These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: A cleaner and simple spectrophotometric micro-fluidic procedure for copper determination using nitroso-R salt as chromogenic agent.
    Author: Kruanetr S, Tengjaroenkul U, Liawruangrath B, Liawruangrath S.
    Journal: Spectrochim Acta A Mol Biomol Spectrosc; 2008 Oct; 70(5):1134-40. PubMed ID: 18065259.
    Abstract:
    A cleaner and simple spectrophotometric method using microflow analysis (muFA) was performed. It consisted of a T-junction with microcoil on a polymethyl methacrylate (PMMA) chip which was fabricated by laser ablation and a molded polydimethylsiloxane (PDMS) as top plate. The fabricated PMMA chip was integrated with light emitting diode (LED) as light source and spectrometer as detector. The proposed device was applied to determining copper in water samples using nitroso-R salt as chromogenic reagent at 495 nm. It was found that the proposed muFA system was with less reagents and samples consumption with tiny waste generation. The relative standard deviation (R.S.D.) was less than 2% (n=11) with the percentage recovery of 98.0+/-1.7% (n=7). The linear range for determination of copper in water samples was over the range of 0.05-3.0 microg mL(-1) with a correlation coefficient (r2) of 0.999. The limit of detection (3sigma) was 47 ng mL(-1) with a sample throughput of 30 h(-1).
    [Abstract] [Full Text] [Related] [New Search]