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Table 5 Evaluation of the greenness of the proposed methods using the Eco scale score method

From: Development and validation of derivative UV spectroscopic methods for simultaneous estimation of duloxetine and tadalafil in their binary mixtures: greenness-blueness evaluation

Parameters

 

Penalty points

Reagents

Methanol

6

Heating

–

0

Temperature

25 °C

0

Cooling

–

0

Technique

Spectrophotometry

 

Energy (kWh per sample)

(< 0.1)

0

Occupational hazard

(Analytical process hermitization)

0

Waste

(10 mL)

3

Total penalty points

 

9

Analytical eco-scale total score

 

91

  1. aIf the score is greater than 75, it represents excellent green analysis. If the score is greater than 50, it represents an acceptable green analysis. If the score is less than 50, it represents inadequate green analysis