applied in the destination country to turn 'green' into ripe bananas. Moderate differences in bunch age at harvest, transport duration and temperature have no measurable effect on the fruit quality after ripening as long as the bananas are maintained in a mature green state with no signs of unwanted self-induced ripening (turners) before ethylene treatment. Therefore, systems for automated transport supervision should focus on the detection of turners by higher respiration activity and gas production as well as by the detection of potential hot spots caused by high respiration heat in combination with insufficient air flow through the affected pallet. Under optimal cooling conditions, the subsequent ripening process can be carried out directly in the container. This paper will focus on three topics related to meeting this challenge. Firstly, the technical system of the intelligent container for remote online supervision of transports, which has been tested during three transports of bananas from Costa Rica to Europe, but can also be used for different types of perishable products. Second, a simple heat transfer model is introduced which allows estimating index values for local cooling effects and respiration activity per pallet from the measured temperature curves. The model can thereby predict the risk of hot spots. Finally, we present the first test results for container ripening of bananas. The major obstacle therein is the large amount of heat generated during the process, which is about 5 times higher than during the transportation of green bananas. We applied different modifications in the packing scheme to improve the air flow, which showed clear benefits with regard to the amount of heat removed by cooling.

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High sensitive and selective ethylene measurement by using a large-capacity-on-chip preconcentrator device

Cited by 40 publications

References 4 publications

A Gas Chromatographic System for the Detection of Ethylene Gas Using Ambient Air as a Carrier Gas

A Gas Chromatographic System for the Detection of Ethylene Gas Using Ambient Air as a Carrier Gas

Ethylene detection in fruit supply chains

The Intelligent Container for Banana Transport Supervision and Ripening

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