Table 4 Application of developed method for the preconcentrations of Co(II) and Hg(II).

From: A Novel Biosorbent for Preconcentrations of Co(II) and Hg(II) in Real Samples

Samples

Co mg kg−1

Hg mg kg−1

NCSZC 73014, certified

220 ± 20a

3.8 ± 0.8a

NCSZC 73014, determined

215 ± 26a

3.8 ± 0.6a

DORM2, certified

182 ± 31a

4.64 ± 0.26

DORM2, determined

179 ± 40a

4.58 ± 0.29

NCS DC78301, certified

16.5

0.22

NCS DC78301, determined

16.3 ± 1.1

±

Tap water

<LOD

<LOD

Tap waterb

0.010 ± 0.001

0.009 ± 0.001

Tigris River water

<LOD

<LOD

Mineral water

<LOD

<LOD

Tuna fish

0.20 ± 0.02

0.026 ± 0.003

Tomato

0.66 ± 0.03

<LOD

Potato

0.65 ± 0.03

0.016 ± 0.001

Macaroni

0.044 ± 0.003

<LOD

Cabbage

0.66 ± 0.01

<LOD

Red lentil

0.14 ± 0.01

<LOD

Green tea

0.17 ± 0.01

<LOD

Black tea

1.6 ± 0.2

<LOD

Mint

0.051 ± 0.004

<LOD

Mintb

0.060 ± 0.003

0.009 ± 0.001

Baby biscuit

0.044 ± 0.002

<LOD

Baby biscuitb

0.053 ± 0.003

0.010 ± 0.001

Baby rice powder

0.069 ± 0.005

<LOD

Coffee

0.058 ± 0.004

<LOD

Gluten free biscuit

0.060 ± 0.005

<LOD

Bovine liver

0.86 ± 0.04

<LOD

Meat

0.083 ± 0.006

<LOD

Beef

0.069 ± 0.004

<LOD

Soil

16.9 ± 1.4

0.65 ± 0.03

  1. ang g−1.
  2. bSpiked with known amounts of Co(II) and Hg(II) to give final concentrations as 0.010 mg kg−.
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