According to data reported so far, radioactive iodine is the main contaminant and concentrations in some food samples have been detected at levels above the Japanese regulatory limits.
The WHO also stressed that melamine is a contaminant that should not be in food, although sometimes it is unavoidable. So the tolerable level of melamine shouldn't be seen as a safe level.
世卫强调，三聚氰胺这种污染物不应在食品中出现，但有时无法避免，所以这是耐受标准而不是安全标准。
3
For the improvement of the standard system of rice noodles, the main problems in the present three rice noodle standards, such as contaminant residues and food additives, were investigated.