...Chemistry Modern Analytical Chemistry David Harvey DePauw University Boston Burr Ridge, IL Dubuque, IA Madison, WI New York San Francisco St. Louis Bangkok Bogotá Caracas Lisbon London Madrid Mexico City Milan New Delhi Seoul Singapore Sydney Taipei Toronto McGraw-Hill Higher Education A Division of The McGraw-Hill Companies MODERN ANALYTICAL CHEMISTRY Copyright © 2000 by The McGraw-Hill Companies, Inc. All rights reserved. Printed in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a data base or retrieval system, without the prior written permission of the publisher. This book is printed on acid-free paper. 1 2 3 4 5 6 7 8 9 0 KGP/KGP 0 9 8 7 6 5 4 3 2 1 0 ISBN 0–07–237547–7 Vice president and editorial director: Kevin T. Kane Publisher: James M. Smith Sponsoring editor: Kent A. Peterson Editorial assistant: Jennifer L. Bensink Developmental editor: Shirley R. Oberbroeckling Senior marketing manager: Martin J. Lange Senior project manager: Jayne Klein Production supervisor: Laura Fuller Coordinator of freelance design: Michelle D. Whitaker Senior photo research coordinator: Lori Hancock Senior supplement coordinator: Audrey A. Reiter Compositor: Shepherd, Inc. Typeface: 10/12 Minion Printer: Quebecor Printing Book Group/Kingsport Freelance cover/interior designer: Elise Lansdon Cover image: © George Diebold/The...
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...Ass Analytical chemistry What is Qualitative Analysis? Qualitative analysis is the aspect of analytical chemistry dealing with the identification of elements or compounds in an unknown substance. Very simply put, it answers the question "What is in this sample?" and usually does so with yes/no question. What is Quantitative Analysis? Quantitative chemical analysis is the aspect of analytical chemistry dealing with determining the quantity of a particular chemical is in a substance. In short, it attempts to answer questions involving "How much?" Accuracy: Accuracy refers to the agreement between experimental data and a known value. You can think of it in terms of a bull’s eye in which the target is hit close to the center, yet the marks in the target aren't necessarily close to each other. Accuracy is defined as, "The ability of a measurement to match the actual value of the quantity being measured". If in reality it is 34.0 F outside and a temperature sensor reads 34.0 F, then than sensor is accurate. Precision Precision refers to how well experimental values agree with each other. If you hit a bull’s-eye precisely, then you are able to hit the same spot on the target each time, even though that spot may be distant from the center. Precision is defined as, "(1) The ability of a measurement to be consistently reproduced" and "(2) The number of significant digits to which a value has been reliably measured". If on several tests the temperature sensor...
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...Method Development For Analysis Of Pesticides In Water Using Chromatography And Mass Spectrometry An Abstract of a Thesis Presented to the Faculty of Chemistry Department Western Illinois University In Partial Fulfillment of the Requirements for the Degree Master of Science By Prashanth Goud Kunuru September 2013 This thesis follows the style and format of the Journal of Analytical Chemistry ABSTRACT Pesticides are chemicals, artificial or natural substances, used for pest control. They have negative influence on human health when accumulated in the body. Numerous studies have clearly linked pesticides exposures to various diseases including cancer and Parkinson’s disease. Water bodies often serve as a key receiver of harmful pollutants emitted from industrial and domestic sources. Pesticides can often enter water through sewage plants, sewer overflows, surface water runoffs, and leaching from agricultural applications or even through improper disposal. Regulatory issues and public concerns over pesticide residues in water supplies have been increasing, and it is important to develop a reliable method for routine test of pesticides in water supplies. Presented here is a novel solid phase extraction technique using disposable pipette extraction (DPX) followed by chromatography and mass spectrometry analysis for determination of pesticides in water. The purpose of the current study was to evaluate the suitability of high pressure...
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...Online Analytical Processing Online Analytical Processing In today’s markets the information plays a critical role in a sustainability of any business. Companies invest in technology that allows them to collect massive amounts of data: data marts and warehouses, database structures, specialized servers, and Web-enable software products (O'Brien & Marakas, 2011). The ability to analyze and synthesize the available data can be a source of a competitive advantage for any firm. Online Analytical Processing (OLAP) is one of tools that can assist managers in making sound business decisions. OLAP is a powerful technology behind many Business Intelligence (BI) applications. It offers many capabilities for data discovery, report viewing, complex analytical calculations, and planning (Olap.com, n.d.). In other words, OLAP is a “computer-enhanced multidimensional analysis” (Achor, 2002). The term OLAP was created by E.F. Codd in 1993. According to Codd and associates, OLAP is made up of many speculative “what-if” and/or “why” data model scenarios conducted within the context of the specific historical basis (Codd, Codd and Salley, 1993). Under these scenarios, the values of major parameters are changed to show potential variances in “supply, production, the economy, sales, marketplace, costs, and/or other environmental and internal factors” (Codd, Codd and Salley, 1993, p.6). These variable groups or dimensions make up a base for the company’s planning, analysis and reporting...
