FIG. 3.
Viking LR gas release (VL2C3 
) compared to 13CO2 (g) released from aqueous 13C-alanine after addition to gamma-irradiated Ca(ClO4)2 (×). No 13CO2 release was observed from samples heated to 160°C. Also shown is the decomposition of chloroamino acids [initial concentrations 4.0×10−4
M (▴) and 2.0×10−4
M (•)] formed after the addition of Ca(ClO)2 to a 5.0×10−4
M alanine and 2.5×10−4
M glycine solution. The chloroamino acid decomposition rate compared to the 13CO2 release rate suggests that chloroalanine is the primary chlorination product.