Abstract
In this era of advanced industrialization, all the living beings and environment are exposed to multicomponent mixtures of different classes of chemicals such as organics, pesticides, heavy metals, and pharmaceuticals which may cause direct or indirect hazards to humans, wildlife, aquatic systems, and ecosystems. The regulatory authorities have mostly relied on the single chemical risk assessment, instead of considering the impact of complex chemical mixtures. It is also well known that toxicity data for the individual components is available for a fraction of all existing chemicals in environment. The condition is much worse as there is minimal toxicity data for complex multicomponent chemical mixtures, and the nature of toxicity of a mixture (synergism and/or antagonism) will be entirely different from the toxicity of the single chemicals. A number of regulatory authorities have proposed several methodologies and guidance for the evaluation of hazardous effects of multicomponent chemical mixtures. However, a standard, significant, and reliable approach for evaluation of toxicity of chemical mixtures and their management across diverse monitoring sectors is lacking. In the present chapter, we have illustrated the basic concepts of mixture toxicity assessment, such as concentration addition, independent action, and interaction (synergism and/or antagonism), as well as focused on the computational approaches, such as quantitative structure-activity relationship (QSAR), which is already proven as an efficient alternative method for toxicity prediction of chemicals by regulatory authorities for decision making. Subsequently, we have also provided a brief detail on several ongoing research projects in the European Union (EU), funded by the current European Research and Innovation Programme Horizon 2020 or the Seventh Framework Programme for mixture toxicity prediction. The present chapter also explains the importance of evaluation of chemical mixture toxicity and essential steps in basic QSAR modelling in the context of mixtures. Additionally, we have reported the successful application of QSAR in the prediction of mixture toxicity of different classes of chemicals such as pharmaceuticals, pesticides, metals, and organic industrial chemicals.
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References
Evans RM, Martin OV, Faust M, Kortenkamp A (2016) Should the scope of human mixture risk assessment span legislative/regulatory silos for chemicals? Sci Total Environ 543:757–764
Commission, EE (2012) Communication from the Commission to the Council the combination effects of chemicals. Chem Mix Com 10
EPA, U (2007) Concepts, methods, and data sources for cumulative health risk assessment of multiple chemicals, exposures and effects: a resource document (final report). US Environmental Protection Agency, Washington, D.C.; EPA/600/R-06: 2007
Pohl HR, Mumtaz M, McClure PR, Colman J, Zaccaria K, Melia J, Ingerman L (2018) Framework for assessing health impacts of multiple chemicals and other stressors. CDC stack public health publication, Atlanta, USA
Meek M, Boobis AR, Crofton KM, Heinemeyer G, Van Raaij M, Vickers C (2011) Risk assessment of combined exposure to multiple chemicals: a WHO/IPCS framework. Regul Toxicol Pharmacol 60:S1–S14
EFSA, EFSA (2008) Opinion of the Scientific Panel on Plant Protection products and their Residues to evaluate the suitability of existing methodologies and, if appropriate, the identification of new approaches to assess cumulative and synergistic risks from pesticides to human health with a view to set MRLs for those pesticides in the frame of Regulation (EC) 396/2005. EFSA J 6:705
