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Table 2 Found values (m = 5 independent samples) in the analysis of CRMs compared to certified values (mg/kg)

From: Validation of an analytical method based on the high-resolution continuum source flame atomic absorption spectrometry for the fast-sequential determination of several hazardous/priority hazardous metals in soil

 

BCR 025-050a

LGC 6135a

LGC 6141a

NCSDC

Recoveryb(%)

 

Found

Certified

Found

Certified

Found

Certified

Found

Certified

ICP-OES

HR-CS AAS

 

ICP-OES

HR-CS AAS

 

ICP-OES

HR-CS AAS

 

ICP-OES

HR-CS AAS

 

ICP-OES

HR-CS AAS

   

Cd

340 ± 45.0

383 ± 76.0

369 ± 46.3

-

 

-

-

-

-

2.50 ± 0.5

2.40 ± 0.2

2.45 ± 0.3

97 ± 17

101 ± 15

Co

4.00 ± 0.80

3.98 ± 0.80

4.07 ± 0.93

19 ± 3

16 ± 4

20 ± 4

-

-

-

17.1 ± 1.5

17.0 ± 2.0

16.5 ± 1.8

99 ± 16

94 ± 20

Cr

448 ± 41.0

403 ± 34.0

441 ± 50.1

349 ± 12

344 ± 30

336 ± 28

120 ± 20

115 ± 20

130 ± 31

88 ± 5

105 ± 6

90 ± 8

99 ± 10

100 ± 11

Cu

8.35 ± 1.68

9.62 ± 1.60

7.76 ± 1.68

100 ± 5

102 ± 11

105 ± 5

52.2 ± 0.8

52.3 ± 7.5

51.1 ± 13

54 ± 5

51 ± 2

53 ± 6

102 ± 14

105 ± 12

Ni

12.0 ± 3.25

12.9 ± 1.80

12.2 ± 3.54

240 ± 16

275 ± 27

227 ± 13

50 ± 5

50 ± 5

49 ± 13

34 ± 6

30 ± 3

32

103 ± 17

106 ± 11

Pb

1448 ± 108

1454 ± 188

1447 ± 203

400 ± 21

395 ± 10

391 ± 16

75.1 ± 12

74.1 ± 10

75.8 ± 16

78 ± 5

75 ± 5

79 ± 12

100 ± 10

99 ± 10

Zn

55.0 ± 8.14

60.6 ± 11.05

51.8 ± 8.29

316 ± 18

339 ± 26

316 ± 41

167 ± 30

168 ± 30

169 ± 39

248 ± 38

245 ± 24

251

101 ± 14

105 ± 14

  1. a – average ± U (U – expanded uncertainty for 95% confidence level).
  2. b – average recovery for 95% confidence level.