ANALISIS CEMARAN LOGAM Pb, Cd, Zn DALAM MAKANAN DAN MINUMAN KEMASAN KALENG MENGGUNAKAN AAS/SSA

Summary

This presentation discusses the analysis of heavy metal contamination (Pb, Cd, Zn) in canned food and beverages using Atomic Absorption Spectrophotometry (AAS). The study examines samples from both modern and traditional markets, focusing on potential risks from metal contamination. Results show detectable levels of lead and zinc, but within safe limits according to Indonesian standards. Cadmium was not detected. The analysis highlights that traditional market products have slightly higher contamination levels than those from modern markets, although all samples still meet safety requirements. This research underscores the importance of monitoring metal contamination in food packaging for consumer health.

Takeaways

• 😀 The study focuses on analyzing heavy metal contamination (lead, cadmium, and zinc) in canned food and beverages using atomic absorption spectroscopy (AAS).
• 😀 Canned food is popular among consumers due to its practicality, but there are concerns about chemical contamination due to reactions between the food and the metal can.
• 😀 The presence of heavy metals like lead, cadmium, and zinc in cans could pose health risks, even at low concentrations, and accumulate in the body over time.
• 😀 The research uses a descriptive method with a randomized block design, collecting samples of canned food and beverages from both modern and traditional markets in Mulyosari, Surabaya.
• 😀 Samples were analyzed in a laboratory in Surabaya, with only fresh canned goods (less than one year old) included in the study.
• 😀 The preparation process involved weighing 10 grams of the sample, digesting it with nitric acid, heating it, and then diluting the resulting solution for analysis.
• 😀 Lead was measured using a standard solution of lead nitrate, cadmium with cadmium chloride, and zinc with zinc sulfate, using the Lambert-Beer law for concentration calculation.
• 😀 Lead contamination was detected in the samples but still met the standards of the Indonesian National Standard (SNI).
• 😀 Zinc contamination was also found in the samples, but it was below the limit set by the Indonesian National Agency of Drug and Food Control (BPOM).
• 😀 No cadmium contamination was detected, likely due to the very low concentration of cadmium in the samples, which was below the detection threshold of the equipment.
• 😀 The study concludes that lead and zinc contamination in canned food is present but within acceptable limits, with higher contamination levels found in products from traditional markets compared to modern ones.

Q & A

What is the main focus of this presentation?

The main focus of the presentation is to analyze the contamination of heavy metals, specifically lead (Pb), cadmium (Cd), and zinc (Zn), in canned food and beverages using atomic absorption spectrophotometry (AAS).

Why are canned food and beverages a concern regarding heavy metal contamination?

Canned food and beverages are a concern because the metal can packaging can potentially react with the contents inside, releasing heavy metals like lead, cadmium, and zinc, which can be harmful to health, even at low concentrations.

What are the potential health risks of heavy metals in canned food?

The accumulation of heavy metals in the body over time can be harmful to health, as they may lead to various health issues, including poisoning, organ damage, and neurological disorders. Heavy metals are persistent in the body and do not easily leave, which makes them more dangerous.

What metals were specifically analyzed in this research?

The metals specifically analyzed in this research were lead (Pb), cadmium (Cd), and zinc (Zn).

How were the samples prepared for analysis in this study?

The samples were prepared by weighing 10 grams of canned food or beverage, adding nitric acid (HNO3), and heating the mixture at 150°C for 16 hours. Afterward, the sample was further heated at 300°C for 4 hours, filtered, and then diluted with distilled water for analysis.

What is the role of atomic absorption spectrophotometry (AAS) in this research?

Atomic absorption spectrophotometry (AAS) is used in this research to analyze the concentration of heavy metals in the food and beverage samples by measuring the absorbance of light by atoms in the sample, allowing the determination of metal concentration.

What method was used to calculate the concentration of heavy metals in the samples?

The concentration of heavy metals in the samples was calculated using the Lambert-Beer law, which is represented by the equation y = AX + B, where y is the absorbance, X is the concentration, A is the slope, and B is the intercept from the regression analysis.

What were the findings regarding lead contamination in canned food?

Lead contamination was found in the canned food and beverage samples, but the levels were still within the acceptable standards set by the Indonesian National Standard (SNI).

What was the result for cadmium contamination in the samples?

Cadmium was not detected in the canned food and beverage samples, possibly due to its very low concentration, which was undetectable by the equipment used in the study.

What was the difference in heavy metal contamination between canned food from traditional and modern markets?

The study found that canned food and beverages from traditional markets had higher levels of lead and zinc contamination compared to those from modern markets, although both still met the regulatory standards.