Question

Given below are two statements
Statement I: AAS technique is used for the determination of the mineral profile of milk
Statement II: Na and K can also be determined with the help of flame photometry
In the light of the above statements, choose the most appropriate answer from the options given below

• A. Both Statement I and Statement II are true
• B. Both Statement I and Statement II are false
• C. Statement I is true but Statement II is false
• D. Statement I is false but Statement II is true

Hint:

Mineral Analytical Methods:
Total Mineral Profile Trace Metals = ATOMIC ABSORPTION SPECTROPHOTOMETRY (AAS).
Sodium (Na) & Potassium (K) = FLAME PHOTOMETRY.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Analytical spectroscopy in dairy science: Atomic Absorption Spectrophotometry (AAS) quantifies major and trace mineral profiles (Ca, Mg, Zn, Fe, Cu), and Flame Emission Photometry specifically measures alkali metals (Na and K).
Key Formula or Approach:
\[ \text{Spectroscopic Mineral Analysis: } \text{AAS (Ca, Mg, Zn, Fe, Cu, Mn)} \quad \& \quad \text{Flame Photometry (Na, K, Li)} \]

Step 2: Detailed Explanation:
1. Statement I: Atomic Absorption Spectrophotometry (AAS) (and ICP-OES/MS) is the standard reference quantitative analytical technique used for measuring the mineral profile and trace heavy metals of milk and dairy foods (such as Calcium, Magnesium, Zinc, Iron, Copper, Manganese, Lead). Hence, Statement I is true.
2. Statement II: Flame Emission Photometry (Flame Photometry) is an established, rapid spectroscopic method specifically tailored for determining alkali metal cations—specifically Sodium (Na, $589\text{ nm}$) and Potassium (K, $766\text{ nm}$)—in milk serum and deproteinized milk trichloroacetic acid filtrates. Hence, Statement II is true.

Step 3: Final Answer:
Hence, Both Statement I and Statement II are true, corresponding to option (A).