Scher S (2012) Opinion on the toxicity and assessment of chemical mixtures. Scientific Committees on Health and Environmental Risks (SCHER), Scientific Committee on Emerging and Newly Identified Health Risks (SCENIHR) European Commission, Brussels
Bopp SK, Barouki R, Brack W, Dalla Costa S, Dorne J-LC, Drakvik PE, Faust M, Karjalainen TK, Kephalopoulos S, van Klaveren J (2018) Current EU research activities on combined exposure to multiple chemicals. Environ Int 120:544–562
EDC-MixRisk (2019) https://edcmixrisk.ki.se/
HBM4EU (2019) https://www.hbm4eu.eu/
SOLUTIONS (2019) https://www.solutions-project.eu/project/
EuroMix (2019) https://www.euromixproject.eu/
EUToxRisk (2019) http://www.eu-toxrisk.eu/
Yang R, Thomas RS, Gustafson DL, Campain J, Benjamin SA, Verhaar H, Mumtaz MM (1998) Approaches to developing alternative and predictive toxicology based on PBPK/PD and QSAR modeling. Environ Health Perspect 106:1385–1393
Martens M, Mosselmans G, Fumero S, Jacobs G, Lafontaine A (1984) Some thoughts on a possible regulatory approach at EEC level on the classification and labeling of dangerous preparations. Regul Toxicol Pharmacol 4:145–156
Logan DT, Wilson HT (1995) An ecological risk assessment method for species exposed to contaminant mixtures. Environ Toxicol Chem An Inter J 14:351–359
europea, UeC (1996) Technical guidance document in support of commission directive 93/67/EEC on risk assessment for new notified substances and commission regulation (EC) N. 1488/94 on risk assessment for existing substances. Office for official publications of the European communities: 1996. European Commission, Brussels
OPP, EPA (2000) Proposed guidance on cumulative risk assessment of pesticide chemicals that have a common mechanism of Toxicity, US EPA, Washington DC
Greco WR, Bravo G, Parsons JC (1995) The search for synergy: a critical review from a response surface perspective. Pharmacol Rev 47:331–385
Altenburger R, Boedeker W, Faust M, Grimme LH (1993) Aquatic toxicology, analysis of combination effects. In: Handbook of hazardous materials. Academic Press, San Diego, pp 15–27
Kortenkamp A, Altenburger R (1998) Synergisms with mixtures of xenoestrogens: a reevaluation using the method of isoboles. Sci Total Environ 221:59–73
Bödeker W, Altenburger R, Faust M, Grimme L (1990) Methods for the assessment of mixtures of plant protection substances (pesticides): mathematical analysis of combination effects in phytopharmacology and ecotoxicology. Nachr bl Dtsch Pflanzenschutzd 42:70–78
Schmähl D (1980) Combination effects in chemical carcinogenesis. In: Further studies in the assessment of toxic actions. Springer, Berlin, pp 29–40
Monosson E (2004) Chemical mixtures: considering the evolution of toxicology and chemical assessment. Environ Health Perspect 113:383–390
Teuschler LK, Hertzberg RC (1995) Current and future risk assessment guidelines, policy, and methods development for chemical mixtures. Toxicology 105:137–144
Altenburger R, Backhaus T, Boedeker W, Faust M, Scholze M, Grimme LH (2000) Predictability of the toxicity of multiple chemical mixtures to Vibrio fischeri: mixtures composed of similarly acting chemicals. Environ Toxicol Chem An Inter J 19:2341–2347
Hayes AW (2007) Principles and methods of toxicology. Crc Press
Kar S, Leszczynski J (2019) Exploration of computational approaches to predict the toxicity of chemical mixtures. Toxics 7:15
Borzelleca JF (2001) The art, the science, and the seduction of toxicology: an evolutionary development. Principles and methods of toxicology
