Skip to main content

Table 2 Metal concentration and recovery values for CRM milk samples digested by M-7 method

From: Investigation of heavy metal contents in Cow milk samples from area of Dhaka, Bangladesh

Metal

CRM value (mg/l)

Measured con.(mg/l)

Recovery (%) with M-7a

Minimum detection limit

Cd

1000 mg/l ± 4 mg/l

9.8801±0.002

98.8

0.001 mg/kg

Cr

1000 mg/l ± 4 mg/l

9.8621±0.002

98.6

0.005 mg/kg

Pb

1000 mg/l ± 4 mg/l

9.7805±0.006

97.8

0.002 mg/kg

Fe

1000 mg/l ± 4 mg/l

9.7300±0.017

97.3

0.001 mg/kg

Mn

1005 mg/l

10.1400±0.001

101.4

0.002 mg/kg

Cu

1001 mg/l

9.9320±0.008

99.3

0.001 mg/kg

  1. aM-7: HNO3+ H2O2 (6 ml + 1 ml) for digestion of milk