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Table 1 Measured result (μg/g dry weight ± SD) of the Certified Reference Material (CRM) for fish with its certified value for Zn, Cu, Cd, Ni and Pb

From: Seasonal variation of heavy metals and metallothionein contents in Asian swamp eels, Monopterus albus (Zuiew, 1793) from Tumpat, Kelantan, Malaysia

Metal

Zna

Cua

Cdb

Nib

Pbb

Measured

46.744 ± 4.74

16.922 ± 2.02

2.676 ± 0.33

32.867 ± 5.46

171.57 ± 15.48

Certified (CRM)

51.3 ± 3.1

15.5 ± 0.63

2.11 ± 0.15

39.5 ± 2.3

183 ± 8

Recovery

91.12%

109.17%

126.82%

83.21%

93.75%

  1. Remark: a: Certified Reference Material (DORM-3), b: Certified Reference Material (PACS-2); SD Standard deviation