MilliporeSigma
  • Home
  • Search Results
  • Bioluminescent liquid light guide pad biosensor for indoor air toxicity monitoring.

Bioluminescent liquid light guide pad biosensor for indoor air toxicity monitoring.

Analytical chemistry (2015-03-17)
Evgeni Eltzov, Avital Cohen, Robert S Marks
ABSTRACT

Indoor air pollution became a recent concern found to be oftentimes worse than outdoor air quality. We developed a tool that is cheap and simple and enables continuous monitoring of air toxicity. It is a biosensor with both a nondisposable (monitor) and disposable (calcium alginate pads with immobilized bacteria) elements. Various parameters to enhance its signal have been tested (including the effect of the pad's orientation, it's exposure to either temperature or time with the air toxicant analyte, and various concentrations thereof). Lastly, the sensor has demonstrated its ability to sense the presence of chemicals in a real, indoor environment. This is the first step in the creation of a sensitive and simple operative tool that may be used in different indoor environments.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Pyridine, puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99.5% (GC)
Sigma-Aldrich
Ammonium hydroxide solution, 28% NH3 in H2O, ≥99.99% trace metals basis
Sigma-Aldrich
Pyridine, ReagentPlus®, ≥99%
Sigma-Aldrich
Pyridine, biotech. grade, ≥99.9%
Sigma-Aldrich
Ammonium hydroxide solution, puriss. p.a., reag. ISO, reag. Ph. Eur., ~25% NH3 basis
Sigma-Aldrich
Pyridine, suitable for HPLC, ≥99.9%
Sigma-Aldrich
N,N-Diisopropylethylamine, 99.5%, biotech. grade
Sigma-Aldrich
Ammonium hydroxide solution, puriss., 30-33% NH3 in H2O
Sigma-Aldrich
Ammonium hydroxide solution, puriss., meets analytical specification of Ph. Eur., 25-30% NH3 basis
Sigma-Aldrich
Pyridine, ACS reagent, ≥99.0%
Sigma-Aldrich
Pyridine, ReagentPlus®, ≥99%
Sigma-Aldrich
(±)-Epichlorohydrin, purum, ≥99% (GC)
Supelco
(±)-Epichlorohydrin, analytical standard
Supelco
Triphenyl phosphate solution, certified reference material, 500 μg/mL in methyl tert-butyl ether
Sigma-Aldrich
4-Methylmorpholine, purified by redistillation, ≥99.5%
Sigma-Aldrich
Triphenyl phosphate solution, NMR reference standard, 0.0485 M in acetone-d6 (99.9 atom % D)
Sigma-Aldrich
4-Methylmorpholine, ReagentPlus®, 99%
Supelco
Triphenyl phosphate solution, NMR reference standard, 0.0485 M in chloroform-d (99.8 atom % D), NMR tube size 10 mm × 8 in.
Sigma-Aldrich
N,N-Diisopropylethylamine, ReagentPlus®, ≥99%
Sigma-Aldrich
Ammonium hydroxide solution, BioUltra, ~1 M NH3 in H2O (T)
Sigma-Aldrich
4-Methylmorpholine, BioXtra, suitable for protein sequencing, ≥99.5% (GC)
Sigma-Aldrich
4-Methylmorpholine, purum, ≥98.0% (GC)
Supelco
Pyridine, analytical standard
Sigma-Aldrich
Piperidine solution, suitable for peptide synthesis, 20% in DMF
Supelco
Triphenyl phosphate solution, NMR reference standard, 0.0485 M in acetone-d6 (99.9 atom % D), NMR tube size 5 mm × 8 in.
Sigma-Aldrich
Triphenyl phosphate solution, NMR reference standard, 0.0485 M in acetone-d6 (99.9 atom % D), NMR tube size 10 mm × 8 in.
Sigma-Aldrich
Triphenyl phosphate solution, NMR reference standard, 0.0485 M in acetone-d6 (99.9 atom % D), NMR tube size 3 mm × 8 in.
Sigma-Aldrich
Calcium chloride, anhydrous, BioReagent, suitable for insect cell culture, suitable for plant cell culture, ≥96.0%
Sigma-Aldrich
Calcium chloride solution, BioUltra, for molecular biology, ~1 M in H2O
Sigma-Aldrich
Calcium chloride, AnhydroBeads, −10 mesh, ≥99.99% trace metals basis