“…The sensors of metallic contaminants in water and their performance have been reported for the case of iron (Pons et al, 2005), arsenic (Toda & Ohba, 2005), chromium (Tao & Sarma, 2006) and other metals (Masàr et al 2009). New organic contamination detection methods and instruments have been widely reported in recent literature (Lucklum et al, 1996); (Bürck et al, 1998); (Rössler et al, 1998); (Yang et al, 1999); (Scharring, 2002); (Yang & Chen, 2002); (Yang & Lee, 2002); (De Melas et al,2003); (Fernàndez-Sànchez et al, 2004); (Kamikawachi et al, 2004); (Sluszny et al, 2004); (Falate et al, 2005); (Pons et al, 2005); (Mauriz et al, 2006); (Rodriguez et al, 2006); (Tao & Sarma, 2006); (Jeon et al, 2009). Optical sensors for bacteria detection and quantification in water have been reported (Ji et al, 2004); (Zourob et al, 2005); (Nakamura et al 2008).…”