TY - JOUR
T1 - Detection of heavy metals in water using dye nano-complexants and a polymeric film
AU - Hadar, Hodayah Abuhatzira
AU - Bulatov, Valery
AU - Dolgin, Bella
AU - Schechter, Israel
N1 - Funding Information:
This project has been supported by the Israel Council for High Education – the Planning & Budgeting Committee , by Technion Center for Security Science and Technology , by the Grand Water Research Institute and by the James Frank program in laser matter interaction. VB thanks the Ministry of Immigrant Absorption for financial support (KAMEA Program).
PY - 2013/9/15
Y1 - 2013/9/15
N2 - An optical analytical method, based on complexation reactions of organic azo-dyes with heavy metals, is proposed. It is based on a specially designed polymeric film that when submerged in water contaminated with heavy metals it changes its color. The azo-dyes are injected into the tested water, resulting in formation of nano-particles of insoluble complexes. The polymeric film embeds and dissolves these nano-particles and thus allows for spectral and/or visual analysis. This film consists of a PVC polymeric skeleton and an organic solvent, bis(2-ethylhexyl)phthalate, which possesses high affinity to the heavy metal nano-complexes. The method was exemplified for Cd, Ni and Co ions. The method is sensitive in the sub-ppm range. The mechanism and kinetics of the film coloration were reported.
AB - An optical analytical method, based on complexation reactions of organic azo-dyes with heavy metals, is proposed. It is based on a specially designed polymeric film that when submerged in water contaminated with heavy metals it changes its color. The azo-dyes are injected into the tested water, resulting in formation of nano-particles of insoluble complexes. The polymeric film embeds and dissolves these nano-particles and thus allows for spectral and/or visual analysis. This film consists of a PVC polymeric skeleton and an organic solvent, bis(2-ethylhexyl)phthalate, which possesses high affinity to the heavy metal nano-complexes. The method was exemplified for Cd, Ni and Co ions. The method is sensitive in the sub-ppm range. The mechanism and kinetics of the film coloration were reported.
KW - Analysis
KW - Complexation
KW - Heavy metals
KW - Polymeric film
KW - Strip test
UR - http://www.scopus.com/inward/record.url?scp=84880025372&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2013.06.012
DO - 10.1016/j.jhazmat.2013.06.012
M3 - 文章
C2 - 23832057
AN - SCOPUS:84880025372
SN - 0304-3894
VL - 260
SP - 652
EP - 659
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
ER -