Applications of Environmental Chemistry: A Practical Guide for Environmental Professionals - Chpater 5 ppsx
Applications of Environmental Chemistry: A Practical Guide for Environmental Professionals - Chpater 1 pps
... WaterSoil CO 2 3 .5 Acidity and AlkalinityBackgroundAcidityAlkalinityImportance of AlkalinityCriteria and Standards for AlkalinityCalculating Alkalinity Calculating Changes in Alkalinity, ... establishing a final regulation. An example of such a regulation may be a numerical standard for a chemicalnot previously regulated, a revised standard for a chemical already regulated, or a new procedure for ... state has tables of waterquality standards for each classified water body. In addition to standards for environmental waters,there are standards for treated drinking water as delivered from a water...
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Applications of Environmental Chemistry: A Practical Guide for Environmental Professionals - Chpater 2 docx
... (electronegativity of C = 2 .5; electronegativity of H = 2.1) all alkanes are nonpolarbecause of their bond geometry. In the straight-chain alkanes (called normal-alkanes),as the alkane carbon chain becomes ... also affects polarizability. Elongated molecules are more polarizable than compact molecules.Thus, a linear alkane is more polarizable than a branched alkane of the same molecular weight.All atoms ... distorted.Therefore, large atoms and molecules are more polarizable than small ones. Since atomic andmolecular sizes are closely related to atomic and molecular weights, we can generalize that polar-izability...
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Applications of Environmental Chemistry: A Practical Guide for Environmental Professionals - Chpater 3 ppsx
... AlkalinityImportance of AlkalinityCriteria and Standards for AlkalinityCalculating Alkalinity Calculating Changes in Alkalinity, Carbonate, and pH 3.6 HardnessBackgroundCalculating HardnessImportance ... productivewaterfowl habitats correlate with increased alkalinity above 25 mg/L as CaCO3.CRITERIA AND STANDARDS FOR ALKALINITYNaturally occurring levels of alkalinity reaching at least 400 mg/L as CaCO3 ... HARDNESSBACKGROUNDOriginally, water hardness was a measure of the ability of water to precipitate soap. It was measuredby the amount of soap needed for adequate lathering and served also as...
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Applications of Environmental Chemistry: A Practical Guide for Environmental Professionals - Chpater 5 ppsx
... Gravity pulls water downward.2. Water pressure in the aquifer acts upward against gravity.3. Capillary forces at the interface between the saturated and unsaturated zones also actupward against ... 3-ring aromatic hydrocarbons. Using calibration standards for the water-soluble fractionsimproves the accuracy of identifying water sample contaminants.L1 354 /ch 05/ Frame Page 133 Tuesday, April ... Federal Clean Water Act. One EPA estimate puts leaks from 2 to 7 millionunderground tanks as the source of 45% of all groundwater contamination, with 95% of the leaking L1 354 /ch 05/ Frame Page...
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Applications of Environmental Chemistry: A Practical Guide for Environmental Professionals - Chpater 6 pptx
... help assure that artifacts are recognizable and are notmistaken as real data.Trip Blanks: For each type of container and preservative, at least one container of analyte-freewater should travel ... LLCExample 6.2: Calculate the Chlorine Needed to Remove Ammonia A waste treatment plant handles 1 ,50 0,000 L/day of sewage that contains an average of 50 mg/L of NH3-N. How many grams of Cl2(aq) ... coolers, ice packs, clean sample containers with preser-vatives appropriate for requested analyses, container labels, and chain -of- custody forms and sealsas part of their analytical services.The...
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Applications of Environmental Chemistry: A Practical Guide for Environmental Professionals - Chpater 7 (end) pdf
... criteriadocuments: Arsenic (EPA 440/ 5- 8 4-0 33), Cadmium (EPA 440/ 5- 8 4-0 32), Chromium (EPA 440/ 5- 8 4-0 29), Copper (EPA 440/ 5- 8 4-0 31), Cyanide (EPA 440/ 5- 8 4- 028), Lead (EPA 440/ 5- 8 4-0 27), Nickel (EPA 440/ 5- 8 6-0 04), ... Endosulfan (EPA 440/ 5- 8 0-0 46), Endrin (EPA 440/ 5- 8 0-0 47), Heptachlor (440/ 5- 8 0-0 52 ), Hexachlo-rocyclohexane (EPA 440/ 5- 8 0-0 54 ), Silver (EPA 440/ 5- 8 0-0 71). The minimum data requirements and derivation ... load of manganese in anaverage adult is about 12 mg. Health problems in humans may arise from de cient and e xcessiveintakes of manganese. Thus, any quantitative risk assessment for manganese...
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A Practical Guide for Health Researchers - part 4 ppsx
... trial and for verification of data. There are two components to monitoring: data management (record keeping and data handling) and data quality (quality assurance and quality control).Record-keeping ... factors: the size of the sample, and the variations of measurements in the sample indicated by the standard deviation. For example, the standard error of a mean is calculated as the standard ... program can help during data entry to ensure that all data are entered. The computer program will flag missing and out -of- range values. Inaccurate and imprecise data are a worse problem than...
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A Practical Guide for Health Researchers - part 5 potx
... be analysed and interpreted, an often time consuming and demanding task. Analysis of qualitative data offers different challenges from quantitative data. The data often consist of a mass of ... choice of the statistical test to be used. For the purposes of data description, and statistical analysis, data are looked at as variables. Data are classified as either numerical or categorical. ... by analogy.This is trial versionwww.adultpdf.com100 A practical guide for health researchersDistribution of the dataThe distribution of the data is important for the statisticians. Data fall...
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A Practical Guide for Health Researchers - part 10 ppsx
... or standard deviation. Variable Statistical term for the score in data. Variance A measure of the dispersion or variability of a group of scores.228 A practical guide for health researchersCCase–control ... which a sample is drawn from a population such that each member of the population has had an equal chance of selection. Random sampling is not haphazard sampling.230 A practical guide for health ... clinical practice and national regulations. Qualitative methods A research approach that emphasizes the non-numerical data and interpretive analysis. Quantitative methods A research approach...
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Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 5 docx
... metadata management must provide means for cap-turing and storing metadata with proper versioning to indicate its time-variant feature. Variety of Metadata Sources. Metadata for a data warehouse ... NamePackage Key Package TypeCOUNTRYREGIONTERRITORYPACKAGEFigure 1 1-9 Sales: “snowflake” schema.Analysis and look-up capabilities. Capable of browsing all parts of metadata and alsonavigating ... above list of criteria as a guide while evaluating repositorytools for your data warehouse.Metadata Integration and Standards For a free interchange of metadata within the data warehouse between...
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