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...Analytical Response to Male Pregnancy Male Pregnancy by Dick Teresi and Kathleen McAuliffe support that the technology and the demand for male pregnancy will be possible in the future. They specifically state that, "Someday a man will have a baby". They have written this article in an attempt to show why they believe this will one day become accepted and widely practiced. However, I disagree with Teresi and McAuliffe. I feel male pregnancy will never be freely practiced or accepted by any means. Teresi and McAuliffe start out their article by explaining what their general idea is for male pregnancy to occur. They state, "What we're talking about is implanting an embryo into a man's abdominal cavity, where the fetus would take nourishment, grow to term, and be delivered by an operation similar to a cesarean section. Already, this idea seems illogical to me. As a result of a man being pregnant, there must be a cesarean section to remove the baby. Even for women, this is a risk doctors prefer to avoid if possible. It puts the mother at a much greater risk of inj... ... middle of paper ... ...lt Teresi and McAuliffe's arguments for pursuing the technology of male pregnancies is not strong enough to actually do further research in the area. I feel that females are biologically established for birth where men's bodies naturally can not give birth. It seems illogical to try to change a system that has worked so well for so many years. If there is a technology dealing...
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...CHEM 5 Quantitative Analysis Laboratory Outline. 55labout.doc 02/06/05 Objectives: • development of quantitative laboratory skills • introduction to modern analytical science • Approach: • solve a series of chemical analysis problems with various techniques and instruments • certify laboratory instruments and standards • maintain laboratory records in compliance with Good Laboratory Practice Guidelines Schedule: Weeks 1-6 - Perform a Basic Set of 8 fundamental experiments (Series A) Weeks 5-15 Two parallel activities will be sustained: - Perform a series of quantitative studies (Series B) - Calibration of laboratory instruments (Each student or student group will perform each experiment in the B-series.) (Each student or student group will perform the calibration of laboratory instruments __________________________________________________________________ Series A. Basic Quantitative Techniques Introductory Experiments (A-1) Experiment 1 Use of the Analytical Balance (page 727) (A-2) Experiment 2 Use of the Pipet and Buret and Statistical Analysis (page 729) Gravimetric Analysis (A-3) Experiment 3 Gravimetric Determination of Chloride (page 730) Volumetric Analysis Acid-Base Titrations Neutralization Titrations (A-4) Experiment 6 Determination of Replaceable Hydrogen in Acid by Titration with Sodium Hydroxide (page 736) (A-5) Experiment...
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...DESIGN THINKING SYSTEM TEMA: MASALAH PARKIR DI PRASETIYA MULYA Oleh: Natasha Chiquita 0131151129 ANALYTICAL & CREATIVE THINKING BUSINESS 2i PRASETIYA MULYA 2016 Dalam tugas ini saya akan membahas masalah dan beberapa solusi mengenai masalah parkir yang ada di PraseRya Mulya. Pertama-‐tama, saya akan membahas masalah yang paling sering dialami oleh prasmulyan, yang pertama, parkiran PraseRya Mulya sangatlah gersang dan Rdak teduh, terutama lahan parkir baru yang sama sekali Rdak ada pohon ataupun atap penutup dan letaknya sangat jauh dari gedung PraseRya Mulya. Selain itu juga, lahan parkir di PraseRya Mulya banyak terdapat tanah-‐tanah merah yang membuat kotor ban mobil juga mobil dari prasmulyan, dimana lahan parkir sangat gersang sehingga keRka ada angin, tanah-‐tanah merah itu sangat mengotori mobil prasmulyan. Masalah lahan parkir yang gersang dan jauh dari gedung PraseRya Mulya...
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...conversation between the two of us at times. Anyone who knows either of us knows that if you’re hanging out with the two us you’re in for a day filled with laughs and acts of randomness. I have known Andrew for eight years now and I can confidently say he is one of a kind. He is a completely unpredictable person and I think that’s why I am so close with him. When thinking of the similarities between Andrew and myself, I think the fact that we enjoy each other’s company so much makes us as close as we are. We are two individuals, although we relate on many things, we aren’t the same person and have different views and thoughts on many subjects. When I got together with Andrew recently and began discussing family, the first topic of my Analytical Paper, Andrew replied, “I don’t have a family”. Now - 1 - before he gets the poor and abused label, this is the type of thing Andrew says on a daily basis. He’s not the type of kid to sit down and have a serious conversation with you right away. If you...
