PMID- 25434270 OWN - NLM STAT- MEDLINE DCOM- 20150924 LR - 20181202 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 124 DP - 2015 Apr TI - Aquatic hazard assessment of a commercial sample of naphthenic acids. PG - 1-9 LID - S0045-6535(14)01237-5 [pii] LID - 10.1016/j.chemosphere.2014.10.052 [doi] AB - This paper presents chemical composition and aquatic toxicity characteristics of a commercial sample of naphthenic acids (NAs). Naphthenic acids are derived from the refining of petroleum middle distillates and can contribute to refinery effluent toxicity. NAs are also present in oil sands process-affected water (OSPW), but differences in the NAs compositions from these sources precludes using a common aquatic toxicity dataset to represent the aquatic hazards of NAs from both origins. Our chemical characterization of a commercial sample of NAs showed it to contain in order of abundance, 1-ring>2-ring>acyclic>3-ring acids ( approximately 84%). Also present were monoaromatic acids (7%) and non-acids (9%, polyaromatic hydrocarbons and sulfur heterocyclic compounds). While the acyclic acids were only the third most abundant group, the five most abundant individual compounds were identified as C(10-14) n-acids (n-decanoic acid to n-tetradecanoic acid). Aquatic toxicity testing of fish (Pimephales promelas), invertebrate (Daphnia magna), algae (Pseudokirchneriella subcapitata), and bacteria (Vibrio fischeri) showed P. promelas to be the most sensitive species with 96-h LL50=9.0 mg L(-1) (LC50=5.6 mg L(-1)). Acute EL50 values for the other species ranged 24-46 mg L(-1) (EC50 values ranged 20-30 mg L(-1)). Biomimetic extraction via solid-phase-microextraction (BE-SPME) suggested a nonpolar narcosis mode of toxic action for D. magna, P. subcapitata, and V. fischeri. The BE analysis under-predicted fish toxicity, which indicates that a specific mode of action, besides narcosis, may be a factor for fishes. CI - Copyright (c) 2014 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Swigert, James P AU - Swigert JP AD - EcoTox Assessments, 506 Tenant Circle, Saint Michaels, MD 21663, USA. Electronic address: jswigert@atlanticbb.net. FAU - Lee, Carol AU - Lee C AD - ExxonMobil Biomedical Sciences, 1545 Route 22 East, Annandale, NJ 08801, USA. FAU - Wong, Diana C L AU - Wong DC AD - Shell Health Americas, One Shell Plaza, 910 Louisiana St, Houston, TX 77002, USA. FAU - White, Russell AU - White R AD - American Petroleum Institute, 1220 L Street NW, Washington, DC 20005, USA. FAU - Scarlett, Alan G AU - Scarlett AG AD - Biogeochemistry Research Centre, Plymouth University, Drake Circus, Plymouth PL4 8AA, UK. FAU - West, Charles E AU - West CE AD - Biogeochemistry Research Centre, Plymouth University, Drake Circus, Plymouth PL4 8AA, UK. FAU - Rowland, Steven J AU - Rowland SJ AD - Biogeochemistry Research Centre, Plymouth University, Drake Circus, Plymouth PL4 8AA, UK. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141127 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Carboxylic Acids) RN - 0 (Water Pollutants, Chemical) RN - YNM5U6B7A4 (naphthenic acid) SB - IM MH - Aliivibrio fischeri/*drug effects MH - Animals MH - Carboxylic Acids/*toxicity MH - Chlorophyta/*drug effects MH - Cyprinidae/*physiology MH - Daphnia/*drug effects MH - Water Pollutants, Chemical/*toxicity OTO - NOTNLM OT - Aquatic toxicity OT - Biomimetic extraction OT - GCxGC-MS OT - Naphthenic acids EDAT- 2014/12/02 06:00 MHDA- 2015/09/25 06:00 CRDT- 2014/12/02 06:00 PHST- 2014/03/14 00:00 [received] PHST- 2014/10/06 00:00 [revised] PHST- 2014/10/26 00:00 [accepted] PHST- 2014/12/02 06:00 [entrez] PHST- 2014/12/02 06:00 [pubmed] PHST- 2015/09/25 06:00 [medline] AID - S0045-6535(14)01237-5 [pii] AID - 10.1016/j.chemosphere.2014.10.052 [doi] PST - ppublish SO - Chemosphere. 2015 Apr;124:1-9. doi: 10.1016/j.chemosphere.2014.10.052. Epub 2014 Nov 27.