SOIL MOISTURE IMPACT ON AMMONIA SOIL FLUXES WITH INPUT OF MINERAL NITROGEN

Frolova, O.; Grinfelde, I.; Berzina, L.; Valujeva, K.; Pilecka, J.
Abstract:
Ammonia as one of the air pollutant mostly originated from agricultural activities, such as manure and soil management. There is a need for precise and reliable quantification of ammonia emissions which is easy applicable on field or laboratory conditions. Cavity ring-down spectroscopy device Picarro G2508 measures ammonia (NH3) concentrations along greenhouse gasses, namely nitrous oxide, methane, carbon dioxide and water vapour content. The aim of the study is to develop methodology for NH3 measurements for Picarro G2508 in laboratory conditions as well as to conclude the peak concentrations of ammonia emission in time resolution of 5 days measurement period. Measurements were done in laboratory with Picarro G2508 in closed chamber system with recirculation by using 3 types of mineral soils and 2 types of organic soils with disturbed structure dried in room temperature and sieved). Two soil moisture conditions were simulated both saturated and oversaturated. Water were added in the beginning of experiment and there were no additional water input during experiment. Urea and ammonia nitrate were used as nitrogen fertilizers and added to sample right before the first measurement was carried out. The time of measurement have to be established before each experiment according to expected ammonia emission intensity and water vapour. During the second and third measurement day NH3 concentrations were the highest in mineral soil samples with addition of urea mineral fertilizer.
SGEM Research areas:
Year:
2018
Type of Publication:
In Proceedings
Keywords:
ammonia; urea; ammonia nitrate; soil flux; ring-down spectrophotometer
Volume:
18
SGEM Book title:
18th International Multidisciplinary Scientific GeoConference SGEM 2018
Book number:
4.2
SGEM Series:
International Multidisciplinary Scientific GeoConference-SGEM
Pages:
607-614
Publisher address:
51 Alexander Malinov blvd, Sofia, 1712, Bulgaria
SGEM supporters:
Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
Period:
02-08 July, 2018
ISBN:
978-619-7408-45-4
ISSN:
1314-2704
Conference:
18th International Multidisciplinary Scientific GeoConference SGEM 2018, 02-08 July, 2018
DOI:
10.5593/sgem2018/4.2/S19.078
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