New nanostructure of polydimethylsiloxane coating as a solid-phase microextraction fiber: Application to analysis of BTEX in aquatic environmental samples

Zali, Sara; Jalali, Fahimeh; Es-haghi, Ali; Shamsipur, Mojtaba

doi:10.1016/j.jchromb.2016.08.045

Cited by 13 publications

(1 citation statement)

References 26 publications

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“…Other methods and technologies were previously used for this purpose. The most common method for the detection of these VOCs is gas chromatography/mass spectrometry [24][25][26][27]. These systems are of high precision and selectivity.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Wireless Sensor Network for Air Quality Measurements

2018

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This study addresses the development of a wireless gas sensor network with low cost, small size, and low consumption nodes for environmental applications and air quality detection. Throughout the article, the evolution of the design and development of the system is presented, describing four designed prototypes. The final proposed prototype node has the capacity to connect up to four metal oxide (MOX) gas sensors, and has high autonomy thanks to the use of solar panels, as well as having an indirect sampling system and a small size. ZigBee protocol is used to transmit data wirelessly to a self-developed data cloud. The discrimination capacity of the device was checked with the volatile organic compounds benzene, toluene, ethylbenzene, and xylene (BTEX). An improvement of the system was achieved to obtain optimal success rates in the classification stage with the final prototype. Data processing was carried out using techniques of pattern recognition and artificial intelligence, such as radial basis networks and principal component analysis (PCA).

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Section: Introductionmentioning

confidence: 99%