Photo AI
Which of the following substances is best analysed by atomic absorption spectroscopy (AAS)? (A) Calcium (B) Iodine (C) Nitrogen (D) Silicon - HSC - SSCE Chemistry - Question 11 - 2005 - Paper 1
Question 11
Which of the following substances is best analysed by atomic absorption spectroscopy (AAS)? (A) Calcium (B) Iodine (C) Nitrogen (D) Silicon
Worked Solution & Example Answer:Which of the following substances is best analysed by atomic absorption spectroscopy (AAS)? (A) Calcium (B) Iodine (C) Nitrogen (D) Silicon - HSC - SSCE Chemistry - Question 11 - 2005 - Paper 1
Step 1
Identify the substance suitable for AAS
Answer
Atomic Absorption Spectroscopy (AAS) is most effective for the analysis of metal ions in sample solutions. Among the options provided:
- Calcium: A metallic element that can be effectively analyzed using AAS due to its characteristic absorption spectrum.
- Iodine: A non-metal, usually analyzed by other methods like UV-Vis spectroscopy.
- Nitrogen: A gas and non-metal, unsuitable for AAS.
- Silicon: Typically analyzed using other methods, as it does not fit well for AAS detection.
Therefore, the substance best suited for analysis by AAS from the given options is Calcium (A).