methods used for chemical analysis of waters and sediments

Tài liệu METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER ppt

Ngày tải lên : 14/02/2014, 03:20

... ASTM Annual Book of Standards, Part 31, D3694-78 “Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents,” American Society for Testing and Materials, ... present, add 80 mg of sodium thiosulfate per liter of sample and mix well EPA Methods 330.4 and 330.5 may be used for measurement of residual chlorine.9 Field test kits are available for this purpose ... based upon measurements of actual retention time variations of standards over the course of a day Three times the standard deviation of a retention time for a compound can be used to calculate a...

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Tài liệu METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER doc

Ngày tải lên : 14/02/2014, 03:20

... secondary dilution standard be prepared at a concentration of 15 µg/mL of each internal standard compound The addition of 10 µL of this standard to 5.0 mL of sample or calibration standard would be ... detector This type of detector has proven effective in the analysis of wastewaters for the parameters listed in the scope (Section 1.1), and was used to develop the method performance statements ... the chemical analysis Additional references to laboratory safety are available and have been identified4,6 for the information of the analyst Apparatus and Materials 5.1 Sampling equipment, for...

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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER pot

Ngày tải lên : 05/03/2014, 21:20

... 51, and 86 101 103 96 61 and 98 63 65, 83, 85, 98, and 100 96 61 and 98 83 85 98 62, 64, and 100 97 99, 117, and 119 117 119 and 121 127 83, 85, and 129 112 63, 65, and 114 75 77 130 95, 97, and ... T.A and Lichtenberg, J.J “Semi-Automated Headspace Analysis of Drinking Waters and Industrial Waters for Purgeable Volatile Organic Compounds,” Measurement of Organic Pollutants in Water and ... derived in this report.) Methods 330.4 (Titrimetric, DPD-FAS) and 330.5 (Spectrophotometric, DPD) for Chlorine, Total Residual,” Methods for Chemical Analysis of Water and Wastes, EPA-600/4-79-020,...

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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER: METHOD 604—PHENOLS docx

Ngày tải lên : 05/03/2014, 21:20

... the analysis of wastewaters for derivatization products of the parameters listed in the scope (Section 1.1), and was used to develop the method performance statements in Section 14 Guidelines for ... present, add 80 mg of sodium thiosulfate per liter of sample and mix well EPA Methods 330.4 and 330.5 may be used for measurement of residual chlorine 10 Field test kits are available for this purpose ... a formal quality control program The minimum requirements of this program consist of an initial demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and...

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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER: METHOD 605—BENZIDINES pdf

Ngày tải lên : 14/03/2014, 20:20

... a formal quality control program The minimum requirements of this program consist of an initial demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and ... outside the range for accuracy, the system performance is unacceptable for that parameter Locate and correct the source of the problem and repeat the test for all parameters of interest beginning ... of 6.5 - 7.5 with sodium hydroxide solution or sulfuric acid 10.2 Add 100 mL of chloroform to the sample bottle, seal, and shake 30 seconds to rinse the inner surface (Caution: Handle chloroform...

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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER: METHOD 611—HALOETHERS potx

Ngày tải lên : 14/03/2014, 20:20

... present, add 80 mg of sodium thiosulfate per liter of sample and mix well EPA Methods 330.4 and 330.5 may be used for measurement of residual chlorine.10 Field test kits are available for this purpose ... outside the range for accuracy, the system performance is unacceptable for that parameter Locate and correct the source of the problem and repeat the test for all parameters of interest beginning ... a formal quality control program The minimum requirements of this program consist of an initial demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and...

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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER: METHOD 607—NITROSAMINES docx

Ngày tải lên : 22/03/2014, 14:20

... present, add 80 mg of sodium thiosulfate per liter of sample and mix well EPA Methods 330.4 and 330.5 may be used for measurement of residual chlorine.20 Field test kits are available for this purpose ... “Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents,” American Society for Testing and Materials, Philadelphia Buglass, A.J., Challis, B.C., and ... prepare for use, place 100 g of alumina into a 500 mL reagent bottle and add mL of reagent water Mix the alumina preparation thoroughly by shaking or rolling for 10 minutes and let it stand for at...

