Goldstone S L, Francis S C, Gardner S J
Faculty of Health Sciences and Medicine, Bond University, 14 University Drive, Robina, Gold Coast 4229, Australia.
South East Region Fingerprints, Queensland Police Service, Cnr Fortune & De Barnett St., Coomera, Queensland 4209, Australia.
Forensic Sci Int. 2015 Jul;252:33-8. doi: 10.1016/j.forsciint.2015.04.012. Epub 2015 Apr 20.
Fingerprints are considered one of the best forms of personal identification. While numerous enhancement techniques exist to develop fingerprints under various conditions, the enhancement of fingerprints exposed to sea spray aerosol (SSA) still remains problematic. 1056 fingerprints from four donors, using a depletion series and triplicate repeats, were deposited onto glass panels and exposed to SSA for 1 week and 1 month. Control prints were deposited in the same manner and left under laboratory conditions. All prints were enhanced using fingerprint enhancement techniques available to Forensic Police Officers and subsequently examined for identifiability by a Fingerprint Expert. Significantly fewer identifiable prints (p<0.01) were developed after exposure to SSA for 1 month (11%) compared to exposure for 1 week (69%) (compared to the control prints 99%) for all enhancement techniques. After 1 week's exposure, all techniques enhanced over 50% of prints, except SPR white (12%), with iron (III) oxide and Wetwop™ white producing over 90% identifiable prints. Only iron (III) oxide, Wetwop™ white and SPR black returned any identifiable prints following 1 month's SSA exposure. Iron (III) oxide being significantly better (p<0.01, 67%) than the other techniques. Iron (III) oxide suspension and Wetwop™ white were found to be superior at enhancing prints at both SSA exposure times.
指纹被认为是个人身份识别的最佳形式之一。虽然存在许多增强技术来在各种条件下显影指纹，但暴露于海喷雾气溶胶（SSA）下的指纹增强仍然存在问题。从四名捐赠者处采集了1056枚指纹，采用递减系列和一式三份重复，将其沉积在玻璃板上，并暴露于SSA中1周和1个月。对照指纹以相同方式沉积并置于实验室条件下。所有指纹均使用法医警官可用的指纹增强技术进行增强，随后由一名指纹专家检查其可识别性。与暴露1周（69%）（与对照指纹99%相比）相比，暴露于SSA 1个月后（11%），所有增强技术显影出的可识别指纹显著减少（p<0.01）。暴露1周后，除SPR白色（12%）外，所有技术增强的指纹均超过50%，氧化铁和Wetwop™白色产生的可识别指纹超过90%。在暴露于SSA 1个月后，只有氧化铁、Wetwop™白色和SPR黑色返回了任何可识别的指纹。氧化铁明显优于其他技术（p<0.01，67%）。发现在两个SSA暴露时间下，氧化铁悬浮液和Wetwop™白色在增强指纹方面表现更优。
