Rosemarie Chinni, David A. Cremers, and Rosalie Multari, "Analysis of material collected on swipes using laser-induced breakdown spectroscopy," Appl. Opt. 49, C143-C152 (2010)
Laser-induced breakdown spectroscopy (LIBS) was evaluated to determine elements collected on swipes as surface contamination. A series of long laser plasmas formed along the swipe surface (Post-it paper) interrogated the collected contamination. LIBS detection limits, determined for the elements Ag, As, Ba, Be, Cd, Cr, Cu, Hg, Mn, Ni, Pb, Sr, and Zn on swipes ( area), ranged from (Be) to (Pb). The elements were introduced as constituents of synthetic silicate particles serving as a contaminant dust stimulant. The average predicted mass was within 16% of the actual mass on the swipe. The efficiency of collecting particles from surfaces including plastic, Formica, and Al metal was also evaluated. The ability to detect and differentiate two amino acids on a swipe from each other and from the swipe using chemometric modeling techniques was also demonstrated.
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Unless otherwise stated, measurements were carried out using the LIBS swipe monitor.
Values from Ref. [11] and refer to micrograms of element on diameter filter.
These measurements were carried out using the LIBS benchtop apparatus. Mercury was analyzed by using spiked clean soil rather than the synthetic silicate samples because of the low concentrations of Hg in the silicate samples.
Table 4
Measurement Accuracy Using Swipes (Synthetic Silicate Particles on Post-it Paper)
Actual Mass Placed on Post-it Paper ()
Predicted Mass (Average of Six Replicate Measurements) ()
% RSD is the % relative standard deviation from the six replicate measurements.
Here % Diff. is the average percent difference between the actual and predicted masses from six replicate measurements.
Measurements were taken using the LIBS swipe monitor.
Measurements were taken using the LIBS benchtop apparatus.
Table 5
Collection Efficiency for Synthetic Silicate Samples Swiped from Surface a
Unless otherwise stated, measurements were carried out using the LIBS swipe monitor.
Values from Ref. [11] and refer to micrograms of element on diameter filter.
These measurements were carried out using the LIBS benchtop apparatus. Mercury was analyzed by using spiked clean soil rather than the synthetic silicate samples because of the low concentrations of Hg in the silicate samples.
Table 4
Measurement Accuracy Using Swipes (Synthetic Silicate Particles on Post-it Paper)
Actual Mass Placed on Post-it Paper ()
Predicted Mass (Average of Six Replicate Measurements) ()
% RSD is the % relative standard deviation from the six replicate measurements.
Here % Diff. is the average percent difference between the actual and predicted masses from six replicate measurements.
Measurements were taken using the LIBS swipe monitor.
Measurements were taken using the LIBS benchtop apparatus.
Table 5
Collection Efficiency for Synthetic Silicate Samples Swiped from Surface a