Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2023 Apr 11;13:5876. doi: 10.1038/s41598-023-32557-w

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2023

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

SEM-EDS analysis of Baltic 83. (A) SE image of exposed beetle in Baltic 83B after the removal of flakes for FTIR analysis. (B) Section of exposed sternite cuticle with marked location for EDS probing. (C) Section of nearby amber with EDS probing location. (D) EDS spectral comparison of the sternite cuticle (blue) and Baltic amber (red), with inset of a magnification of the low eV region. Gold M peaks between 1500 and 2500 eV are due to the coating process and are not native to the sample. The amber only contains carbon and oxygen, while the cuticle also contains trace amounts of nitrogen and calcium.