Quenching-Chemiluminescence Determination of Trace Amounts of l-Tyrosine Contained in Dietary Supplement by Chemiluminescence Reaction of an Iron-Phthalocyanine Complex

Table 1

Determination for isomer of tyrosine.

Substance	Detection limit (M)	RSD (𝑛=5)
L-tyrosine	1.81 × 10^−7 M	1.63%
D-tyrosine	9.69 × 10^−8 M	1.99%