UJI TOKSISITAS AKUT DAN UJI TOKSISITAS KRONIS — REVIEW JURNAL

Summary

In this video, Novia Celine Elinda presents a journal review on the acute and chronic toxicity testing of detergents on gurami fish. The study, conducted by Izar Amirul Haq Rahimi and Eko Prasetyo, explores how detergent waste affects fish survival, organ damage, and water quality. The results show that higher detergent concentrations lead to increased mortality, impaired growth, and organ damage, particularly to the gills and liver. The review emphasizes the importance of controlling detergent waste to protect aquatic life, while also noting strengths and weaknesses of the journal, including outdated references and unaddressed topics.

Takeaways

• 😀 The review focuses on an article about the acute and chronic toxicity tests on detergent impact on the survival of gurami fish.
• 😀 The research article was written by Izar Amirul Haq Rahimi and Eko Prasetyo, published in 2020.
• 😀 Gurami fish is an important freshwater aquaculture commodity, and detergent waste is increasingly harmful to aquatic life.
• 😀 The study investigates the lethal concentration of detergent for gurami fish and its effects on their organs (gills and liver).
• 😀 The methods used in the study include toxicity tests (acute and chronic), lethal media tests, and monitoring of water quality.
• 😀 Acute toxicity tests measured fish survival over 24 and 48 hours with detergent concentrations ranging from 0.1 to 100 mg/L.
• 😀 The lethal media test determined the detergent dose needed to kill 50% of the fish population.
• 😀 Chronic toxicity tests studied the long-term effects of detergent exposure on fish, measuring growth, survival, and organ damage.
• 😀 Findings showed that higher detergent concentrations lead to higher mortality rates and organ damage in gurami fish.
• 😀 The study concluded that 10 mg/L is the lower threshold and 100 mg/L is the upper threshold for detergent concentration affecting fish survival.
• 😀 The article's strengths include clear language, comprehensive structure, and informative graphs. However, it has outdated references and lacks detailed discussion on geometric series used in the research.

Q & A

What is the main objective of the research reviewed in the script?

The main objective of the research is to evaluate the toxicity of detergents on the survival of gurame fish, specifically to determine the lethal dose and the harmful effects on their organs, such as the gills and liver.

What is the importance of testing detergent toxicity on gurame fish?

Testing detergent toxicity on gurame fish is important because it helps assess the impact of household waste, like detergent, on aquatic life, particularly in freshwater environments. This research aims to understand how detergent concentrations affect the survival and health of fish.

What were the primary methods used in the study?

The study employed several methods: preparation of tools and materials, acute toxicity testing, median lethal dose testing, chronic toxicity testing, and water quality monitoring. These methods were used to assess the effects of detergent on the fish over different time frames and concentrations.

What is the acute toxicity test, and how was it conducted?

The acute toxicity test aims to observe the short-term lethal effects of detergent on gurame fish. In this test, fish were exposed to detergent concentrations of 0, 1, 10, and 100 mg per liter for 24 and 48 hours. The results showed a high mortality rate at 100 mg per liter.

What is the median lethal dose (LD50) test, and what did it reveal in this research?

The median lethal dose (LD50) test is used to determine the concentration of detergent that causes 50% mortality in the fish population. In this study, the doses tested ranged from 15.84 mg per liter to 100 mg per liter, with higher doses leading to increased mortality rates.

What are the key findings of the chronic toxicity test?

The chronic toxicity test revealed that long-term exposure to detergent affects fish growth, survival, and organ health. Fish experienced stunted growth, reduced survival, and organ damage, particularly in the gills and liver, which were further exacerbated by the detergent's foam reducing oxygen availability in the water.

How does detergent affect the oxygen levels in water, and what impact does this have on the fish?

Detergents produce foam that reduces the contact between water and air, which in turn lowers oxygen levels in the water. This lack of oxygen leads to stress in the fish, resulting in slower growth, decreased survival, and potential organ damage.

What were the concentrations of detergent used in the chronic toxicity test?

The concentrations of detergent used in the chronic toxicity test ranged from 0% to 40% of the lethal dose determined in the median lethal dose test, with the fish being monitored over four time intervals: 24, 48, 72, and 96 hours.

What were the key results from the analysis of water quality during the study?

The water quality analysis showed that the initial water conditions were good, with a pH of 7, and ammonia levels of 0. However, after exposure to detergent, ammonia levels increased, which is indicative of a decline in water quality, negatively affecting the survival of the gurame fish.

What are the strengths and weaknesses of the journal reviewed in the presentation?

The strengths of the journal include its clear and understandable language, well-structured content, and the inclusion of graphs that help explain the findings. However, the weaknesses include outdated references, some punctuation errors, and a lack of discussion on geometric progression, which was mentioned in the study but not elaborated on.