title: A gas-diffusion flow injection method coupled with online solid-liquid extraction for the determination of ammonium in solid samples
metadata.name: dc.contributor.author
metadata.value: Timofeeva, Irina I
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Bulatov, Andrey V
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Moskvin, Aleksey L
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kolev, Spas D
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2016-04-13T09:31:51Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2016-04-13T09:31:51Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2015-09-01
metadata.lang: -
metadata.name: dc.identifier
metadata.value: 10.1016/j.talanta.2015.04.051
metadata.lang: -
metadata.name: dc.identifier.issn
metadata.value: 10.1016/j.talanta.2015.04.051
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/2083
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: A simple, rapid and reliable gas-diffusion flow injection (GD-FI) method for ammonium determination in building materials has been developed. It is based on leaching ammonium from a ground solid sample into an alkaline solution with subsequent ammonia gas generation. Ammonia is then transported in a nitrogen stream to the GD cell of the FI system where it is absorbed into its acceptor solution containing a mixture of the acid-base indicators cresol red and thymol blue. The maximum increase in the absorbance of the acceptor solution at 580 nm is related to the ammonium concentration in the solid sample. The proposed method is characterized by a linear concentration range of 0.1-5.0 mg NH4(+) kg(-1), a limit of detection of 8 μg NH4(+) kg(-1) and a sample throughput of 10h(-1). A successful application of this method for the determination of ammonium in building materials such as concrete, cement and sand is reported.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: Australian Government Endeavor Award (Australia)
  Center for Chemical Analysis and Materials Research of St.
  Petersburg State University (Russia)
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: Elsevier
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Talanta;Vol. 142
metadata.lang: -
metadata.name: dc.subject
metadata.value: Flow injectionan alysis
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Gas-diffusion
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Solid–liquidextraction
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Leaching
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Ammonium
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Ammonia
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Building materials
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: A gas-diffusion flow injection method coupled with online solid-liquid extraction for the determination of ammonium in solid samples
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: Talanta 2015_V142.docx
resources.url: https://dspace.spbu.ru/bitstream/11701/2083/1/Talanta%202015_V142.docx
resources.format: Microsoft Word XML
resources.size: 17,72 kB