کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4411941 1307615 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Can site-specific heuristic toxicity models predict the toxicity of produced water?
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Can site-specific heuristic toxicity models predict the toxicity of produced water?
چکیده انگلیسی

An empirically derived model of major ion toxicity was combined with other toxicity assessments to account for the observed toxicity in field-collected produced water and produced water contaminated groundwater. The accuracy and precision of the ion toxicity model, calculated using model deviation ratios (MDR) and simple linear regressions, was determined for fathead minnows, Ceriodaphnia dubia, and Daphnia magna. Model accuracy for produced water fell within a factor of two for all three organisms. The precision, or variability explained by the model, was 47.9%, 56.1%, and 0.00% for fathead minnows, C. dubia, and D. magna, respectively. Incorporating other measured potential toxicants improved predictive precision for fathead minnows to 67.0% using ion toxicity and pH and to 30.9% for D. magna using ion toxicity, pH, and total ammonia. The observed toxicity to Daphnia pulex was also evaluated using D. magna model predictions and other measured parameters, but no consistent relationship was found. Dissimilar results were found for produced water contaminated groundwaters with model predictions for D. magna falling within a factor of two of and explaining 53.8% of the observed variability in D. pulex responses. These results indicate that predicted major ion toxicity, combined with other measured parameters, can accurately and precisely account for observed responses in test organisms to field-collected samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 80, Issue 5, July 2010, Pages 542–547
نویسندگان
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