Combining in Silico Tools with Multicriteria Analysis for Alternatives Assessment of Hazardous Chemicals: Accounting for the Transformation Products of decaBDE and Its Alternatives
Journal article, 2021

Transformation products ought to be an important consideration in chemical alternatives assessment. In this study, a recently established hazard ranking tool for alternatives assessment based on in silico data and multicriteria decision analysis (MCDA) methods was further developed to include chemical transformation products. Decabromodiphenyl ether (decaBDE) and five proposed alternatives were selected as case chemicals; biotic and abiotic transformation reactions were considered using five in silico tools. A workflow was developed to select transformation products with the highest occurrence potential. The most probable transformation products of the alternative chemicals were often similarly persistent but more mobile in aquatic environments, which implies an increasing exposure potential. When persistence (P), bioaccumulation (B), mobility in the aquatic environment (M), and toxicity (T) are considered (via PBT, PMT, or PBMT composite scoring), all six flame retardants have at least one transformation product that can be considered more hazardous, across diverse MCDA. Even when considering transformation products, the considered alternatives remain less hazardous than decaBDE, though the range of hazard of the five alternatives was reduced. The least hazardous of the considered alternatives were melamine and bis(2-ethylhexyl)-tetrabromophthalate. This developed tool could be integrated within holistic alternatives assessments considering use and life cycle impacts or additionally prioritizing transformation products within (bio)monitoring screening studies.


Ziye Zheng

Umeå University

Hans Peter H. Arp

Stiftelsen Norges Geotekniske Institutt

Norwegian University of Science and Technology (NTNU)

Gregory Peters

Chalmers, Technology Management and Economics, Environmental Systems Analysis

Patrik L. Andersson

Umeå University

Environmental Science and Technology

0013936X (ISSN) 15205851 (eISSN)

Vol. 55 2 1088-1098

Subject Categories

Production Engineering, Human Work Science and Ergonomics

Other Environmental Engineering

Environmental Management





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3/8/2021 1