Institute of Environmental Science and Research, Mt Albert Science Centre, Hampstead Road, Auckland, New Zealand.
Forensic Sci Int. 2009 Nov 20;192(1-3):72-7. doi: 10.1016/j.forsciint.2009.07.021. Epub 2009 Sep 2.
In this research a chemical marker powder, based on Lycopodium clavatum spores, was studied to determine its transfer and persistence on a T-shirt. Such chemical marker powders are used to provide evidence that a person has handled a covertly marked object, such as a drug package. The powder was found to transfer readily between a marked item and the person handling it. The powder was found to persist on a T-shirt for up to 13h; however, there was only a very small amount of powder remaining at this time. The rate of loss of the L. clavatum spores was found to follow a decay curve. The largest decrease in spores from the T-shirt was seen in the first 2h after the marked item had been handled.
在这项研究中，研究了一种基于石松孢子的化学标记粉末，以确定其在 T 恤上的转移和持久性。这种化学标记粉末用于提供证据证明一个人已经处理了一个秘密标记的物体，如一个毒品包裹。研究发现，粉末很容易在标记物品和处理它的人之间转移。研究发现，粉末在 T 恤上的持续时间最长可达 13 小时；然而，此时只有很少的粉末残留。石松孢子的损失率被发现遵循衰减曲线。在标记物品被处理后的头 2 小时内，从 T 恤上脱落的孢子数量最多。
