Essential water quality parameters involve not only
dissolved oxygen, temperature, pH, ammonia, nitrate, nitrite
but also salinity which are listed in Table 1 [2]. These critical
parameters need to be monitored daily and sometimes three
times per day. The main problem is they are performed
manually and it is time consuming process. Currently, the
water sample was measured once for every two weeks. With
the advancement of wireless technology, the sampling protocol
can be made simpler and the system can provides rapid
analysis. Instead of measuring single parameter at one time, it
also can measure several parameters at once.
On that account, the concepts of electronic noses and
tongues has been developed for predictive water quality
monitoring and classification. By coupled them with wireless
sensor network, it can provide a real time data collecting in a
simple, reliable and cost effective way.