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Development And Evaluation Of Analytical Procedures For Broad Spectrum Analysis Of Synthetic Organic Chemicals In Source And Finished Drinking Waters
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Book Synopsis Development and Evaluation of Analytical Procedures for Broad Spectrum Analysis of Synthetic Organic Chemicals in Source and Finished Drinking Waters by : Gregory S. Durell
Download or read book Development and Evaluation of Analytical Procedures for Broad Spectrum Analysis of Synthetic Organic Chemicals in Source and Finished Drinking Waters written by Gregory S. Durell and published by . This book was released on 1987 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1988 with total page 1198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1988 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Non-targeted Analysis for Discovery of Chemicals of Emerging Concerns in Treated Water for Drinking and Source Investigation by :
Download or read book Non-targeted Analysis for Discovery of Chemicals of Emerging Concerns in Treated Water for Drinking and Source Investigation written by and published by . This book was released on 2018 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study is part of an inter-laboratory collaborating project led by the Environmental Protection Agency (EPA). The EPA provided water samples collected from a river, effluent of wastewater treatment plant (WWTP) and water treatment plant (WTP) in northeastern United States that uses chlorine disinfection. Non-targeted analysis was utilized to screen for a wide range of chemicals. The samples were prepared by solid-phase extraction (SPE) using Oasis HLB and analyzed by comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC×GC/TOF-MS) in nontargeted analytical manner. By using non-targeted analysis, chemicals not targeted can be screened, while a targeted analysis analyzes known chemicals in a sample leaving unknown chemicals undetected. In this study, true detection of a chemical was determined by meeting the following criteria: it must be found only in the sample, must not be found in any field blank sample, and must have a mass spectral similarity score of 500 (50%) or above using the NIST mass spectral library. Data analysis was done by using the instrument software, ChromaTOF, and its add-in feature, “Statistical Compare”. After the automatic data analysis, manual review followed. In total, 382 unique compounds were identified from all six sample locations collected. After manual review, 135 compounds showed high similarity with the NIST mass spectra, and 247 were deemed as low identified compounds. In the wastewater effluent, a majority of the compounds were ingredients of pharmaceutical and personal care products (PPCPs) and flavoring/food additives. In the treated drinking water, 6 disinfection byproducts (DBPs) were detected and not detected in the feed water to the drinking water facility, but produced after treatment. Possible sources of the trace chemicals were discussed. Of all the chemicals tentatively identified, only two from the treated drinking water sample, tribromoacetic acid and dibromochloromethane are regulated in drinking water. This study confirms previous findings that PPCPs and DBPs continue to be pollutants of source waters. Also, the results indicate that non-target analysis was useful to evaluate the efficiency of wastewater and drinking water processes. Further study requires confirmation of the tentatively identified compound, quantification of the compounds for risk assessment and source investigation. The CD-ROM, an appendix to this thesis, is available for viewing at the Media Center in the SDSU Library.
Download or read book Report written by and published by . This book was released on 1967 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federal Register written by and published by . This book was released on 1980-06-27 with total page 1192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Manual for the Certification of Laboratories Analyzing Drinking Water by :
Download or read book Manual for the Certification of Laboratories Analyzing Drinking Water written by and published by . This book was released on 1997 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Organic Compounds in Natural Waters by : T Roy Crompton
Download or read book Organic Compounds in Natural Waters written by T Roy Crompton and published by CRC Press. This book was released on 2013-09-23 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The potential health hazards that might arise from the presence of organic substances in water are a matter of increasing concern to the water industry, environmentalists and the general public alike. This comprehensive reference draws together and systematises the vast body of information available on the occurrence and determination of organic substances in natural waters. Organic Compounds in Natural Waters provides a comprehensive description of organic substances in waters. Methods are provided in broad outline, with guidance on their applicability, their comparative advantages and disadvantages, possible interferences, sensitivity and detection levels. The book is an essential reference for analytical chemists working in industry, water utilities, government, non government organisations and regulatory agencies and environmental/analytical consultants.
