Part 1 : Analisa Cu : Air Minum Dalam Kemasan (SNI 3553:2015) dengan Instrumen AAS Shimadzu AA7000

Summary

In this educational video, Nurwahid from the Chemistry Laboratory of SMK-SMAKPA Makassar demonstrates the analysis of copper (Cu) in bottled drinking water using a Shimadzu AA-7000 atomic absorption spectrometer (AAS). The analysis follows SNI 3553:2015 standards, emphasizing the importance of ensuring that Cu levels in bottled water do not exceed 0.5 mg/L. The video covers the preparation of standard solutions, sample preparation, and calibration of the instrument, including the setup of the autosampler and ensuring the correct operation of the AAS. The process highlights the importance of proper procedures for ensuring safe drinking water quality.

Takeaways

• 😀 The presenter is Nurwahid from the Chemistry Laboratory at SMK-SMAKPA Makassar, introducing a demonstration of metal analysis using different Atomic Absorption Spectrophotometry (AAS) instruments.
• 😀 The main instrument featured is the Shimadzu AA-7000, a Japanese brand of AAS equipment, as opposed to the previously used AAS instruments like the Pinnacle 900T.
• 😀 The video will focus on analyzing metal content in bottled drinking water, specifically targeting copper (Cu) as one of the regulated elements.
• 😀 According to the SNI 3553-2015 standard, bottled drinking water must not exceed 0.5 mg/L of copper, emphasizing the importance of controlling copper levels in consumable water.
• 😀 Copper is highlighted as a harmful metal when consumed in excess, posing health risks, thus making its analysis critical for safety.
• 😀 Proper sample preparation and standard solutions for copper are essential for accurate analysis using AAS instruments.
• 😀 The method used for analysis adheres to the SNI-3553 standard, ensuring the procedure follows recognized scientific guidelines.
• 😀 Before starting the analysis, it is essential to check the instrument’s components, including the cathode lamp, ensuring it is the correct one for analyzing copper.
• 😀 The Shimadzu AA-7000 AAS uses a rotating turret to position different cathode lamps, with copper being analyzed using the lamp in slot number 3.
• 😀 The setup includes an acetylene burner, and the use of an autosampler is demonstrated to facilitate automated sample loading for analysis.
• 😀 Once all preparations and instrument checks are completed, the analysis begins by loading the sample and standard solutions into the autosampler and starting the instrument's software for analysis.

Q & A

What is the focus of this video transcript?

The video focuses on demonstrating the analysis of copper (Cu) in bottled drinking water using an Atomic Absorption Spectrophotometer (AAS) instrument, specifically the Shimadzu AA-7000.

Why is it important to analyze copper in bottled water?

It is important because bottled water must meet specific safety standards to be distributed to the public. According to the SNI 3553:2015 standard, copper (Cu) content must not exceed 0.5 mg per liter, as higher concentrations can be harmful to human health.

What type of instrument is used in the analysis?

The analysis is performed using an Atomic Absorption Spectrophotometer (AAS), specifically the Shimadzu AA-7000, which is capable of analyzing metal content in water.

What is the role of the cathode lamp in the Shimadzu AA-7000?

The cathode lamp in the Shimadzu AA-7000 is used as the light source for the analysis. It emits specific wavelengths of light that correspond to the metal being analyzed—in this case, copper (Cu).

What is the significance of using a specific method, such as SNI 3553:2015, for preparing the sample?

Using a standardized method like SNI 3553:2015 ensures the analysis is accurate, reproducible, and compliant with regulatory standards, which is crucial for validating the safety of bottled water for public consumption.

What is the purpose of the autosampler in this analysis?

The autosampler is used to automatically introduce samples into the instrument for analysis. This streamlines the process and ensures that each sample is analyzed consistently and accurately.

Why is it important to prepare the standard solutions of copper (Cu) before starting the analysis?

Preparing the standard solutions is crucial for calibration. They are used to create a calibration curve that allows the instrument to quantify the copper content in the water samples.

How is the instrument checked before beginning the analysis?

Before starting the analysis, the instrument is checked to ensure that the cathode lamp is properly installed for copper analysis and that all utilities, such as the acetylene burner, are ready for operation.

What safety considerations are mentioned in the script for the analysis?

While the script does not provide detailed safety instructions, it implies the importance of using proper equipment, like the acetylene burner, and ensuring that all instruments are correctly set up to prevent errors during the analysis.

How does the Shimadzu AA-7000 differ from other AAS instruments?

The Shimadzu AA-7000 is a specific brand and model of Atomic Absorption Spectrophotometer, which features unique components like the rotating turret for lamp positioning and the ability to handle various metal analyses efficiently, as demonstrated in the video for copper.