Brack W, Ait-Aissa S, Burgess RM, Busch W, Creusot N, Di Paolo C, Escher BI, Hewitt LM, Hilscherova K, Hollender J (2016) Effect-directed analysis supporting monitoring of aquatic environments—an in-depth overview. Sci Total Environ 544:1073–1118
Groten JP, Feron VJ, Sühnel J (2001) Toxicology of simple and complex mixtures. Trends Pharmacol Sci 22:316–322
Scher S (2011) SCCS toxicity and assessment of chemical mixtures (pp 1–50), European commission, Brussels
Kortenkamp A, Backhaus T, Faust M (2007) State of the art report on mixture toxicity. Final Report to the European Commission under Contract Number 070307, The School of Pharmacy, University of London, London
Kienzler A, Berggren E, Bessems J, Bopp S, van der Linden, S, Worth A (2014) Assessment of mixtures-review of regulatory requirements and guidance. Joint Research Centre, Science and Policy Reports. European Commission, Luxembourg
Loewe S, Muischnek H (1926) Über kombinationswirkungen. Naunyn Schmiedeberg’s Arch Pharmacol 114:313–326
Loewe S (1953) The problem of synergism and antagonism of combined drugs. Arzneim Forsch 3:285–290
Berenbaum MC (1985) The expected effect of a combination of agents: the general solution. J Theor Biol 114:413–431
Backhaus T, Sumpter J, Blanck H (2008) On the ecotoxicology of pharmaceutical mixtures. In: Pharmaceuticals in the environment. Springer, Berlin, Heidelberg, pp 257–276
Cedergreen N (2014) Quantifying synergy: a systematic review of mixture toxicity studies within environmental toxicology. PLoS One 9:e96580
Rodea-Palomares I, González-Pleiter M, MartÃn-Betancor K, Rosal R, Fernández-Piñas F (2015) Additivity and interactions in ecotoxicity of pollutant mixtures: some patterns, conclusions, and open questions. Toxics 3:342–369
Bliss C (1939) The toxicity of poisons applied jointly 1. Annu Appl Biol 26:585–615
Faust M, Altenburger R, Backhaus T, Blanck H, Boedeker W, Gramatica P, Hamer V, Scholze M, Vighi M, Grimme L (2003) Joint algal toxicity of 16 dissimilarly acting chemicals is predictable by the concept of independent action. Aquat Toxicol 63:43–63
Backhaus T, Altenburger R, Boedeker W, Faust M, Scholze M, Grimme LH (2000) Predictability of the toxicity of a multiple mixture of dissimilarly acting chemicals to Vibrio fischeri. Environ Toxico Chem An Inter J 19:2348–2356
De Zwart D, Posthuma L (2005) Complex mixture toxicity for single and multiple species: proposed methodologies. Environ Toxic Chem An Inter J 24:2665–2676
Suter G (2009) Extrapolation practice for ecotoxicological effect characterization of chemicals. Integr Environ Assess Manag 5:358
Posthuma L, Vijver M (2007) Exposure and ecological effects of toxic mixtures at field-relevant concentrations. Model validation and integration of the SSEO programme RIVM report, 860706002/2007
Ragas AM, Teuschler LK, Posthuma L, Cowan CE (2011) Human and ecological risk assessment of chemical mixtures. In: Mixture toxicity: linking approaches from ecological and human toxicology. CRC-Press, New York, pp 157–212
Jonker M, van Gestel CA, Kammenga JE, Laskowski R, Svendsen C (2016) Mixture toxicity: linking approaches from ecological and human toxicology. CRC press, New York
Backhaus T, Faust M (2012) Predictive environmental risk assessment of chemical mixtures: a conceptual framework. Environ Sci Technol 46:2564–2573
Howard GJ, Webster TF (2009) Generalized concentration addition: a method for examining mixtures containing partial agonists. J Theor Biol 259:469–477
Hadrup N, Taxvig C, Pedersen M, Nellemann C, Hass U, Vinggaard AM (2013) Concentration addition, independent action and generalized concentration addition models for mixture effect prediction of sex hormone synthesis in vitro. PLoS One 8:e70490
