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Table 2 Results of SEM-EDS analyses of the glazes of 11 selected samples

From: Release of lead from Renaissance lead-glazed ceramics from southern Denmark and northern Germany: implications from acetic acid etching experiments

Sample

Na2O

MgO

Al2O3

SiO2

P2O5

K2O

CaO

TiO2

FeO

PbO

Leach rate

2276 top

0.11

0.42

6.1

29.8

0.12

0.56

0.34

0.47

1.3

60.6

3.70

2276 bot

0.10

0.44

6.8

29.9

0.13

0.54

0.38

0.49

1.3

59.9

 

2278 top

0.11

0.34

4.2

20.4

0.09

0.35

0.16

0.28

1.1

72.9

11116

2278 bot

0.15

0.39

4.2

21.4

0.08

0.33

0.16

0.27

1.2

71.9

 

2279 top

0.06

0.36

4.1

20.0

0.09

0.33

0.16

0.28

1.4

73.1

5969

2279 bot

0.07

0.40

4.0

21.4

0.10

0.37

0.18

0.25

1.3

71.9

 

2280 top

0.09

0.30

4.0

20.5

0.08

0.29

0.13

0.28

1.1

73.2

7822

2280 bot

0.09

0.29

4.0

22.3

0.08

0.36

0.14

0.28

0.8

71.7

 

2281 top

0.07

0.39

4.6

20.5

0.09

0.32

0.17

0.33

1.6

71.9

3714

2281 bot

0.07

0.39

4.6

21.2

0.11

0.36

0.18

0.33

1.5

71.2

 

2283 top

0.01

0.34

4.1

20.8

0.17

0.31

0.15

0.26

0.9

72.9

10258

2283 bot

0.02

0.32

4.3

22.0

0.13

0.30

0.17

0.29

1.0

71.5

 

2287 top

0.01

0.11

2.1

30.0

0.12

0.42

0.13

0.32

0.5

66.3

12.7

2287 bot

0.13

0.29

3.0

30.6

0.10

0.50

0.18

0.26

0.7

64.2

 

2288 top

0.07

0.18

2.0

30.4

0.07

0.43

0.14

0.20

0.4

66.1

58.3

2288 bot

0.12

0.17

3.3

29.9

0.03

0.51

0.16

0.34

0.5

64.9

 

2301 top

0.10

0.41

3.5

34.4

0.11

0.65

0.33

0.35

1.0

59.2

2.60

2301 bot

0.09

0.45

4.6

34.3

0.09

0.72

0.33

0.34

1.1

58.0

 

2305 top

0.00

0.25

2.1

28.4

0.08

0.43

0.19

0.26

0.5

67.8

61.8

2305 bot

0.02

0.61

3.1

31.6

0.08

0.74

0.27

0.20

1.0

62.4

 

2306 top

0.00

0.42

2.3

30.9

0.06

0.62

0.46

0.24

0.6

64.3

7.60

2306 bot

0.01

0.69

3.5

31.7

0.07

0.84

0.60

0.23

1.1

61.3

 
  1. Average data of 5 individual measurements of area scans, normalised to 100 wt%. Sample codes and site names are as in Table 1; pairs of data give the surface glaze near the top and the lower glaze near the bottom but close to the ceramic body