硝酸態窒素-農� ��水産省.pdf

Key points include:

Nitrate and nitrite can cause methemoglobinemia, a condition that reduces the ability of blood to carry oxygen.
Regulatory measures in Japan include guidelines for nitrate and nitrite levels in food, such as 10 mg/L for mineral water and 10 mg/L for environmental water quality.
The European Union has set maximum levels for nitrate in food, such as 3,500 mg/kg for fresh lettuce.
The World Health Organization recommends a maximum level of 50 mg/L for nitrate in drinking water.
In Japan, surveys have shown that some vegetables, such as spinach and lettuce, contain high levels of nitrate.
Underground water quality measurements have also shown that some areas in Japan exceed the environmental standard for nitrate.

Overall, the text highlights the importance of monitoring and regulating nitrate and nitrite levels in food and water to protect public health.