Q39 · CSIR-NET Chemistry, December 2015

Paper: CSIR-NET December 2015 · Subject: Inorganic Chemistry · Chapter: Analytical Chemistry · Topic: Sampling Calibration · Marks: 2 · Difficulty: Easy

The calibration curve in spectrofluorimetric analysis becomes non-linear when

(a)molecular weight of analyte is high

(b)intensity of light source is high

(c)concentration of analyte is high

(d)molar absorptivity of analyte is high

Answer

Answer: C ✓ checked by 4AB · confidence high

The source book printed A; on checking, C is correct — see the explanation.

Book printed (a).

Explanation

At high analyte concentration inner-filter effects and self-absorption make fluorescence non-linear (c).

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