A new method for relative Sr determination in human teeth enamel

被引：14

作者：

Alvira, Fernando C. ^{[1
]}

Rozzi, Fernando V. Ramirez ^{[2
]}

Torchia, Gustavo A. ^{[1
]}

Roso, Luis ^{[3
]}

Bilmes, Gabriel M. ^{[1
,4
]}

机构：

[1] Ctr Invest Opt CONICET La Plata CIC, RA-1900 La Plata, Argentina

[2] CNRS, UPR2147, F-75014 Paris, France

[3] Univ Salamanca, Serv Laser, Salamanca 38008, Spain

[4] Univ Nacl La Plata, La Plata, Argentina

来源：

JOURNAL OF ANTHROPOLOGICAL SCIENCES | 2011年 / 89卷

关键词：

Laser ablation; Strontium; Calcium; Incremental lines; Enamel; STRONTIUM/CALCIUM RATIOS; SR/CA; TOOTH; SR-87/SR-86; DIET; LEAD;

D O I：

10.4436/jass.89012

中图分类号：

Q98 [人类学];

学科分类号：

030303 ;

摘要：

We present a new method to determine Sr/Ca changes in hard dental tissues based on laser ablation and spectroscopic detection. By using femtosecond Laser Induced Breakdown Spectroscopy (fs-LIBS), we micro mapped the relative amount of strontium in the enamel of three human lower third molar. We also analyzed the Sr/Ca ratio along the striae of Retzius. Results show that microlibs allows detection of variation in relative Sr/Ca ratio through enamel. The same values of Sr/Ca ratio were found along a single stria. The method has a precision better than 95% and is sensitive enough to detect Sr/Ca ratio variations among striae and within stria. Fs-LIBS generates information in a fast and simple way that can be used by non-specialists to make inferences about diet or mobility in human populations and fossil hominids.

引用

页码：153 / 160

页数：8

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