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METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER doc

Ngày tải lên : 28/03/2014, 19:20

... Area of the characteristic m/z for the parameter to be measured Ais = Area of the characteristic m/z for the internal standard Cis = Concentration of the internal standard Cs = Concentration of ... chloride for the serial extraction of the base/neutrals and 200 mL, 100 mL, and 100 mL volumes of methylene chloride for the acids 10.2 Mark the water meniscus on the side of the sample bottle for ... Standards, Part 31, D3694-78 “Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents,” American Society for Testing and Materials, Philadelphia “Carcinogens-Working...

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APPENDIX A TO PART 136 METHODS FOR ORGANIC CHEMICAL ANALYSIS OF MUNICIPAL AND INDUSTRIAL WASTEWATER ppt

Ngày tải lên : 28/03/2014, 20:20

... hygiene—Thorough washing of hands and forearms after each manipulation and before breaks (coffee, lunch, and shift) 4.3.1.4 Confinement—Isolated work area, posted with signs, segregated glassware and tools, ... The frequency for the required analysis of a QC check standard will depend upon the complexity of the sample matrix and the performance of the laboratory 8.4.1 Prepare the QC check standard by adding ... a formal quality control program The minimum requirements of this program consist of an initial demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and...

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Development of methods to improve sensitivity and portability of capillary electrophoresis for the analysis of stabilizers and drugs 1

Ngày tải lên : 14/09/2015, 10:36

... electrophoresis system as in the previous chapter, and potentially can be used for field analysis of chiral compounds In addition, a fast method for the analysis of underivertized carnitine was developed ... before sample injection to reduce the length of the concentrated sample zone and increase the peak height by slowing down the forward movement of the neutral sample associated with β-CD-NH2 and ... studies of many groups of compounds The improvement of sensitivity and the miniaturization of CE technique are two major trends of capillary electrophoresis which have gain more and more attention...

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Development of methods to improve sensitivity and portability of capillary electrophoresis for the analysis of stabilizers and drugs 2

Ngày tải lên : 14/09/2015, 10:37

... responsible for the electroosmosis and is designated as the ζ–potential Figure 1.1: Charge distribution at the surface of fused silica and formation of the ζ–potential Figure 1.2: Profile of the ζ–potential ... presents one of the simplest and most effective means of influencing the EOF of the separation system Normally the EOF increases with decreasing buffer concentration and enables analysis of highly ... reversal of the field, separation of slowly and rapidly migrating inorganic anions can be achieved in a single analysis 12 Figure 1.6 Illustration of double layer and reversal of EOF by addition of...

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CHEMICAL ANALYSIS OF WATER AND WASTEWATER

Ngày tải lên : 23/07/2013, 20:57

... knowledge of the identities and quantities of pollutants and other chemical species in water, air, soil, and biological systems Therefore, proven, state -of- the-art techniques of chemical analysis, ... membrane of some kind that allows for selective exchange of the sought -for ion The glass electrode used for the measurement of hydrogen-ion activity and pH is the oldest and most widely used ion-selective ... Fred P., Methods Manual for Chemical Analysis of Water and Wastes, Alberta Environmental Centre, Vergeville, Alberta, Canada (1996) Garbarino, John R and Tedmund M Struzeski, Methods Of Analysis...

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Designation: C 471M – 96 METRIC - Chemical Analysis of Gypsum and Gypsum Products [Metric]1 ppsx

Ngày tải lên : 10/07/2014, 23:20

... 100 (7) where: X % of sand in sanded plaster, A % of insoluble matter in the sand, B % of insoluble matter in the gypsum neat plaster, and C % of insoluble matter in the sanded plaster 35.5 To ... silicon dioxide and other acid insoluble matter 10.2 Signiﬁcance and Use—The silicon dioxide and other acid insoluble matter analysis determines and is used to report the percentage of one of the inert ... G weight of dried crucible and contents (19.4) or weight of weighing bottle and contents (20.2), and H weight of crucible plus diatomaceous silica used as ﬁlter aid (19.4), or weight of weighing...

