TY - JOUR
T1 - Element-specific determination of chlorine in gases by Laser-Induced-Breakdown-Spectroscopy (LIBS)
AU - Haisch, C.
PY - 1996
Y1 - 1996
N2 - An experimental set-up for the detection of elemental chlorine in chlorinated hydrocarbons (CHCs) is described based on a miniaturized system, which could be used for on-line monitoring of chlorinated compounds. With an optimized time-resolved detection chlorine from CHCs like CCl4 can be determined by Laser-Induced-Breakdown-Spectroscopy (LIBS) with μg/g-detection limits in the gas phase. The application of a miniaturized Nd: YAG laser resulted only in a minor loss in performance, hence it could be used for designing a rugged and small on-line sensor. In addition, preliminary results for the detection of chlorine via the formation of CuCl in the plasma formed by focussing the laser on a copper surface are reported. Utilizing the luminescence of the CuCl D-system at 440 nm, a tenfold improvement in the detection limits was obtained. It appears that the formation of "ad hoc" selected, small molecules in a laser plasma could be a promising alternative for the selective and sensitive analysis of gaseous chlorinated and other species.
AB - An experimental set-up for the detection of elemental chlorine in chlorinated hydrocarbons (CHCs) is described based on a miniaturized system, which could be used for on-line monitoring of chlorinated compounds. With an optimized time-resolved detection chlorine from CHCs like CCl4 can be determined by Laser-Induced-Breakdown-Spectroscopy (LIBS) with μg/g-detection limits in the gas phase. The application of a miniaturized Nd: YAG laser resulted only in a minor loss in performance, hence it could be used for designing a rugged and small on-line sensor. In addition, preliminary results for the detection of chlorine via the formation of CuCl in the plasma formed by focussing the laser on a copper surface are reported. Utilizing the luminescence of the CuCl D-system at 440 nm, a tenfold improvement in the detection limits was obtained. It appears that the formation of "ad hoc" selected, small molecules in a laser plasma could be a promising alternative for the selective and sensitive analysis of gaseous chlorinated and other species.
UR - http://www.scopus.com/inward/record.url?scp=0030360335&partnerID=8YFLogxK
U2 - 10.1007/s0021663560021
DO - 10.1007/s0021663560021
M3 - Article
AN - SCOPUS:0030360335
SN - 0937-0633
VL - 356
SP - 21
EP - 26
JO - Fresenius' Journal of Analytical Chemistry
JF - Fresenius' Journal of Analytical Chemistry
IS - 1
ER -