EC (2009) EC, State of the art report on mixture toxicity. European Union
Faust M, Altenburger R, Boedeker W, Grimme L (1994) Algal toxicity of binary combinations of pesticides. Bull Environ Contam Toxicol 53:134–141
Backhaus T, Faust M, Scholze M, Gramatica P, Vighi M, Grimme LH (2004) Joint algal toxicity of phenylurea herbicides is equally predictable by concentration addition and independent action. Environ Toxic Chem An Inter J 23:258–264
Cedergreen N, Christensen AM, Kamper A, Kudsk P, Mathiassen SK, Streibig JC, Sørensen H (2008) A review of independent action compared to concentration addition as reference models for mixtures of compounds with different molecular target sites. Environ Toxic Chem An Inter J 27:1621–1632
Belden JB, Gilliom RJ, Lydy MJ (2007) How well can we predict the toxicity of pesticide mixtures to aquatic life? Integr Environ Assess Manag 3:364–372
Norwood W, Borgmann U, Dixon D, Wallace A (2003) Effects of metal mixtures on aquatic biota: a review of observations and methods. Hum Ecol Risk Assess 9:795–811
Kümmerer K (2008) Pharmaceuticals in the environment: sources, fate, effects and risks. Springer Science & Business Media, Berlin
Warne MSJ (2003) In A review of the ecotoxicity of mixtures, approaches to, and recommendations for, their management. Proceedings of the fifth national workshop on the assessment of site contamination, National Environmental Protection Council Service Corporation, Adelaide, pp 253–276
Faust M, Altenburger R, Backhaus T, Blanck H, Boedeker W, Gramatica P, Hamer V, Scholze M, Vighi M, Grimme L (2001) Predicting the joint algal toxicity of multi-component s-triazine mixtures at low-effect concentrations of individual toxicants. Aquat Toxicol 56:13–32
Parvez S, Venkataraman C, Mukherji S (2009) Nature and prevalence of non-additive toxic effects in industrially relevant mixtures of organic chemicals. Chemosphere 75:1429–1439
Solomon KR, Brock TC, De Zwart D, Dyer SD, Posthuma L, Richards S, Sanderson H, Sibley P, van den Brink PJ (2008) Extrapolation practice for ecotoxicological effect characterization of chemicals. CRC Press, New York
Posthuma L, Suter GW II, Traas TP (2001) Species sensitivity distributions in ecotoxicology. CRC Press, New York
Baas J, Jager T, Kooijman B (2010) A review of DEB theory in assessing toxic effects of mixtures. Sci Total Environ 408:3740–3745
Dyer S, Warne MSJ, Meyer JS, Leslie HA, Escher BI (2011) Tissue residue approach for chemical mixtures. Integr Environ Assess Manag 7:99–115
Raies AB, Bajic VB (2016) In silico toxicology: computational methods for the prediction of chemical toxicity. Wiley Interdiscip Rev Comput Mol Sci 6:147–172
Muratov EN, Varlamova EV, Artemenko AG, Polishchuk PG, Kuz'min VE (2012) Existing and developing approaches for QSAR analysis of mixtures. Mol Inform 31:202–221
Roy K, Kar S, Das RN (2015) A primer on QSAR/QSPR modeling: fundamental concepts. Springer, Cham
Khan PM, Rasulev B, Roy K (2017) Chemometric modeling of refractive index of polymers using 2D descriptors: a QSPR approach. Comput Mater Sci 137:215–224
Khan PM, Roy K, Benfenati E (2019) Chemometric modeling of Daphnia magna toxicity of agrochemicals. Chemosphere 224:470–479
Khan PM, Roy K (2018) QSPR modelling for prediction of glass transition temperature of diverse polymers. SAR QSAR Environ Res 29:935–956
Oecd (2007) Guidance document on the validation of (quantitative) structure activity relationship [(Q) SAR] models. Organisation for Economic Co-operation and Development Paris, France
