Table 4: Metal Concentrations (+ Standard Deviation) in rng/kg, of National 

 Bureau of Standards Oyster Tissue, Tested in 1982 and 1983. 



NBS Reported Value Measured Value 



COPPER 63.0 + 3.5 64 + 2.0 (1982) 



63.2 + 1.2 (1983) 



ZINC 852 + 14.0 860 + 14.6 (1982) 



833 + 6.6 (1983) 



IKON 195 + 34.0 155 + 5.0 (1982) 



146 + 2.9 (1983) 



CHROMIUM 0.69 + 0.27 0.77 + 0.15 (1982) 



0.62 + 0.13 (1983) 



