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Table 3 Heavy metal data for water reference sample NIST 1643b by ICP-MS (Krishna and Mohan 2014)

From: Assessment of groundwater quality, toxicity and health risk in an industrial area using multivariate statistical methods

Analyte

ICP-MS value (µg/L)

Recommended value (µg/L)

Average (RSD%)

As

50.29

49.0

1.81

Cd

19.89

20.0

0.39

Cr

18.72

18.6

0.45

Cu

21.69

21.9

0.68

Ni

47.87

49.0

1.67

Pb

24.02

23.7

0.94

Zn

66.89

66.0

0.94