Table 3. Amino Acid Content in a Mg²⁺ Brine Sample Retrieved from the South Bay Salt Works (SBSW) via Standard Addition^a.

Leucine	Methionine	Proline	Serine	Glycine	Aspartic Acid
0.5 ± 0.3 μM	NQb	0.7 ± 0.2 μM	1.4 ± 0.4 μM	2.4 ± 0.3 μM	1.5 ± 0.4 μM

^aError was calculated from the standard deviation of triplicate analyses.

^bNot detected at quantifiable amounts.