Automated procedure for determination of ammonia in concrete with headspace single-drop micro-extraction by stepwise injection spectrophotometric analysis.

@article{Timofeeva2015AutomatedPF,
  title={Automated procedure for determination of ammonia in concrete with headspace single-drop micro-extraction by stepwise injection spectrophotometric analysis.},
  author={Irina Timofeeva and Ilnur Khubaibullin and Mihail Kamencev and Aleksey L. Moskvin and Andrey V Bulatov},
  journal={Talanta},
  year={2015},
  volume={133},
  pages={
          34-7
        }
}
A novel automatic stepwise injection headspace single-drop micro-extraction system is proposed as a versatile approach for automated determination of volatile compounds. The system application is demonstrated for ammonia determination in concrete samples. An ammonia gas was produced from ammonium ions and extracted on-line into 5 μL 0.1M H3PO4 to eliminate the interference effect of concrete species on the ammonia stepwise injection spectrophotometric determination. The linear range was 0.1-1… CONTINUE READING
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