DETERMINATION OF WATER QUALITY STATUS BASED ON HEAVY METAL CONTENTS IN THE RAINY AND DRY SEASON USING THE STORET INDEX IN
PASURUAN SEA WATERS, EAST JAVA
Background: The Pasuruan Sea is a strategic waterway in East Java, located in the Madura Strait. Pasuruan is also one of the highest shellfish and fish producing areas, namely at Lekok Beach, which is generally in the same direction as the Rejoso River and several other tributaries.
Previously, this area was used for industrial and agricultural activities and is considered to have the potential to cause a buildup of river waste that will eventually pollute the sea. In fact, the results showed that the concentration level in Lekok Waters exceeded the safe threshold of 0.44 mg1 so that marine biota originating from these waters, such as shellfish meat, is said to be unsafe for consumption. So the level of pollution caused by heavy metals needs to be considered for water restoration.
Objective: of this research is to determine the level of water quality based on calculating the heavy metal content in the rainy season and dry season. Regarding the method that was decided to carry out this research, it was to use a direct survey method of Pasuruan Sea Waters with two different seasons, namely the rainy season and the dry season. Then samples were taken using purposive sampling at three locations in the Marine Waters of Kraton, Lekok and Nguling Districts using trevally (Selaroides leptolepis) as the organism identified as heavy metals. The test method is to preserve fish kidney samples in a cool box containing ice tubes. Then water samples are taken from each body of water to be tested into 600 ml plastic bottles which are then put into a cool box as well. Next, analysis of the heavy metals Pb Hg and Cd was carried out in the laboratory on the kidney samples of trevally fish and water samples from each marine location tested.
Furthermore, heavy metal parameters and water quality levels were tested using a Ludex storet.
research shows that the levels of Lekok Water in September show the highest heavy metal ef levels, namely Hg (122mg/1), Cd (1.20 mg/1), and Pb (0.55 m P1). Meanwhile, the area with the lowest APN1 levels is the Sea area of Nguling District, and the Kraton Sea area is at a medium pollution level. If studied more deeply, a conclusion can be drawn that the Storet Index for marine water quality in Kraton, Lekok and Nguling Districts is in the polluted water category
with the highest score, namely 74 in September in the rainy season and 16 in April in the dry season. So a statement can be drawn that the scores for the three sea waters are increasing but are still in the moderately well-pollinated category. Meanwhile, measurements of ramin temperature, pH, dissolved oxygen salinity and current speed in the dry season are at optimum results for aquatic organisms.
Regarding the level of water quality in Pasaruan Sea Water, the conclusion was drawn that the heavy metal content still exceeds the quality standards set by the government, namely the light category for the rainy season in September 2019, the dry season in April 2020 at all three stations at the Kraton Lelok research location. So it is hoped that processing improvements will be carried out in an effort to prevent the worsening of the pollution status in Pasuruan waters.
Silakan dicari dari berbagai referensi jurnal dan buku (termasuk SNI 2352:2017 ttg Iradiasi Bahan Pangan) terkait Iradiasi Pangan, MAP, MAS, & CAS
Scrib
Assalamualaikum Wr. Wb.
Good evening Miss Wayan and all my friends. Previously, I would like to thank Miss Wayan as the lecturer and all my friends who I am proud of for the opportunity and time.
Introducing my name is Regina Titisya Nur Cahyani, a student of the Faculty of Fisheries and Marine Science, Universitas Brawijaya.
On this occasion I will explain my material with the title
: Regarding the subject matter that I will discuss, it is divided into 5 things, including
Hal 1 : Before we get to the main topic, we need to know about Indonesia's marine waters.
Indonesia is one of the largest maritime countries in the world. Indonesia has around 70 per cent sea area and 30 per cent land area. Indonesia's archipelago is approximately 13,466, with a coastline of 99,093 km. This shows that one of Indonesia's greatest potentials comes from the diversity of marine and fisheries resources. Coastal areas are areas where land and marine ecosystems are interconnected and influenced by changes that occur on land and at sea. This region has great potential in terms of natural resources, attracting many people who want to utilise these natural resources. So it is necessary to apply policies in its utilisation.
