Several water samples were collected and analysed
immediately using e-nose and e-tongue. If the analysis cannot
be performed immediately, the water samples should be stored
in a fridge at 4ÛC within one week [4]. The sampling time for
e-nose of each water sample was set within 120 seconds,
sufficient for the sensors to reach a steady state. The interval
data collection was set to 1 second. The flush or purging time
was set to 170 seconds where the sensors are flushed with
clean air filtered by an activated charcoal. The headspace from
water samples were pumped from the samples at flow rate 400
mL/min and directly injected into the sensor chamber [5],[6].
Meanwhile, for e-tongue the sensor array interconnected using
LabVIEW (version 2013) for monitoring through DAQ device
(National Instrument, NI USB-6211). At each measurement,
the e-tongue was rinsed with distilled water.
Several water samples were collected and analysed immediately using e-nose and e-tongue. If the analysis cannot be performed immediately, the water samples should be stored in a fridge at 4ÛC within one week [4]. The sampling time for e-nose of each water sample was set within 120 seconds, sufficient for the sensors to reach a steady state. The interval data collection was set to 1 second. The flush or purging time was set to 170 seconds where the sensors are flushed with clean air filtered by an activated charcoal. The headspace from water samples were pumped from the samples at flow rate 400 mL/min and directly injected into the sensor chamber [5],[6]. Meanwhile, for e-tongue the sensor array interconnected using LabVIEW (version 2013) for monitoring through DAQ device (National Instrument, NI USB-6211). At each measurement, the e-tongue was rinsed with distilled water.
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