HPLC Peak Area Calculator

Precise Chromatographic Analysis

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Peak Area Calculator

Calculate peak area and concentration using internal/external standard method.

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Resolution Calculator

Calculate resolution between two adjacent peaks.

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Theoretical Plates Calculator

Calculate column efficiency using retention time and peak width.

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Understanding HPLC Analysis

Peak Integration

Key concepts include:

  • Area calculation methods
  • Baseline determination
  • Peak shape analysis
  • Integration parameters
  • Signal-to-noise ratio

Resolution Factors

Important parameters:

  • Peak Resolution:
    • Baseline separation (Rs > 1.5)
    • Partial separation (1.0 < Rs < 1.5)
  • Selectivity:
    • Peak spacing
    • Mobile phase effects

Column Efficiency

Factors affecting efficiency:

  • Particle size
  • Flow rate
  • Temperature
  • Mobile phase composition
  • Sample injection volume

Method Development

Optimization strategies:

  • Mobile phase selection
  • Gradient optimization
  • Column selection
  • Sample preparation
  • Method validation

Essential HPLC Formulas

Peak Area

Area ≈ 1.064 × h × w₁/₂

Where:

h = Peak height

w₁/₂ = Width at half height

Resolution

Rs = 2(tR₂ - tR₁)/(w₁ + w₂)

Where:

tR = Retention time

w = Peak width

Theoretical Plates

N = 16(tR/w)²

Where:

N = Number of plates

tR = Retention time

w = Peak width at base