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...Bulk Polymerization of Styrene Bulk polymerization of styrene will be conducted with different initial initiator concentrations. The polymers will be analyzed for their MW and PDI by size exclusion chromatography (SEC) using a calibration curve. The MW dependence on conversion will be investigated. The effect of the initiator concentration on polymer MW will be examined. Materials. Azobisisobutyronitrile (AIBN) and toluene (HPLC) were purchased from Sigma-Aldrich and used as received. Styrene (Sigma-Aldrich) was purified by passing through a silica column to remove inhibitors. CDCl3 was purchased from Cambridge Isotope and was used as received. Methods. Reaction procedure. To a vial charged with freshly purified styrene (10 g) was AIBN (0.7g, 0.35g or 0.17g) added at room temperature. The mixtures are then heated at 80˚C in an oil bath. Seven aliquots of the reaction mixture are removed at fixed time intervals (e.g., 0, 20, 40, 60, 80,100 min, 1 week) and analyzed by 1H NMR spectroscopy for conversion and SEC for polymer MW and PDI. Sample preparation for SEC analysis. An aliquot of the reaction mixture (3mg) is dissolved in THF(1mL) and was filtered through a syringe membrane filter prior to injection into SEC column. Sample preparation for 1H NMR analysis. An aliquot of the reaction mixture (0.1-0.5 mg) is dissolved in CDCl3 (1mL) and is transferred into a NMR tube for conversion analysis. Lab report write-up. Summarize and discuss your experimental...
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...Ada Lovelace was born in London on December 10th, 1815. Her parents were Lord George Gordon Byron and Lady Anne Isabella Milbanke Byron. They didn’t have a happy relationship, and Lady Byron separated from her husband weeks after Ada was born. A few months later, Lord Byron left England, and Ada never saw him again because unfortunately he died in Greece when Ada was 8 years old. Later on in her life, Ada’s mother hired tutors to teach her science and math. She believed that if Ada engaged in these, it would prevent her from developing her father's moody and unpredictable temper. In 1835, Ada married William King. They had three children together. Ada's health suffered after a case of cholera in 1837. Doctors gave her painkillers and her personality...
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...Equipment Qualification Good Laboratory Practices About About Labcompliance Contact Labcompliance Scope Tax/Bank Information All come with 10+ Best Practice Documents: SOPs, Checklists, Examples Transfer of Analytical Procedures According to the New USP Chapter <1224> With SOPs, templates and examples for easy implementation March 21, 2013 Quality by Design (QbD) for Analytical Method Development and Validation Learn how to design robustness for easy transfer and to avoid OOS situations Recorded, available at any time Validation of Analytical Methods for GLP and Clinical Studies Learn how to design, prepare, conduct and document for FDA compliance Recorded, available at any time Eight Steps for Cost-effective Laboratory Compliance Up-to-date overview, hot topics and trends. Recorded, available at any time Verification of Compendial Methods according to the New USP Chapter <1226> Understand the new risk based approach and and get real world case studies for testing Recorded, available at any time Effective HPLC Method Development and Validation Preparation, conduct and documentation for FDA/EMA Compliance Recorded, available at any time Validation of Analytical Methods and Procedures Conduct and Document for Efficiency and FDA, USP/EP and ISO 17025 Compliance Recorded, available at any time Development and Validation of Stability...
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...ANALYTICAL BIOCHEMISTRY Analytical Biochemistry 334 (2004) 196–198 www.elsevier.com/locate/yabio Notes & Tips A spectrophotometric assay for the quantiWcation of polyethylenimine in DNA nanoparticles Martin Bertschinger, Sophie Chaboche, Martin Jordan¤, Florian M. Wurm Swiss Federal Institute of Technology Lausanne, Laboratory of Cellular Biotechnology, Lausanne VD1015, Switzerland Received 29 April 2004 Available online 28 August 2004 Since the Wrst description of polyethylenimine (PEI)1 as a gene delivery vehicle, there has been a strong interest in its use for in vivo and in vitro transfections of mammalian cells [1]. The mechanism of gene transfer by PEI is still unclear, and little is known about the formation of PEI– DNA nanoparticles. Such questions are diYcult to address because a rapid and sensitive assay for the quantiWcation of PEI in diVerent transfection media is not available. The only spectrophotometric assay for the quantiWcation of PEI is based on the dark blue cuprammonium complex that is formed when copper(II) ions are added to PEI [2,3]. This complex has a strong absorbance peak at 285 nm and a weaker one at 630 nm. Unfortunately, the absorption maximum at 285 nm is close to that of DNA (260 nm). In addition, most cell culture media contain components that absorb at this wavelength. At 630 nm, there is much less interference from biological molecules, but the signal from the cuprammonium complex is also low. We successfully adapted a commercially...