Tropsha A (2012) Best practices for QSAR model development, validation, and exploitation. Mol Inform 29:476–488
Roy K, Das RN, Ambure P, Aher RB (2016) Be aware of error measures. Further studies on validation of predictive QSAR models. Chemom Intell Lab Syst 152:18–33
Roy K, Kar S, Das RN (2015) Understanding the basics of QSAR for applications in pharmaceutical sciences and risk assessment. Academic press, London
Golbraikh A, Tropsha A (2002) Beware of q2! J Mol Graph Model 20:269–276
Yasri A, Hartsough D (2001) Toward an optimal procedure for variable selection and QSAR model building. J Chem Inf Comput Sci 41:1218–1227
Shahlaei M (2013) Descriptor selection methods in quantitative structure-activity relationship studies: a review study. Chem Rev 113:8093–8103
Cherkasov A, Muratov EN, Fourches D, Varnek A, Baskin II, Cronin M, Dearden J, Gramatica P, Martin YC, Todeschini R (2014) QSAR modeling: where have you been? Where are you going to? J Med Chem 57:4977–5010
Fourches D, Pu D, Tassa C, Weissleder R, Shaw SY, Mumper RJ, Tropsha A (2010) Quantitative nanostructure- activity relationship modeling. ACS Nano 4:5703–5712
Yap CW (2011) PaDEL-descriptor: an open source software to calculate molecular descriptors and fingerprints. J Comput Chem 32:1466–1474
Mauri A, Consonni V, Pavan M, Todeschini R (2006) Dragon software: an easy approach to molecular descriptor calculations. Match 56:237–248
Alvadesc (2019) https://www.alvascience.com/alvadesc/
Khan PM, Rasulev B, Roy K (2018) QSPR modeling of the refractive index for diverse polymers using 2D descriptors. ACS Omega 3:13374–13386
Rasulev B, Jabeen F, Stafslien S, Chisholm BJ, Bahr J, Ossowski M, Boudjouk P (2017) Polymer coating materials and their fouling release activity: a cheminformatics approach to predict properties. ACS Appl Mater Interfaces 9:1781–1792
Khan PM, Roy K (2018) Current approaches for choosing feature selection and learning algorithms in quantitative structure activity relationships (QSAR). Expert Opin Drug Discov 13:1075–1089
Roy K, Kar S (2016) In silico models for ecotoxicity of pharmaceuticals. In: In silico methods for predicting drug toxicity. Springer, NY, pp 237–304
Halling-Sørensen B, Nielsen SN, Lanzky PF, Ingerslev F, Lützhøft HCH, Jørgensen SE (1998) Occurrence, fate and effects of pharmaceutical substances in the environment-a review. Chemosphere 36:357–393
Białk-Bielińska A, Caban M, Pieczyńska A, Stepnowski P, Stolte S (2017) Mixture toxicity of six sulfonamides and their two transformation products to green algae Scenedesmus vacuolatus and duckweed Lemna minor. Chemosphere 173:542–550
Zou X, Zhou X, Lin Z, Deng Z, Yin D (2013) A docking-based receptor library of antibiotics and its novel application in predicting chronic mixture toxicity for environmental risk assessment. Environ Monit Assess 185:4513–4527
Zou X, Lin Z, Deng Z, Yin D, Zhang Y (2012) The joint effects of sulfonamides and their potentiator on Photobacterium phosphoreum: differences between the acute and chronic mixture toxicity mechanisms. Chemosphere 86:30–35
Long X, Wang D, Lin Z, Qin M, Song C, Liu Y (2016) The mixture toxicity of environmental contaminants containing sulfonamides and other antibiotics in Escherichia coli: differences in both the special target proteins of individual chemicals and their effective combined concentration. Chemosphere 158:193–203
Wang D, Shi J, Xiong Y, Hu J, Lin Z, Qiu Y, Cheng J (2018) A QSAR-based mechanistic study on the combined toxicity of antibiotics and quorum sensing inhibitors against Escherichia coli. J Hazard Mater 341:438–447
Wang D, Wu X, Lin Z, Ding Y (2018) A comparative study on the binary and ternary mixture toxicity of antibiotics towards three bacteria based on QSAR investigation. Environ Res 162:127–134
