Abstract

A method is described that quantitatively evaluates development conditions and reactivity of amino acid visualization reagents. Ninhydrin was the primary reagent used in this study. The method consists of spotting a serial dilution of amino acids in a numbered grid on paper. Examples of the variability of development as a result of atmospheric conditions are illustrated.

References

1.
Moenssens
,
A. A.
,
Fingerprint Techniques
,
Chilton
,
Philadelphia
,
1971
, p. 123.
2.
Olsen
,
R. D.
, Sr.
,
Scott's Fingerprint Mechanics
,
Charles C Thomas
,
Springfield, IL
, pp.
286
-
288
.
3.
Olsen
,
R. D.
, Sr.
,
Scott's Fingerprint Mechanics
,
Charles C Thomas
,
Springfield, IL
, pp.
289
-
290
.
4.
Linde
,
H. G.
, “
Latent Fingerprints by a Superior Ninhydrin Method
,”
Journal of Forensic Sciences
 0022-1198, Vol.
20
, No.
3
,
07
1975
, pp.
581
-
584
.
5.
Hamilton
,
P. B.
, “
Amino-Acids on Hands
,”
Nature
 0028-0836, Vol.
205
,
16
01
1965
, pp.
284
-
285
.
6.
Oro
,
J.
and
Skews
,
H. B.
, “
Free Amino-Acids on Human Fingers: The Question of Contamination in Microanalysis
,”
Nature
 0028-0836, Vol.
207
,
04
09
1965
, pp.
1042
-
1045
.
7.
Hadorn
,
B.
, et al
, “
Free Amino-Acids in Human Sweat from Different Parts of the Body
,”
Nature
 0028-0836, Vol.
215
,
22
07
1967
, pp.
416
-
417
.
8.
Knowles
,
A. M.
, “
Aspects of Physiochemical Methods for the Detection of Latent Fingerprints
,”
Journal of Physics E: Scientific Instruments
 0022-3735 https://doi.org/10.1088/0022-3735/11/8/001, Vol.
11
,
1978
, pp.
713
-
721
.
9.
Herod
,
D. W.
and
Menzel
,
E. R.
, “
Laser Detection of Latent Fingerprints: Ninhydrin Followed by Zinc Chloride
,”
Journal of Forensic Sciences
 0022-1198, Vol.
27
, No.
3
,
07
1982
, pp.
513
-
518
.
10.
Haylock
,
S. E.
, “
Technical Hints
,”
Identification News
, Vol.
29
, No.
9
,
09
1979
, p. 10. (Proportions modified, Compare Tighe, D. J., “Freon—Plus Two,” Identification News, Vol. 34, No. 6, June 1984, pp. 3–4.)
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