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...Method Number: EPA 200.7 Revision Number: 3.0 Date: September 3, 2010 Clinical Laboratory of San Bernardino, Inc. Standard Operating Procedure for the Determination of Metals by Inductively Coupled Plasma Spectroscopy 1. SCOPE AND APPLICATION: 1.1 This method provides procedures for the determination of dissolved elements in ground waters, surface waters, and drinking water supplies. It may also be used for the determination of total recoverable element concentrations in these waters and wastewaters. Dissolved elements can be determined after suitable filtration and acid preservation. Acid digestion procedures are required prior to the determination of total recoverable elements. To reduce potential interference, dissolved solids should be < 0.2% (w/v). Prepared samples may require dilution prior to analysis to avoid physical interferences. The method is applicable to the following analytes: Chemical Abstract Services Registry Numbers (CAS-No.) 7429-90-5 7440-39-3 7440-42-8 7440-70-2 7440-48-4 7440-50-8 7439-89-6 7439-95-4 7439-96-5 7439-98-7 7440-41-7 7440-43-9 7440-47-3 7440-02-0 7440-22-4 7440-09-7 7631-86-9 7440-23-5 7440-66-6 Dectection Limit of Reporting (DLR) 50 ppb 100 ppb 100 ppb 1 ppm 10 ppb 50 ppb 100 ppb / 40 ppb 1 ppm 20 ppb / 4 ppb 10 ppb 1.0 ppb 1.0 ppb 10 ppb 10 ppb 10 ppb 1 ppm 0.5 ppm 1 ppm 50 ppb 1.2 1.3 1.4 Analyte Aluminum (Al) Barium (Ba) Boron (B) Calcium (Ca) Cobalt (Co) Copper (Cu) Iron (Fe) Magnesium (Mg) Manganese (Mn) Molybdenum (Mo) Beryllium...
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...BS(MS) | | CONCEPT OF ANIMA AND ANIMUS CARL JUNG Swiss psychiatrist, one of the founding fathers of modern depth psychology. Jung's most famous concept, the collective unconscious, has had a deep influence not only on psychology but also on philosophy and the arts. Jung's break with Sigmund Freud is one of the famous stories in the early history of psychoanalytic thought. More than Freud, Jung has inspired the New Age movement with his interest in occultism, Eastern religions. Jung considered individuation, a psychological process of integrating the opposites including the conscious with the unconscious while still maintaining their relative autonomy, necessary for a person to become whole. Individuation is the central concept of analytical psychology. ANIMUS: Animus is the archetype of reason and spirits in women. This is the male aspect of the female psyche, as the anima is the female aspect of male psyche. This archetype is projected in various male images and characters like great artists, heroes, warriors, sportsmen, philosopher, and so forth. When identified with the animus (animus-inflated), women develop an excessive rational drive which may end up in excessive criticism and stubbornness. In animus-inflated women with strong interest in intellectual matters we find the need to impose and maintain a rigorous and schematic list of values judged the most important. There's no reflection as regard the tenures of these values, nor any aim at discussing about them...
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...Food Chemistry Food Chemistry 101 (2007) 397–400 www.elsevier.com/locate/foodchem Analytical, Nutritional and Clinical Methods Method development for the determination of manganese in wheat flour by slurry sampling flame atomic absorption spectrometry ´ Rennan G.O. Araujo, Fabio de S. Dias, Samuel M. Macedo, ´ Walter N.L. dos Santos, Sergio L.C. Ferreira * ´ ˆ ´ ´ ´ Universidade Federal da Bahia, Instituto de Quımica, Nucleo de Excelencia em Quımica Analıtica da Bahia, ´ Campus Universitario de Ondina, 40170-290 Salvador, Bahia, Brasil Received 23 June 2005; received in revised form 25 October 2005; accepted 25 October 2005 Abstract The wheat is one of the cereals more consumed in the human food in all worlds. In the form of flour it is used for preparation of breads, cookies, pizzas, cakes, and etc. This way, the knowledge of the mineral content this cereal and its flour is very important. Considering it, methods for determination of metals in these matrices are opportune and several papers have been performed. In this paper, a slurry sampling flame atomic absorption spectrometric method for the determination of manganese in wheat flour is proposed. The optimization step was performed using univariate methodology involving the variables: nature and concentration of the acid solution for slurry preparation, sonication time and sample mass. The established experimental conditions after optimization recommend a sample mass of 0.5 g, 2.0 mol LÀ1nitric acid solution and a sonication...
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