TY - JOUR
T1 - Colorimetric sensor array for qualitative water analysis
AU - Chan, Shu Ann
AU - Lee, Jun Seok
AU - Chang, Young Tae
N1 - Funding Information:
We gratefully acknowledge the National University of Singapore (NUS) for financial support (Young Investigator Award: R-143-000-353-123). J.-S.L. was supported by a Korea Research Foundation Grant funded by the Korean Government (MOEHRD, Basic Research Promotion Fund: KRF-2005-C00088).
PY - 2009
Y1 - 2009
N2 - A chemosensor array comprising 45 off-the-shelf colorimetric dyes, dubbed the Singapore Tongue (SGT), that is capable of discriminating different brands of bottled water and waters of different geographical attribute is described. Twelve kinds of bottled waters were tested by the SGT, and changes of absorbance spectra were analyzed by unsupervised classification methods to validate the SGT system for water analysis. All 12 bottled waters were discriminated at 1 concentration, and SGT could distinguish the identity of samples of the waters diluted up to 100 times, except distilled waters. Following the study of 63 tap waters in different mass rapid transit stations in Singapore, two distinct clusters were observed from a principal component analysis plot, which correspond to the origin of the tap water. The successful discrimination and identification of in this study demonstrates the practical application of the SGT as a simple tool for water analysis.
AB - A chemosensor array comprising 45 off-the-shelf colorimetric dyes, dubbed the Singapore Tongue (SGT), that is capable of discriminating different brands of bottled water and waters of different geographical attribute is described. Twelve kinds of bottled waters were tested by the SGT, and changes of absorbance spectra were analyzed by unsupervised classification methods to validate the SGT system for water analysis. All 12 bottled waters were discriminated at 1 concentration, and SGT could distinguish the identity of samples of the waters diluted up to 100 times, except distilled waters. Following the study of 63 tap waters in different mass rapid transit stations in Singapore, two distinct clusters were observed from a principal component analysis plot, which correspond to the origin of the tap water. The successful discrimination and identification of in this study demonstrates the practical application of the SGT as a simple tool for water analysis.
UR - http://www.scopus.com/inward/record.url?scp=70349333088&partnerID=8YFLogxK
U2 - 10.1071/CH09289
DO - 10.1071/CH09289
M3 - Article
AN - SCOPUS:70349333088
VL - 62
SP - 1040
EP - 1046
JO - Australian Journal of Chemistry
JF - Australian Journal of Chemistry
SN - 0004-9425
IS - 9
ER -