Cleuvers M (2004) Mixture toxicity of the anti-inflammatory drugs diclofenac, ibuprofen, naproxen, and acetylsalicylic acid. Ecotoxicol Environ Saf 59:309–315
Verhaar HJM, Van Leeuwen CJ, Hermens JLM (1992) Classifying environmental pollutants. Chemosphere 25:471–491
Van Leeuwen CJ, Van Der Zandt PTJ, Aldenberg T, Verhaar HJM, Hermens JLM (1992) Application of QSARs, extrapolation and equilibrium partitioning in aquatic effects assessment. I. Narcotic industrial pollutants. Environ Toxicol Chem 11:267–282
Escher BI, Bramaz N, Richter M, Lienert J (2006) Comparative ecotoxicological hazard assessment of beta-blockers and their human metabolites using a mode-of-action-based test battery and a QSAR approach. Environ Sci Technol 40:7402–7408
Lienert J, Güdel K, Escher BI (2007) Screening method for ecotoxicological hazard assessment of 42 pharmaceuticals considering human metabolism and excretory routes. Environ Sci Technol 41:4471–4478
De GarcÃa SAO, Pinto GP, GarcÃa-Encina PA, Irusta-Mata R (2014) Ecotoxicity and environmental risk assessment of pharmaceuticals and personal care products in aquatic environments and wastewater treatment plants. Ecotoxicology 23:1517–1533
Mahmoud WMM, Toolaram AP, Menz J, Leder C, Schneider M, Kümmerer K (2014) Identification of phototransformation products of thalidomide and mixture toxicity assessment: an experimental and quantitative structural activity relationships (QSAR) approach. Water Res 49:11–22
Villa S, Vighi M, Finizio A (2014) Experimental and predicted acute toxicity of antibacterial compounds and their mixtures using the luminescent bacterium Vibrio fischeri. Chemosphere 108:239–244
Hernández AF, Parrón T, Tsatsakis AM, Requena M, Alarcón R, Olga López O (2013) Toxic effects of pesticide mixtures at a molecular level: their relevance to human health. Toxicology 307:136–145
Tsatsakis AM, Zafiropoulos A, Tzatzarakis MN, Tzanakakis GN, Kafatos A (2009) Relation of PON1 and CYP1A1 genetic polymorphisms to clinical findings in a cross-sectional study of a Greek rural population professionally exposed to pesticides. Toxicol Lett 186:66–72
Zeliger H (2011) Human toxicology of chemical mixtures. William Andrew, NY
Arnold SF, Klotz DM, Collins BM, Vonier PM, Guillette LJ, McLachlan JA (1996) Synergistic activation of estrogen receptor with combinations of environmental chemicals. Science 272:1489–1492
Liu S-S, Song X-Q, Liu H-L, Zhang Y-H, Zhang J (2009) Combined photobacterium toxicity of herbicide mixtures containing one insecticide. Chemosphere 75:381–388
Gutowski L, Baginska E, Olsson O, Leder C, Kümmerer K (2015) Assessing the environmental fate of S-metolachlor, its commercial product Mercantor Gold® and their photoproducts using a water-sediment test and in silico methods. Chemosphere 138:847–855
Jansen E, Michels M, Van Til M, Doelman P (1994) Effects of heavy metals in soil on microbial diversity and activity as shown by the sensitivity-resistance index, an ecologically relevant parameter. Biol Fertil Soils 17:177–184
Nweke CO, Umeh SI, Ohale VK (2018) Toxicity of four metals and their mixtures to Pseudomonas fluorescens: an assessment using fixed ratio ray design. Ecotox Environ Contam Toxicol 13:1–14
Gikas P (2008) Single and combined effects of nickel (Ni (II)) and cobalt (Co (II)) ions on activated sludge and on other aerobic microorganisms: a review. J Hazard Mater 159:187–203
Su L-m, Xing Y, Mu C-f, Yan J-c, Zhao Y-h (2008) Evaluation and QSAR study of joint toxicity of substituted phenols and cadmium to Photobacterium phosphoreum. Chem Res Chinese U 24:281–284
