TY - JOUR
T1 - Rapid quantitative colourimetric tests for trinitrotoluene (TNT) in soil
AU - Choodum, Aree
AU - Kanatharana, Proespichaya
AU - Wongniramaikul, Worawit
AU - NicDaeid, Niamh
PY - 2012/10/10
Y1 - 2012/10/10
N2 - A rapid quantitative colourimetric test was developed for the determination of 2,4,6-Trinitrotoluene (TNT) in soil. Quantification was achieved using an innovative application of photography where the relationship between the Red Green Blue (RGB) value and concentration of colorimetric product was exploited. The wide linear range (1-50. mg/L) and low detection limit (0.73 ± 0.01. mg/L to 3.5 ± 0.4. mg/L) achieved was comparable with spectrophotometric quantification methods. Quantification was validated both with known concentration standards and spiked soil extracts confirming the accuracy of the technique. The results demonstrate a powerful technique with the capacity for development as a rapid on site field test for the analysis of explosives.
AB - A rapid quantitative colourimetric test was developed for the determination of 2,4,6-Trinitrotoluene (TNT) in soil. Quantification was achieved using an innovative application of photography where the relationship between the Red Green Blue (RGB) value and concentration of colorimetric product was exploited. The wide linear range (1-50. mg/L) and low detection limit (0.73 ± 0.01. mg/L to 3.5 ± 0.4. mg/L) achieved was comparable with spectrophotometric quantification methods. Quantification was validated both with known concentration standards and spiked soil extracts confirming the accuracy of the technique. The results demonstrate a powerful technique with the capacity for development as a rapid on site field test for the analysis of explosives.
KW - Digital images
KW - RGB colour system
KW - Nessler's test
KW - 2,4,6-Trinitrotoluene
UR - http://www.scopus.com/inward/record.url?scp=84865636490&partnerID=8YFLogxK
U2 - 10.1016/j.forsciint.2012.07.014
DO - 10.1016/j.forsciint.2012.07.014
M3 - Article
C2 - 22906588
AN - SCOPUS:84865636490
SN - 0379-0738
VL - 222
SP - 340
EP - 345
JO - Forensic Science International
JF - Forensic Science International
IS - 1-3
ER -