Environmental pollutant
And
Food safety
Yuan Lei 11513026
What is environmental pollutant
Adverse effects of the decline in the quality of human beings and other living beings caused by human activities
and transportation
Acid rain
Definition: acid precipitation , pH<5.65。
Source:SO2和 NOX
Sulfuric acid, nitric acid
Harm
Danger to plants and animals Poor harvest Bad quality of water
High Soil residual rate, > 90% Do not disappear, long half-life
Mercury
Source: Industrial waste, pesticides, waste batteries
Toxicity Alkyl mercury > divalent mercury > elemental mercury
Phenolic pollutants
Harm
Harm to Fish ,microorganisms, crops 0.1~0 .2 mg/L, fish can not be eat 6.5~9.3 mg/L, damage fish gills and pharynx, lead to abdominal bleeding Higher than 100 mg/L, causing crops withered Vomiting, diarrhea, loss of appetite, dizziness