TY - JOUR
T1 - Photoionization fast-conductivity technique for analysis of traffic contaminated soils
AU - Gridin, Vladimir V.
AU - Bulatov, Valery
AU - Korol, Alona
AU - Schechter, Israel
N1 - Funding Information:
This research was supported, in part, by the James-Franck Program for Laser Matter Interaction. W G and VI3 are grateful for partial financial support provided by the Ministry of Absorbtion to the scientists regarded as return citizens andor new immigrants.
PY - 1997
Y1 - 1997
N2 - A time-resolved detection of the multiphoton ionization induced photocurrents was developed and applied to map a near-field contamination profile of a year-around-active traffic road. Main advantages of the proposed method are in its simplicity and rapidity. No chemical sample preparation is required: analysis is carried out in ambient conditions and the technique can be easily automated. A fast screening of contaminated soils is feasible. The soil samples collected at various radial distances, R, have produced, as method's readout, the photoionization charges, Q. These originate from combustion by-products and were found to decrease according to 1/Q ∼ R. This finding is supported by a straightforward contamination model that largely avoids an obvious complexity associated with the precise mathematical treatment of such a pollution source. We estimate that at R=50 m the concentration of organic contamination is as high as 0.1μg/g.
AB - A time-resolved detection of the multiphoton ionization induced photocurrents was developed and applied to map a near-field contamination profile of a year-around-active traffic road. Main advantages of the proposed method are in its simplicity and rapidity. No chemical sample preparation is required: analysis is carried out in ambient conditions and the technique can be easily automated. A fast screening of contaminated soils is feasible. The soil samples collected at various radial distances, R, have produced, as method's readout, the photoionization charges, Q. These originate from combustion by-products and were found to decrease according to 1/Q ∼ R. This finding is supported by a straightforward contamination model that largely avoids an obvious complexity associated with the precise mathematical treatment of such a pollution source. We estimate that at R=50 m the concentration of organic contamination is as high as 0.1μg/g.
UR - http://www.scopus.com/inward/record.url?scp=0031270507&partnerID=8YFLogxK
U2 - 10.1080/10739149709351475
DO - 10.1080/10739149709351475
M3 - 文章
AN - SCOPUS:0031270507
SN - 1073-9149
VL - 25
SP - 321
EP - 333
JO - Instrumentation Science and Technology
JF - Instrumentation Science and Technology
IS - 4
ER -