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Table 1 Mean melamine migration by pH and Run

From: The effects of pH on the migration of melamine from children’s bowls

N = 5 for all groups Mean melamine migration
Brand 1 Brand 2
Run pH pH
3.0 5.0 7.0 9.0 11.0 3.0 5.0 7.0 9.0 11.0
1 μg/L 76.7 32.3 24.9 31.0 35.4 52.0 24.9 37.6 22.4 22.4
11.8a 5.3 2.8 4.8 4.9 19.8 3.8 6.8 1.8 6.5
μg/cm2 0.100 0.042 0.033 0.041 0.046 0.064 0.031 0.046 0.028 0.028
0.015 0.007 0.004 0.006 0.006 0.024 0.005 0.008 0.002 0.008
2 μg/L 37.4 22.6 23.3 32.2 17.5 18.0 6.1 6.1 10.1 11.9
13.3 7.4 5.8 9.3 4.6 9.3 2.0 2.0 3.7 5.4
μg/cm2 0.049 0.030 0.030 0.042 0.023 0.022 0.007 0.007 0.012 0.015
0.017 0.010 0.008 0.012 0.006 0.011 0.002 0.002 0.005 0.007
3 μg/L 31.8 8.4 8.3 5.7 10.3 10.7 7.7 8.7 <4.1 11.8
9.2 2.8 2.7 1.5 4.2 6.6 2.2 4.6 0.0 4.8
μg/cm2 0.042 0.011 0.011 0.007 0.014 0.013 0.010 0.011 <0.005 0.015
0.012 0.004 0.004 0.002 0.005 0.008 0.003 0.006 0.000 0.006
4 μg/L 23.5 7.2 15.5 17.7 17.8 10.7 12.9 10.4 7.0 7.9
9.4 3.1 1.3 3.0 1.2 4.5 3.8 3.9 2.9 3.6
μg/cm2 0.031 0.009 0.020 0.023 0.023 0.013 0.016 0.013 0.009 0.011
0.012 0.004 0.002 0.004 0.002 0.006 0.005 0.005 0.004 0.004
5 μg/L 26.9 6.2 10.2 <4.1 <4.1 8.7 <4.1 <4.1 <4.1 8.4
6.3 2.1 2.5 0.00 0.00 4.6 0.00 0.00 0.00 2.6
μg/cm2 0.035 0.008 0.013 <0.005 <0.005 0.011 <0.005 <0.005 <0.005 0.010
0.008 0.003 0.003 0.000 0.000 0.006 0.000 0.000 0.000 0.003
10 μg/L 30.3 <4.1 <4.1 <4.1 <4.1 11.3 <4.1 6.7 <4.1 <4.1
8.3 0.00 0.00 0.00 0.00 4.6 0.00 2.6 0.00 0.00
μg/cm2 0.040 <0.005 <0.005 <0.005 <0.005 0.014 <0.005 0.008 <0.005 <0.005
0.011 0.000 0.000 0.000 0.000 0.006 0.000 0.003 0.000 0.000
  1. astandard error of the mean