Innovative Method Orange Gradient Index (IMOGI): A new tool for assessing analytical methods in terms of innovation and modernization

Abstract

The Innovative Method Orange Gradient Index (IMOGI) is a novel framework for evaluating analytical methods based on innovation and modernization, addressing a critical gap in current assessment tools that often focus on environmental sustainability while overlooking methodological advancement. The tool is freely available for download at (IMOGI Tool). It provides a user-friendly interface for rapid benchmarking. IMOGI evaluates methods using ten predefined criteria including novelty, technological advancement, automation, miniaturization, green and white analytical chemistry principles and others. Visually, IMOGI is displayed as ten concentric circular rings, each representing one criterion. Each criterion has structured response options linked to objective scores, producing a reproducible, transparent assessment. Together, the rings form a multi-layered doughnut chart that symbolizes the depth and breadth of innovation and modernization. Each ring is color-coded according to its score; pale orange for low innovation, light orange for moderate innovation, and deep orange for high innovation. Collectively, the rings create a radiating orange gradient, providing an immediate visual impression of the method’s innovation profile. The assessment results are expressed both visually and numerically, with a cumulative score (0–100) displayed at the center to quantify overall performance. In contrast to the survey-based Violet Innovation Grade Index (VIGI), which depends on subjective user responses and may introduce bias, IMOGI employs structured, predefined criteria and measurable indicators, ensuring transparent, reproducible, and evidence-based evaluation. Scoring is based on objective methodological attributes rather than perception, providing consistency and comparability across analytical approaches. Moreover, while VIGI classifies methods as innovative when scores exceed 50, IMOGI applies stringent evaluation thresholds: methods scoring above 50 are considered highly innovative, those scoring 30–50 are acceptable innovative, and those below 30 are low in innovation. This approach enables clearer differentiation and a more credible ranking of innovation levels. Its applicability was demonstrated across six analytical methods covering diverse analyte classes and instrumental techniques, validating its practicality and discriminatory capacity in identifying strengths, weaknesses, and opportunities for improvement. By integrating innovation evaluation with sustainability principles, IMOGI complements existing greenness metrics and provides researchers with a standardized, evidence-based framework to guide the development of smarter, more sustainable, and future-ready analytical practices.