自含墨印章印文盖印时间受老化条件的影响

Influence of Aging Condition on Dating of Self-inking Stamp Impression

目的探索利用气相色谱法较精确、定量测定自含墨印章印文盖印时间受人为老化条件的影响。方法分别在恒温烘烤、紫外线照射、纯水浸泡等人为老化条件下,测定自含墨印章印油中所含有的主要相关溶剂成份的含量变化。结果得出了主要溶剂成份在人为老化条件下其含量的变化规律以及人为老化与自然老化的对应关系。结论利用气相色谱法可以对不同保存条件下自含墨印章印文的盖印时间进行测定,为实际相关案件的检验提供了依据。

Objective To explore the influence of aging condition on the determination of the stamping date of self-inking stamp impressions by gas chromatography. Method The amount of volatile solvents in self-inking stamp impressions, respectively aged by constant temperature baking, UV irradiation, and pure water soaking, were measured by gas chromatography. Results The volatility regularity of solvents in the stamp impressions under different artificial aging conditions was obtained, and its relation- ship with natural aging was also explored. Conclusion The stamping date of self-inking stamp impressions, which are stored in different conditions, can be estimated by gas chromatography. The present method Drovides a scientific basis for forensic practice.