1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 1 Research paper 1 Submitted to: Science of the Total Environment 2 3 Effect of pH and ionic strength on exposure and toxicity of encapsulated 4 lambda-cyhalothrin to Daphnia magna 5 6 Jino Son 1 , Louisa A. Hooven 2 , Bryan Harper 1 , Stacey L. Harper 1, 3* 7 8 1 Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, 9 Oregon, United States 10 2 Department of Horticulture, Oregon State University, Corvallis, Oregon, United States 11 3 School of Chemical, Biological and Environmental Engineering, Oregon State University, 12 Corvallis, Oregon, United States 13 * Corresponding author. Email address: Stacey.Harper@oregonstate.edu 14 © 2015. This manuscript version is made available under the Elsevier user license http://www.elsevier.com/open-access/userlicense/1.0/