Book Synopsis Analytical Method Development for Measurement of Unregulated Organic Contaminants in Aqueous Samples Using Liquid Chromatography - Tandem Mass Spectrometry by : Min Yoon
Download or read book Analytical Method Development for Measurement of Unregulated Organic Contaminants in Aqueous Samples Using Liquid Chromatography - Tandem Mass Spectrometry written by Min Yoon and published by . This book was released on 2010 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic wastewater contaminants (OWCs) such as pharmaceuticals, hormones, and perfluorinated compounds (PFCs) are of growing environmental and public health concern. These OWCs were found in U.S. drinking water supplies according to nationwide studies by the U.S. Geological Survey. Many OWCs are not, however, regulated or routinely monitored in drinking water. The objective of this dissertation was to develop and optimize analytical methods for trace analysis of unregulated organic contaminants in drinking water sources. Furthermore, household water treatment-processes were studied to measure the efficacy of removal of these unregulated organic contaminants from drinking water samples. Two liquid chromatography-ion trap mass spectrometry systems (LC-IT-MS/MS) were compared for rapid, reliable and sensitive detection of the most abundant PFCs, perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS). An ultra performance LC-linear IT-MS/MS achieved the lowest detection limits measured, 0.03pg and 0.24pg for PFOA and PFOS respectively, which were approximately two orders of magnitude more sensitive than an LC-IT-MS/MS. With the increased sensitivity, the direct analysis of PFOA/S without solid phase extraction pre-concentration steps was also demonstrated. In addition, MS methods using Full Scan, Single Ion Monitoring, and MS/MS were compared and optimized for a sensitive analysis of PFCs. A novel rapid method was created by switching polarity for the simultaneous analysis of twenty unregulated compounds, including pharmaceuticals. Sensitive method detection limits were achieved in the range of sub ng/L to hundreds ng/L for all target compounds. An optimized analytical method was applied to quantify low ng/L levels of these target compounds in field water samples from regions throughout New Jersey. Eight target compounds were measured below 1℗æg/L and two target compounds (i.e. metformin and estradiol) were measured slightly above 1æg/L in the field water samples. Finally, granular activated carbon (GAC) and ion resin (Brita[trademark symbol]) filtration, ozonation, and microwave heating were tested for efficacy at removing 20 target compounds in drinking water samples. The GAC/ion resin mechanism with adsorption properties demonstrated greater removal of the target compounds than the other two mechanisms. Even this water treatment-process only partially removed these target compounds with its mean removal of [less than or equal to symbol] 66%.
Book Synopsis Checklist of Official North Carolina State Publications by :
Download or read book Checklist of Official North Carolina State Publications written by and published by . This book was released on 1987 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book STATE PUBLICATIONS written by and published by . This book was released on 1988 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methods for the Determination of Organic Compounds in Drinking Water by :
Download or read book Methods for the Determination of Organic Compounds in Drinking Water written by and published by . This book was released on 1990 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Checklist of State Publications by : Library of Congress. Exchange and Gift Division
Download or read book Monthly Checklist of State Publications written by Library of Congress. Exchange and Gift Division and published by . This book was released on 1988 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1988 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Book Synopsis Guidelines for Drinking-water Quality by : World Health Organization
Download or read book Guidelines for Drinking-water Quality written by World Health Organization and published by World Health Organization. This book was released on 1993 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume describes the methods used in the surveillance of drinking water quality in the light of the special problems of small-community supplies, particularly in developing countries, and outlines the strategies necessary to ensure that surveillance is effective.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1988-04 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Determination of Organic Compounds in Natural and Treated Waters by : T R Crompton
Download or read book Determination of Organic Compounds in Natural and Treated Waters written by T R Crompton and published by CRC Press. This book was released on 1999-10-14 with total page 929 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive reference which draws together and systematises the information available on the occurrence and determination of organic substances in all types of non-saline and saline natural and treated waters. It provides a comprehensive description of organic compounds in all natural and treated water types. The book includes a series of table
