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NIST SRM 2710A / 2711A

Definition

Montana Soil certified reference materials (CRMs) with certified concentrations of Pb, Sb, Ba, and many other elements. Used to calibrate and quality-control ICP-MS methods for GSR hand-swab analysis, providing traceability to national metrology standards.

Related terms

Diazol / SINOXIDE
A diazonium salt-based organic initiating compound used in Sintox and related lead-free primer formulations, replacing lead styphnate. Does not contribute Pb, Sb,...
ENFSI EWG-GSR Best Practice Manual
Published in 2016 by the European Network of Forensic Science Institutes Expert Working Group on Gunshot Residue. The primary guidance document for...
ICP-MS (Inductively Coupled Plasma Mass Spectrometry)
A bulk elemental quantification technique that dissolves the entire hand swab or SEM stub and measures total element mass per sample. Complements...
KED (Kinetic Energy Discrimination)
An ICP-MS collision-reaction cell mode using helium gas to reduce polyatomic interferences on analyte masses. Used in GSR ICP-MS analysis to improve...
Non-Toxic Ammunition (NTA)
A broad product category encompassing any small-arms ammunition with lead-free primers and, often, lead-free projectile materials. Includes lines from Federal Premium, CCI,...
SINTOX
A lead-free, heavy-metal-free primer formulation developed by DAG (Deutsche Ammunitions- und Geschossfabrik) and Geco in Germany in the 1990s-2000s, replacing lead styphnate...
Strontium Peroxide (SrO2)
An initiating compound used in some lead-free primer formulations, particularly in Norma Sintox cartridges. Contributes Sr to the GSR particle signature. Sr...
Zinc Peroxide (ZnO2)
A fuel/oxidiser compound used in some lead-free primer formulations in place of antimony sulphide. Contributes Zn to the GSR particle signature; Zn...

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