Arsenic is a naturally occurring element that can contaminate aquaculture systems and harm fish and humans. It accumulates in fish through their food and water. In aquaculture, arsenic in the water and sediments can build up in fish and cause diseases like black spot disease, reducing fish production. Humans are also at risk if they consume contaminated fish or drink arsenic-laden water, as arsenic exposure has been linked to cancers and other health issues. Treatment methods aim to remove arsenic from water sources or aid detoxification. Further efforts are needed to address arsenic contamination and protect aquatic and human health.

1. Submitted
chhoto kisku
Arsenic problem in aquaculture and its solutions.
AAH-312

2. WHAT IS ARSENIC?
Arsenic is a naturally occurring element in the earth’s
crust.
Arsenic is usually found combined with one or more
elements.
 Arsenic compounds are classified as:
Inorganic Arsenic (usually combined with
oxygen, chlorine, or sulfer)
Organic Arsenic (combined with carbon &
hydrogen)
 Organic arsenic is usually less harmful than inorganic
arsenic.

3. BEAUTIFUL, BUT DEADLY

4. BACKGROUND
 Arsenic occurs naturally in the environment so we can
be exposed by breathing air and from consuming
contaminated food or water.
 The form of arsenic compound found in fish, called
organocarsenic, is much less harmful.
 If exposed to arsenic, the harmful effects that may
occur largely depend on the way people are exposed.

5. Physicochemical Properties of Arsenic
Atomic weight= 75
Chemical symbol= As
Common synonyms= Grey Arsenic
State of room temperature= Solid
Specific gravity= 5.7 at 14’c ( water=1)
Water solubility= slowly soluble in cold water
Odor= Odorless
the Maximum Contaminant Level (MCL) for
inorganic arsenic in drinking water from 50 ppb
to 10 ppb (ppb = parts per billion or micrograms
per liter).

6. STATE OF ARSENIC
 There are two main forms of arsenic.
Organic forms of
monomethylarsonic acid (MMAA)
dimethylarsenic acid (DMAA)
Inorganic forms of
arsenide (As III)
arsenate (As V)
O
||
H3C-As-
CH3
|
OH

7. ARSENIC PROBLEM IN AQUACULTURE
Aquaculture is one of the fastest growing
food production sector, approximately
40% fish food are come from
aquaculture. But now a days it decreases
day by day. There are some problem are
occur in aquaculture system which effect
of fishes. Arsenic is one of them, which
cause fish diseases. So the water
quality become damage and production
rate of fishes is decrease.

8. CONT…….
Arsenic accumulates in fish body by
several way, Azolla accumulates heavy
metals by
- active way
- passive way
Arsenic slightly soluble in water and
mixed with bottom sediments. When
fishes are eat Azolla or bottom
sediments, they are effected by arsenic
and exposed to dead.

9. FISH DISEASES CAUSED BY ARSENIC
Normally black spot disease is
occurred for arsenic. Arsenic is one of
the most toxic elements to fish. Acute
exposures can result in immediate
death because of
As-induced increases in mucus
production, causing suffocation, or
direct detrimental effects on the gill
epithelium.

10. Effects on biota
Growth Inhibition
Decrease Species Diversity
Decreased Photosynthetic Rates of Primary Producers
Reproductive Failure
Behavioral Effects
Lethality
Death
Arsenic contaminated environments are
characterized by limited species abundance and
diversity

11. Common e symptoms of arsenic disease on fish body

12. WHERE DOES IT COME FROM ?
Natural Sources
Weathering of Bedrock,
The most common of which is arsenopyrite.
Anthropogenic Byproducts
From Industry and Agriculture.

14. ARSENIC EFFECT ON HUMAN BODY
Arsenic affect not only for fishes but it
mostly effected on human body. Mainly
BLACK SPOT disease is found on human
body. These cause by several way, mainly
through of drinking water. On the other
hand we eat arsenic effected fishes and
product and it accumulated in our body.

15. Diabetes
Bladder Cancer
Prostate Cancer
Kidney Cancer
Skin Cancer
Cancer of the Nasal Passages
Lung Cancer
Liver Cancer
Skin Lesions
Death
Effects on the Human

16. 16
Blackfoot Disease
Skin cancer
Arsenic lesions on hands,
missing finger
Arsenic lesions on hand, cancer
ARSENIC EFFETED HUMAN BODY

17. Uses of Arsenic
Past
Insecticides
Herbicides
Paints
Dyes
Used as a bronze alloy during
the Bronze Age
Current
Wood Preservative
Production of Glass
Electronics Industry
Manufacturing of copper
and other metals
Medicine

18. Treatment or removal method
Only two known treatment options for arsenic contaminated waters
Expensive Chemical Treatments
Tertiary water treatments like chemical precipitation,
ion exchange, membrane filtration, oxygen therapy,
chelating therapy, saunas and other methods
used for detoxification of heavy metals is the
usual treatment.
OR
Inexpensive Environmental Treatments
Phytoremediation!

19. CONCLUSION
As is one of the major contaminant in aquatic
environment as well as in terrestrial environment .
Intake from air, soil, and water is usually much smaller
and we have to aware about its.
Presence of this death may also be occur.
The cause of death in arsenic poison is often shock,
which occurs when the heart can't get enough blood to
the body.

20. REFERRENCES:
www.wikipedia.com
www.google.com
www.FAO.org
Environmental Chemistry by
DBS

21. 21
The Future is in our hands!
Thank You