Elemental and Inorganic Analysis

M ngure 10.12 Rubeanic acid and its reaction with copper. 

Lead-free primers, created in response to environmental concerns, complicate the identification of GSR however, such particulates retain the physical characteristics of condensed metals. Table 10.4 summarizes key analytical findings relating to lead-free primers. Another alternative to lead styphnate as an initiator are mercury compounds, such as mercury fulminate (Table 9.4). Not surprisingly, little mercury residue is found in the GSR, due to the volatility of mercury.  

Assume that a plume of GSR is hot enough to melt all compxiunds and reduce metals to their elemental gaseous state. Predict the layering of a spherical condensate. 

Answsn The dements of interest are Pb, Sb, and Ba, with the following characteristics  

Assuming a uniform temperature gradient, barium will condense first, lead last. 

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