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direct methods for stability analysis of electric power systems theoretical foundation, bcu methodologies, and applications

Ngày tải lên : 30/05/2014, 23:38

... form of error and warning messages and various options to tabulate operating conditions and dynamic data 2.6 APPROACHES FOR STABILITY ANALYSIS The complete model for the stability analysis of a ... UEPs for a group of coherent contingencies and to the development of effective preventive control actions against a set of insecure contingencies and enhancement control actions for a set of critical ... 2:20:04 PM Direct Methods for Stability Analysis of Electric Power Systems ffirs.indd i 9/24/2010 2:20:04 PM ffirs.indd ii 9/24/2010 2:20:04 PM Direct Methods for Stability Analysis of Electric Power...

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Báo cáo y học: "Statistical methods and software for the analysis of highthroughput reverse genetic assays using flow cytometry readouts" pps

Ngày tải lên : 14/08/2014, 17:22

... cleaning up of the data, removal of systematic biases and drifts (a process often referred to as 'normalization'), and transformation to a format and scale that is suitable for the following analysis ... technical aspects of data import and management, and refer the interested reader to the documentation of the software package prada for a thorough discussion of these [19] Selection of well measured ... by the forward light scatter, α and β are the coefficients of the model, and xspecific is the specific fluorescence We compute α and β by robust fit of a linear regression of xtotal on s, and obtain...

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A discourse analysis of english and vietnamese advertisements for beauty care products

Ngày tải lên : 26/11/2013, 13:26

... similarities and differences of these features between the two languages and help Vietnamese learners of English understand and grasp the language characteristics of English advertisements for beauty ... there has been almost (Methods and Procedure), Chapter (Discussion and Findings) and Chapter (Conclusions and Implications) no research on discourse analysis of advertisements for beauty care products ... method and comparative and contrastive methods are the dominant ones frequently used in the thesis 3.3 Description of Samples 200 samples of advertisements for beauty care products in the field of...

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Incentives of Retirement Transition for Elderly Workers: An Analysis of Actual and Simulated Replacement Rates in Ireland ppt

Ngày tải lên : 05/03/2014, 18:20

... what type of data is used, the methods can be grouped into three categories: synthetic analysis, empirical data based analysis, and simulated data based analysis A discussion of the usage of each ... some of the details of the simulation model used in the tax-benefit calculation and is followed by a description of the data in section The results of the analysis are presented in sections 6, and ... Incentives of Retirement Transition for Elderly Workers: An Analysis of Actual and Simulated Replacement Rates in Ireland Retirement behaviours and elderly poverty issues have been the subject of much...

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Báo cáo khoa học: "A System for Semantic Analysis of Chemical Compound Names" pdf

Ngày tải lên : 08/03/2014, 01:20

... defined by its set of vertices and its set of edges Therefore, the domain of a graph consists of a set of possible vertices, in our case for the atoms, and possible edges, in our case for the bonds ... SMILES Algorithm for 43 Generation of Unique SMILES Notation Journal of Chemical Information and Computer Science, 29(2):97–101 David Weininger 1988 SMILES, a chemical language and information system ... crucial role in classification of chemical compounds For example, hydroxy, used as a prefix of a name, specifies the presence of an OH-group (consisting of an oxygen atom and a hydrogen atom) A molecular...

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The Report of the Task Force on Financial Mechanisms for ICT for Development - A review of trends and an analysis of gaps and promising practices ppt

Ngày tải lên : 15/03/2014, 19:20

... development of Rwanda towards an information and knowledge based economy The emerging information revolution offers Rwanda a window of opportunity to leap-frog the stage of industrialisation and transform ... goals for expanding financial resources available for ICT development, therefore, not necessarily amount to a trade-off with financing for more direct and urgent forms of support, such as for food, ... Force’s best understanding of the broad and constantly changing scope of the ICT sector and the use of ICT in the developing world from a financing and development perspective In the report of...

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nmr methods for the investigation of structure and transport

Ngày tải lên : 29/05/2014, 18:32

... organized the continuation of the research unit after the DFG funding as well as Prof Kasper, Prof Kind, Prof Nirschl, and Prof Elsner Prof Nirschl, Prof Kind, Prof Wilhelm, and Prof Elsner contributed ... convey the use and advantages of NMR to the engineering community First of all, NMR is a complicated business There are standard experiments only for some routine chemical analysis and medical imaging ... sensitivity and information content in NMR spectra Molecular biology and medicine were revolutionized by the advent of multidimensional NMR spectroscopy and NMR imaging Apart from chemical analysis and...

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