Su L, Zhang X, Yuan X, Zhao Y, Zhang D, Qin W (2012) Evaluation of joint toxicity of nitroaromatic compounds and copper to Photobacterium phosphoreum and QSAR analysis. J Hazard Mater 241:450–455
Aggerbeck M, Blanc EB (2018) Role of mixtures of organic pollutants in the development of metabolic disorders via the activation of xenosensors. Curr Opin Toxicol 8:57–65
Lu GH, Wang C, Wang PF, Chen ZY (2009) Joint toxicity evaluation and QSAR modeling of aromatic amines and phenols to bacteria. Bull Environ Contam Toxicol 83:8–14
Zeng M, Lin Z, Yin D, Yin K (2008) QSAR for predicting joint toxicity of halogenated benzenes to Dicrateria zhanjiangensis. Bull Environ Contam Toxicol 81:525–530
Wang B, Yu G, Zhang Z, Hu H, Wang L (2006) Quantitative structure-activity relationship and prediction of mixture toxicity of alkanols. Chin Sci Bull 51:2717–2723
Chen CY, Chen SL, Christensen ER (2005) Individual and combined toxicity of nitriles and aldehydes to Raphidocelis subcapitata. Environ Toxicol Chem 24:1067–1073
Lin Z, Niu X, Wu C, Yin K, Cai Z (2005) Prediction of the toxicological joint effects between cyanogenic toxicants and aldehydes to Photobacterium phosphoreum. QSAR Comb Sci 24:354–363
Huang H, Wang X, Shao Y, Chen D, Dai X, Wang L (2003) QSAR for prediction of joint toxicity of substituted phenols to tadpoles (Rana japonica). Bull Environ Contam Toxicol 71:1124–1130
Altenburger R, Schmitt H, Schüürmann G (2005) Algal toxicity of nitrobenzenes: combined effect analysis as a pharmacological probe for similar modes of interaction. Environ Toxic Chem An Inter J 24:324–333
Pohl HR, Ruiz P, Scinicariello F, Mumtaz MM (2012) Joint toxicity of alkoxyethanol mixtures: contribution of in silico applications. Regul Toxicol Pharmacol 64:134–142
Jin H, Wang C, Shi J, Chen L (2014) Evaluation on joint toxicity of chlorinated anilines and cadmium to Photobacterium phosphoreum and QSAR analysis. J Hazard Mater 279:156–162
Swartz RC, Schults DW, Ozretich RJ, Lamberson JO, Cole FA, Ferraro SP, Dewitt TH, Redmond MS (1995) ΣPAH: a model to predict the toxicity of polynuclear aromatic hydrocarbon mixtures in field-collected sediments. Environ Toxicol Chem 14:1977–1987
Choi K, Sweet LI, Meier PG, Kim P-G (2004) Aquatic toxicity of four alkylphenols (3-tert-butylphenol, 2-isopropylphenol, 3-isopropylphenol, and 4-isopropylphenol) and their binary mixtures to microbes, invertebrates, and fish. Environ Toxicol 19:45–50
Wang T, Lin Z, Yin D, Tian D, Zhang Y, Kong D (2011) Hydrophobicity-dependent QSARs to predict the toxicity of perfluorinated carboxylic acids and their mixtures. Environ Toxicol Pharmacol 32:259–265
Hoover G, Kar S, Guffey S, Leszczynski J, Sepúlveda MS (2019) In vitro and in silico modeling of perfluoroalkyl substances mixture toxicity in an amphibian fibroblast cell line. Chemosphere 233:25–33
Kar S, Ghosh S, Leszczynski J (2018) Single or mixture halogenated chemicals? Risk assessment and developmental toxicity prediction on zebrafish embryos based on weighted descriptors approach. Chemosphere 210:588–596
Bucher JR, Lucier G (1998) Current approaches toward chemical mixture studies at the National Institute of Environmental Health Sciences and the US National Toxicology Program. Environ Health Perspect 106:1295–1298
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Khan, P.M., Kar, S., Roy, K. (2020). Ecotoxicological QSARs of Mixtures. In: Roy, K. (eds) Ecotoxicological QSARs. Methods in Pharmacology and Toxicology. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-0150-1_19
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