Dioxin
could be called an invisible devil around us. It brakes into our life silently
and causes invisible threat to our bodies, so that some miserable cases
happened. Moreover, Dioxin impacts on aquaculture and economy, and makes people
live in great fear.
What is Dioxin?
Dioxin
is a general term for 210 different kinds of chemical compound, and it is a
useless by-product in industries. This chemical substance is composed of two
oxygen atoms connected a pair benzodiazepines and united with chlorine. It is colorless,
flameless and toxic fat-soluble chemical substance resulted from
burning or manufacturing substance with chlorine, it will exist in animal fat
stably, and can’t be metabolized.
It is inclusive of 75 kinds chemical compound, the 2,3,7,8-TCDD is the most toxic among them, and the half-life in earth could last 12 years. Therefore, it is called “Century Toxic.” |
Source
In
industries, dioxin is a main by-product in chemical manufacture procedure; in
nature environment, the source of it is forest fire (burning un-polluted wood
might cause trace dioxin); that is, burning is another way of producing dioxin,
especially the hydrocarbon with chlorine. Besides, human activities, cigarette,
car gas emission, fire, industry manufacture of chemical industrial, metal
smelting, pulp bleach with chlorine, city incinerator, medical waste incinerator,
enterprise waste incinerator, pulp, paper manufactory, and chemical factory are
all sources of dioxin.
Effects on body
Dioxin chemical compound is
fat-soluble, and our bodies couldn’t metabolize it; therefore, it will
accumulate in body easily, and result in chronic symptoms.
● Body System:
When body exposes to over 0.1 microgram/kilogram 2,3,7,8-TCDD, it will cause chlorine acne, sharply slimming, serum concentration increase of liver enzyme, and affect immune system.
●Vertical Transmission:
Dioxin induction strengthens enzyme activity, and the induction could be transferred from maternal placenta to fetus. It might cause miscarriage, malformation, defect Cola infant, underweight neonatal, dark brown pigementation skin, developmental retardation, jaundice, immune dysfunction, and etc.
●Carcinogenesis:
When body assimilates certain dose dioxin, it will result in soft tissue sarcoma; long time dioxin intake would increase the carcinogenic possibility, and liver cancer, lung cancer, stomach cancer, and lymph cancer are related with dioxin.
●Reproduction Toxicity:
Dioxin will decrease the amount of male sperm, reduce male sex hormone content, change the weight of testis and other reproductive organ, change testis type, and reduce reproductive capacity; as for female, it will vary the period hormone abnormally, make neonatal underweight, and be easy to abort or have oaf.
● Body System:
When body exposes to over 0.1 microgram/kilogram 2,3,7,8-TCDD, it will cause chlorine acne, sharply slimming, serum concentration increase of liver enzyme, and affect immune system.
●Vertical Transmission:
Dioxin induction strengthens enzyme activity, and the induction could be transferred from maternal placenta to fetus. It might cause miscarriage, malformation, defect Cola infant, underweight neonatal, dark brown pigementation skin, developmental retardation, jaundice, immune dysfunction, and etc.
●Carcinogenesis:
When body assimilates certain dose dioxin, it will result in soft tissue sarcoma; long time dioxin intake would increase the carcinogenic possibility, and liver cancer, lung cancer, stomach cancer, and lymph cancer are related with dioxin.
●Reproduction Toxicity:
Dioxin will decrease the amount of male sperm, reduce male sex hormone content, change the weight of testis and other reproductive organ, change testis type, and reduce reproductive capacity; as for female, it will vary the period hormone abnormally, make neonatal underweight, and be easy to abort or have oaf.
Toxic Incidents
- Yushō disease happened in Japan in 1968 shocked our world, and the possibility of victims getting lung and liver cancer increased obviously as well.
- ICMESA chemical factory explosion accident at Seveso in Italy in 1976 caused high concentration dioxin leak and made about 200 victims suffering from chlorine acne in local.
- The rice bran oil polluted by polychlorinated biphenyl incident in Taiwan in 1979 not only made victims suffering physically and mentally, but also caused their offspring with lower survival rate, abnormal physical structure, growth retardation, abnormal physical function, and etc.
Transmission & Contact Ways
There
are many source ways for dioxin, such as flow, storage and deposit. It could
transfer the steam or suspended particles of dioxin by air, and move by wind and
water erosion in soil. The temporary storage places for dioxin are soil, bed
mud, and substance with it through the environment recycling or the deposit in unstirred
soil and bed mud.
How does body expose to dioxin?
How does body expose to dioxin?
- Inhale: Spreading the insecticide and herbicide of dioxin, burning, incinerator gas emission and motor vehicle smoke will transmit dioxin in air and people will inhale directly.
- Intake: Animals and plants will absorb pollutant with dioxin set in soil and water, and then remain; therefore, people will eat them and intake dioxin. Generally, this is the most possible way for dioxin to enter our bodies.
Ways for Less Absorption
1.Reduce to use goods with chlorine,
and do recycling well.
People should use more recycled goods, reduce to use goods with chlorine, and avoid burning this kind of goods in incinerator.
2.Reduce to intake fat food.
Dioxin is lipophilic, so milk, protein, and animal products are easily polluted, but plant-based ingredients are less polluted.
3.Reduce incinerator gas emission.
Burning waste goods in the open at factories should be wholly forbidden to reduce dioxin emission.
People should use more recycled goods, reduce to use goods with chlorine, and avoid burning this kind of goods in incinerator.
2.Reduce to intake fat food.
Dioxin is lipophilic, so milk, protein, and animal products are easily polluted, but plant-based ingredients are less polluted.
3.Reduce incinerator gas emission.
Burning waste goods in the open at factories should be wholly forbidden to reduce dioxin emission.
Conclusion
With
the advance of technology, it also makes environment pollution become more
serious. Dioxin not only polluted our
environment but also made people accumulate un-metabolized substance to affect
the immune system; therefore, people should reduce to use goods with chlorine,
and do recycling well. However, the sources of waste are wide, and it is difficult
to control the component, so we should consider the following control solutions.
Rederence (Traditional Chinese Websites)
Quote (Traditional Chinese Websites)
Note 1: 戴奧辛 - 維基百科,http://zh.wikipedia.org/zh-tw/戴奧辛