Preliminary results indicate that it may be possible to identify the functional group present in many organic compounds from chemical ionization mass spectra recorded with nitric oxide as the reagent gas.

chamber which has a greater heat capacity and a better temperature controller would probably increase the sensitivity considerably.

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This report describes the automation of colorimetric and fluorometric methods for the determination of low levels of formaldehyde and related compounds in drinking water, natural water and industrial effluents.the fluorometric method is based on the reaction of formaldehyde with 2, 4 -pentanedione and ammonia to form a fluorescent product. The colorimetric method utilizes chromotropic acid andThe fluorometric method was found to be much more specific than the colorimetric procedure and both methods are capable of determining formaldehyde down to 10 ugllitre at a rate of 10 -20 samples per hour.The results of a preliminary survey,concerning the occurrance of formaldehyde and related compounds in a wide variety of samples, ranging from drinking waters to industrial effluents, are also reported.The results indicate that considerable quantities of these conpounds are present in some waters receiving industrial wastes and these results 53Copyright01974 by Marcel Dekker, fnc. All Rights Reserved. Neither this work nor any part may b e reproddced or transmitted in any form or by any means, electronic or mechanical, including photocopying, microfilming, and recording, or by any information storage and retrieval system, without permission in writing from the publisher. Downloaded by [University of Florida] at 17:03 10 June 2016 AFGHAN ET AL. also show that those samples which contain formaldehyde also indicate the presence of other carbonyl compounds.