NanoSIMS secondary-ion images showing C, N, and S distributions in a TEM section of biofilm

See how NanoSIMS reveals protein-driven aggregation of biogenic zinc sulfide nanoparticles, limiting dispersal in biogeochemical processes.

NanoSIMS Application in Bio-Geochemistry: Extracellular proteins limit the dispersal of biogenic nanoparticles

The Application

Biogeochemistry seeks to understand how microorganisms drive and influence elemental cycles—such as carbon, nitrogen, sulfur, and trace metals—across soils, oceans, sediments, and extreme environments. At this scale, stable isotope labeling combined with high resolution imaging is essential to quantify microbial activity, nutrient uptake, and metabolic interactions within complex natural ecosystems.

The Challenge

Microbial and subcellular biogeochemical processes are hard to study because microbes operate at nanometer scales and produce subtle, localized metabolic signals that require extremely precise isotopic measurements. Environmental samples add heterogeneity and are easily disturbed, making it difficult to extract reliable chemical information. And since most techniques lack the combination of high spatial resolution, multi-isotope detection, and ultrahigh sensitivity, detecting small isotope enrichments and linking them to individual cells remains a significant challenge.

Our Unique Solution

Based on the SIMS technique, CAMECA’s NanoSIMS-HR technology uniquely meets the demands of biogeochemical research by offering:

High-resolution nanoscale imaging, essential for nanoscale maps of isotopic and elemental composition.
Simultaneous detection of up to seven masses, enabling multiple labeled isotopes—such as ¹³C, ¹⁵N, ²H, and ³⁴S— within the same microbial cell or biofilm.
Sub-ppm elemental sensitivity, enabling characterization of subtle metabolic processes, including nutrient incorporation, carbon fixation, and nitrogen cycling.

These capabilities make NanoSIMS-HR the definitive tool for revealing microbial processes that underpin global biogeochemical cycles.

Case Study

In this study, stable isotope labeling combined with NanoSIMS high-resolution imaging enabled researchers to analyze microbial metabolism, extracellular biomineralization, and interactions within mixed microbial communities with unparalleled precision (see Figure).

NanoSIMS images showing the intimate association (yellow and orange areas) of proteins with spheroidal aggregates of biogenic zinc sulfite nanocrystals, an example of extracellular biomineralization

From: Extracellular proteins limit the dispersal of biogenic nanoparticles. J. W. Moreau et al. SCIENCE.

Best-fit product: CAMECA NanoSIMS-HR

The NanoSIMS-HR is the instrument most suited for biogeochemical and environmental microbiology applications due to its unique combination of performance attributes:

Lateral resolution down to 30 nm, essential for imaging at small scale.
Exceptional sensitivity, for both light and heavy elements.
Parallel detection of up to seven masses.

NanoSIMS‑HR stands as the benchmark tool for revealing microbial processes that shape global biogeochemical cycles—a true breakthrough for environmental microbiology and biogeochemistry.

Learn More

Ready to transform your biogeochemical research with nanoscale isotope and elemental imaging?

👉 Contact our experts today to discuss your analytical needs, request a demo, or obtain detailed technical specifications.

👉 Download the NanoSIMS-HR flyer and access our documentation, blogs and webinars to explore performance data and real-world case studies.