A Guide to the Technical Evaluation of Environmental Data by Nic Korte

By Nic Korte

A consultant for the Technical evaluate of Environmental info provides the perception you wish for comparing analytical information got from environmental samples. frequently, analyses played on a number of samples can result in lost main issue at the incorrect analytes. for instance, a geologist might be aware of which hint metals can be obviously found in the resource rock underlying a website, yet now not comprehend which metals may be anticipated as a result of tire put on or which polynuclear fragrant hydrocarbons will be current due to a close-by powerplant. This booklet provide you with references to aid selection making relating to choice of contaminants.

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Tokos, S. Tsunogai, R. Wollast, and M. Zhou. 1991. The atmospheric input of trace species to the world ocean. Global Biogeochem. Cycles, 5(3):193-259. O. 1979. Global inventory of natural and anthropogenic emissions of trace metals to the atmosphere. Nature, 279:409-411. O. M. Pacyna. 1988. Quantitative assessment of worldwide contamination of air, water and soils by trace metals. Nature, 333:134-139. Page 7 Chapter 2 The Determination of Background The concept of background has often been misunderstood in environmental investigations.

25. Page iii A Guide for the Technical Evaluation of Environmental Data Nic Korte Chemical Projects Manager Environmental Sciences Division Oak Ridge National Laboratory Grand Junction, Colorado Page iv A Guide for the Technical Evaluation of Environmental Data aTECHNOMIC® publication Technomic Publishing Company, Inc. A. Copyright ã 1999 by Technomic Publishing Company, Inc. All rights reserved No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher.

Even with extraordinary precautions, trace quantities of commonly used laboratory chemicals frequently contaminate samples delivered from the field. The EPA provides data-validation guidelines for evaluating certain analytical artifacts. These guidelines, however, do not address many of the most common circumstances that are encountered. Analytical artifacts are most commonly associated with methylene chloride, and other common solvents such as acetone, methyl ethyl ketone (MEK), or 2-butanone, plasticizers such as phthalates, and the trihalomethanes commonly found in chlorinated water.

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