TY  - JOUR
T1  - CO<sub>2</sub> Laser Photoacoustic for Measuring NH<sub>3</sub> Gas Concentration on Exhaled Breath of Scavengers on Landfill
AU - Oktafiani, Fitri AU - Stiyabudi, Rizky AU - Hendra Gunawan, Wahyu AU - , Mitrayana 
JO  - Journal of Engineering and Applied Sciences
VL  - 12
IS  - 14
SP  - 3687
EP  - 3691
PY  - 2017
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2017.3687.3691
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2017.3687.3691
KW  - Spectro meter
KW  -scavengers
KW  -photoacoustic
KW  -occured
KW  -concentration
AB  - A CO<sub>2</sub> laser photoacoustic spectrometer intracavity configuration has been built and tested. The
application was for determining the NH<sub>3</sub> gas concentration on exhaled breath of scavengers on the Landfill. The 
off-line experiment was conducted through non-invasive sample method using exhaled breath. Exhaled breath
sample was taken by three daily variations of the morning, mid-day and post-day. The data was analized by
multicompound gas method using the software of excel, origin and scilab. The result from the photoacoustic
spectrometer intracavity configuration with the strongest frequency resonance(1650&plusmn;5) Hz at biomarker gas
occured on absorption lines 10R14, 10P14 and 10P16. The lowest detection boundary from ammonia is
(23.3&plusmn;0.5) ppbV. The highest ammonia concentration from scavengers was (2904&plusmn;1) ppbV occured in the early
morning and the lowest concentration was (1089&plusmn;1) ppbV in the post-day. Meanwhile, on healthy volunteers,
the highest ammonia concentration was (1676&plusmn;1) ppbV in the morning and the lowest ammonia concentration
was 377&plusmn;1) ppbV in the mid-day. It shows the contamination of air ambien caused the increasing concentration
of biomarker gas in the human body.
ER  -