Table 2. Different concentrations of Cr (VI) solution and its corresponding absorbance of DPC at 540 nm

Chromium (VI) concentration (μg/mL)	Absorbance of DPC
	Isolate FAYP2	Isolate FAYP3
100	0.0251	0.0291
200	0.0413	0.0583
300	0.0765	0.0951
400	0.1375	0.1517
500	0.2021	0.2143

DPC, di-phenyl carbazide.