Item talk:Q73251
From geokb
{
"USGS Publications Warehouse": { "schema": { "@context": "https://schema.org", "@type": "CreativeWork", "additionalType": "USGS Numbered Series", "name": "The search for reliable aqueous solubility (Sw) and octanol-water partition coefficient (Kow) data for hydrophobic organic compounds; DDT and DDE as a case study", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "wri014201", "url": "https://pubs.usgs.gov/publication/wri014201" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 30976 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.3133/wri014201", "url": "https://doi.org/10.3133/wri014201" } ], "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Water-Resources Investigations Report" } ], "datePublished": "2001", "dateModified": "2020-03-22", "abstract": "The accurate determination of an organic contaminant\u2019s physico-chemical properties is essential for predicting its environmental impact and fate. Approximately 700 publications (1944\u20132001) were reviewed and all known aqueous solubilities (Sw) and octanol-water partition coefficients (Kow) for the organochlorine pesticide, DDT, and its persistent metabolite, DDE were compiled and examined. Two problems are evident with the available database: 1) egregious errors in reporting data and references, and 2) poor data quality and/or inadequate documentation of procedures. The published literature (particularly the collative literature such as compilation articles and handbooks) is characterized by a preponderance of unnecessary data duplication. Numerous data and citation errors are also present in the literature. The percentage of original Sw\u00a0and Kow\u00a0data in compilations has decreased with time, and in the most recent publications (1994\u201397) it composes only 6\u201326 percent of the reported data. The variability of original DDT/DDE Sw\u00a0and Kow\u00a0data spans 2\u20134 orders of magnitude, and there is little indication that the uncertainty in these properties has declined over the last 5 decades. A criteria-based evaluation of DDT/DDE Sw\u00a0and Kow\u00a0data sources shows that 95\u2013100 percent of the database literature is of poor or unevaluatable quality. The accuracy and reliability of the vast majority of the data are unknown due to inadequate documentation of the methods of determination used by the authors. [For example, estimates of precision have been reported for only 20 percent of experimental Sw\u00a0data and 10 percent of experimental Kow\u00a0data.] Computational methods for estimating these parameters have been increasingly substituted for direct or indirect experimental determination despite the fact that the data used for model development and validation may be of unknown reliability. Because of the prevalence of errors, the lack of methodological documentation, and unsatisfactory data quality, the reliability of the DDT/ DDE Sw\u00a0and Kow\u00a0database is questionable. The nature and extent of the errors documented in this study are probably indicative of a more general problem in the literature of hydrophobic organic compounds. Under these circumstances, estimation of critical environmental parameters on the basis of Sw\u00a0and Kow\u00a0(for example, bioconcentration factors, equilibrium partition coefficients) is inadvisable because it will likely lead to incorrect environmental risk assessments. The current state of the database indicates that much greater efforts are needed to: 1) halt the proliferation of erroneous data and references, 2) initiate a coordinated program to develop improved methods of property determination, 3) establish and maintain consistent reporting requirements for physico-chemical property data, and 4) create a mechanism for archiving reliable data for widespread use in the scientific/regulatory community.", "description": "51 p. ", "publisher": { "@type": "Organization", "name": "U.S. Geological Survey" }, "author": [ { "@type": "Person", "name": "Pontolillo, James jpontoli@usgs.gov", "givenName": "James", "familyName": "Pontolillo", "email": "jpontoli@usgs.gov", "affiliation": [ { "@type": "Organization", "name": "National Research Program - Eastern Branch", "url": "https://www.usgs.gov/centers/arizona-water-science-center" } ] }, { "@type": "Person", "name": "Eganhouse, R.P.", "givenName": "R.P.", "familyName": "Eganhouse" } ], "funder": [ { "@type": "Organization", "name": "Toxic Substances Hydrology Program", "url": null } ] } }, "OpenAlex": { "abstract_inverted_index": { "The": [ 0, 75, 108, 138, 194, 303, 363 ], "accurate": [ 1 ], "determination": [ 2, 215, 258 ], "of": [ 3, 73, 93, 110, 134, 140, 150, 173, 184, 189, 198, 202, 211, 214, 223, 232, 239, 273, 277, 280, 284, 293, 307, 317, 325, 333, 340, 366, 381, 395 ], "an": [ 4 ], "organic": [ 5, 327 ], "contaminant's": [ 6 ], "physico-chemical": [ 7, 406 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