Visual artificial tongue for identification of various metal ions in mixtures and real water samples: a colorimetric sensor array using off-the-shelf dyes.
Yuanfang HuangPeiwen ChengChunyan TanPublished in: RSC advances (2019)
A three-unit colorimetric sensor array in aim of detecting heavy metal ions has been constructed with two off-the-shelf dyes. Multivariate data analysis is performed using LDA and HCA to recognize colour change patterns based on both absorption spectra and RGB values from image scans. The sensor array is able to differentiate 15 metal ions not only in separate solutions, but also mixtures of 3, 5, and 7 different metal ions and real water samples.
Keyphrases
- aqueous solution
- data analysis
- quantum dots
- heavy metals
- gold nanoparticles
- high throughput
- high resolution
- sensitive detection
- ionic liquid
- computed tomography
- hydrogen peroxide
- water soluble
- fluorescent probe
- high density
- living cells
- magnetic resonance
- wastewater treatment
- machine learning
- risk assessment
- nitric oxide
- magnetic resonance imaging
- label free
- molecular dynamics