Non-destructive determination of nitrogen in malting barleys by instrumental photon activation analysis and its comparison with the Dumas method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F18%3A43914633" target="_blank" >RIV/60461373:22330/18:43914633 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/18:00488727 RIV/67985891:_____/18:00495348

Výsledek na webu

<a href="http://onlinelibrary.wiley.com/doi/10.1002/jib.477/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/jib.477/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/jib.477" target="_blank" >10.1002/jib.477</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Non-destructive determination of nitrogen in malting barleys by instrumental photon activation analysis and its comparison with the Dumas method

Popis výsledku v původním jazyce

Instrumental photon activation analysis (IPAA) was used tomeasure the nitrogen content of malting barleys used in brewing and breeding in the Czech Republic. The study compares the fast and non-destructive IPAA method with the classical Dumasmethod requiring combustion of the sample. The IPAA procedure for nitrogen assay is based on measuring the positron–electron annihilation γ line at 511 keV from the photoactivation product 13N, which is interfered with by other positron emitting nuclides. Interference from15Ocan be eliminated by counting after a sufficient decay time. Interferences from34mCl and 38K can be corrected via measuring their specific γ lines at 146.4 and 2167.7 keV, respectively. The IPAA procedure has been verified by analysis of several biological referencematerials and is suitable for nitrogenmeasurement in cereals and other plantmaterials with a detection limit down to 102 wt%. Nitrogen contents in malting barleys ranged from 1.4 to 2.2 wt% and were dependent on the cereal variety and growth conditions (fertilizer use and chemical protection).

Název v anglickém jazyce

Non-destructive determination of nitrogen in malting barleys by instrumental photon activation analysis and its comparison with the Dumas method

Popis výsledku anglicky

Instrumental photon activation analysis (IPAA) was used tomeasure the nitrogen content of malting barleys used in brewing and breeding in the Czech Republic. The study compares the fast and non-destructive IPAA method with the classical Dumasmethod requiring combustion of the sample. The IPAA procedure for nitrogen assay is based on measuring the positron–electron annihilation γ line at 511 keV from the photoactivation product 13N, which is interfered with by other positron emitting nuclides. Interference from15Ocan be eliminated by counting after a sufficient decay time. Interferences from34mCl and 38K can be corrected via measuring their specific γ lines at 146.4 and 2167.7 keV, respectively. The IPAA procedure has been verified by analysis of several biological referencematerials and is suitable for nitrogenmeasurement in cereals and other plantmaterials with a detection limit down to 102 wt%. Nitrogen contents in malting barleys ranged from 1.4 to 2.2 wt% and were dependent on the cereal variety and growth conditions (fertilizer use and chemical protection).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21101 - Food and beverages

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the Institute of Brewing

ISSN

0046-9750

e-ISSN

—

Svazek periodika

124

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

5

Strana od-do

4-8

Kód UT WoS článku

000425592200001

EID výsledku v databázi Scopus

2-s2.0-85042363744