Unfortunately, there are many abuses in the treatment of Indonesia's marine waters, such as seawater pollution that affects the surrounding environment.
Hal 2 : Next About the definition of seawater pollution. So what is seawater pollution? Marine pollution is a situation where there are chemical particles, industrial, agricultural and residential waste, noise, or the spread of invasive (foreign) organisms into the sea, which has the potential to have harmful effects. In addition, the definition of marine pollution refers to Government
Regulation No. 19 of 1999 concerning the Control of Marine Pollution and or Destruction is the entry or inclusion of living things, energy substances and or other components into the marine environment by human activities so that its quality drops to a certain level which causes the marine environment to no longer comply with quality standards or its function. Marine pollution cannot be seen only as a problem that occurs in the sea, because the ocean and land are a unity of ecosystems that cannot be separated and affected by one another.
Hal 3 : Next. This marine pollution will certainly have an impact on marine resources. Moreover, Evidence As many as 75% of Indonesia's waters are classified as highly polluted, 20% are classified as moderately polluted, and 5% are classified as lightly polluted. These polluting wastes consist of industrial waste, agricultural waste, and household waste. So in general, most human activities on land, whether consciously or unconsciously, have had a negative impact on ecosystems, habitats, marine biota and a decline in the quality of the aquatic environment.
Pollution of the marine environment carried out by humans, both directly and indirectly, has resulted in negative impacts such as damage to the sustainability of marine life, making it dangerous for human health, and disruption of marine activities including fishing activities according to research results, (UNCLOS. 1982).
As is the case with fish, shellfish, mollusca products, etc. For example, fish or shellfish are high in heavy metals. These heavy metals can enter the fish body through the body surface, chloride cells in the gills or through the eating process, then accumulate in the body organs and are irreversible or cannot be removed. This results in various damage to fish organs such as gills, kidneys, liver, spleen, brain, heart, and so on.This will certainly have a negative impact on ecosystems, habitats, marine biota and reduce the quality of the aquatic environment. If the threat of pollution is not handled wisely, it can result in increasingly widespread negative impacts on human life and biota.
Hal 4. Selanjutnya. The negative impacts of marine pollution not only harm marine biota and the marine environment, but can also endanger human health and even death, causing socio-
economic losses. Because when humans receive toxins such as heavy metals that cause marine pollution, our organs are also at risk of experiencing disorders or abnormalities. This is because heavy metals that accumulate in the body are one of the causes of degenerative diseases,
especially cancer, tumours, and other non-degenerative diseases.
Hal 5. Hal 6. Next. Therefore, countermeasures are needed to reduce the wider risk of marine pollution. The first treatment can be carried out by organisations, communities and industries.
These include the following:
Meanwhile, efforts that can be made by the government are as follows :
Hal. 7 So it can be concluded that marine water pollution has adverse impacts that can disrupt the continuity of life, especially in the economic, environmental and marine biodata sectors. Marine life identified as polluted is not safe for consumption and can cause various diseases. So it needs to be handled by all parties, not only the government but also the community, organisations, and industry. It is hoped that by making all these efforts we can maximise marine resources and preserve the ocean for the future.
Okay, that's enough of my presentation today. Please Next. Such is the case in the waters of the Pasuruan Sea. Pasuruan Sea waters are the highest shellfish and fish producing area in Lekok Beach. Unfortunately, according to research (Herawati, et al., 2021), the Storet Index for marine water quality is included in the category of polluted waters using the survey method of
organisms identified by heavy metals. The test method is to preserve fish kidney samples in a cooler box containing ice tubes. Then water samples were taken from each water body for testing into 600 ml plastic bottles which were then put into the cool box as well. Subsequently, heavy
metal analyses of Pb Hg and Cd were conducted in the laboratory on mackerel kidney samples and water samples from each of the tested water bodies.
apologise for any shortcomings, good night and Wassalamualaikum Wr. Wb.
