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对配方奶的同位素分析揭示了在地理定位奶瓶养婴儿方面的潜在挑战

Lisette M Kootker^1,2, Saskia T M Ammer^3,4, Gareth R Davies^3,4

¹Department of Earth Sciences, Geology & Geochemistry Cluster, Faculty of Science, Vrije Universiteit Amsterdam, de Boelelaan 1085, 1081 HV, Amsterdam, the Netherlands. Lisette.Kootker@vu.nl.

Scientific reports

|February 13, 2024

概括

同位素分析有助于通过饮食追踪其起源来识别未知已故个体. 然而,对于奶粉养的婴儿,奶粉中的同位素成分,而不是当地的水,限制了法医病例中的地理来源确定.

科学领域:

法医科学法医科学法医科学
同位素地球化学同位素地球化学
人类识别人类识别

背景情况:

对人体组织的同位素分析在传统方法失败时,为身份不明的死者提供了关键的来源数据.
饮食摄入影响组织同位素组成,可能表明地理来源.
哺乳奶粉养的婴儿是一个独特的案例,在这种情况下,配方成分,而不是本地饮食,可能会主导同位素特征.

研究的目的:

调查配方奶粉对已故婴儿的 (Sr) 同位素组成的影响.
评估Sr同位素分析在医疗法律背景下确定配方奶粉婴儿的地理来源的潜力.

主要方法:

在人体组织 (婴儿) 中分析 (Sr) 同位素比率.
婴儿Sr同位素数据与潜在来源的比较:配方奶粉和当地自来水.
评估配方奶粉和水对奶瓶养婴儿的总体Sr同位素特征的贡献.

主要成果:

准备好的配方奶粉的Sr同位素组成主要取决于配方奶粉的成分.
准备的牛奶的Sr同位素组成不受当地自来水的显著影响.
这一发现限制了Sr同位素分析用于追踪配方奶粉婴儿的地理来源的实用性.

结论:

在配方奶粉养的婴儿中,Sr同位素分析主要反映了配方奶粉的来源,而不是婴儿的当地环境.
该研究强调了在法医调查中使用同位素来确定瓶婴儿的地理来源的局限性.
可能需要进一步的研究来探索替代的同位素标记或方法来确定这个人口中的来源.

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