Concentration (mg/kg)

B1

B12

B25

B37

B50

996.52

1004.44

997.37

993.55

996.93

998.54

996.81

997.58

999.93

998.79

995.69

993.97

993.81

985.94

995.06

992.10

992.34

995.92

997.87

996.64

999.40

996.32

998.50

1000.59

992.41

998.78

996.77

998.24

999.32

992.99