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Meeting Reports

the use of Directional Dust Gauges to monitor air pollutionin and around a steel works. The gauge, which is cheap anduses no power, was described and the effects of wind directionand speed, gauge orientation and height above ground level onthe data obtained were discussed. Mr Snowsill [5] describedtwo devices which had been developed to monitor emissionsfrom power stations; one used the attenuation of a light beamto give a measure of the dust in a stack emission, the otherworked on an optical back-scattering system. The advantagesand disadvantages of these devices were discussed and muchuseful information given on ways of eliminating contaminationand dirtying of the optical system. Finally,, Mr Lillenfeld [6]described a number of monitoring instruments developed byhis company. He paid particular attention to a silicon photo-detector optical instrument which automatically monitoredlight scattered from dust (viz. SIMSLIN, described by thefirst speakers) and a fibrous aerosol monitor for asbestosmonitoring which used a combination of electrical align-ment of the fibres, followed by optical detection. Thecalibration and performance of this monitor was comparedto the standard NIOSH optical-counting filter method.

The meeting was very interesting, with a wide cross-sectionof ideas being presented, and was much appreciated by anaudience ofjust under 100; an attendance which was gratifyingto the organisers and speakers alike.

REFERENCES[1] ’The Design and Field Use of SIMSLIN-II a Continuously

Recording Dust Sampling Instrument’ by Dr M J Leek andDr D B Blackford (Research and Laboratory Services Division,Health and Safety Executive, Sheffield).

[2] ’Source Monitoring Systems for Particulates’ by Mr S C Wallin(Warren Spring Laboratory, Stevenage).

[3] ’Monitor for Low Level Dust Emissions’ by Mr R Ross(Unilever Ltd., Engineering Division, London).

[4] ’The Application of Directional Dust Gauges to Airborne DustMonitoring at British.Steel’s Redcar Development’ by Dr B EPrater (British Steel Corporation, Teeside Laboratories).

[5] CEGB, Experience of On-stream Dust Monitoring’ by Mr W LSnowsill (Central Electricity Research Laboratories, Leatherhead).

[6] ’Asbestos Monitoring Instrumentation’ by Mr P Lillenfeld(G.C.A. Technology, Massachusetts, USA).

Clive J. Jackson

LiteratureLiquid chromatography Spectroscopic study of Automatic data acquisitionapplication liquids and gases ’Automatic data acquisition and process-’The determination of herbicide photo- This report, ’A CARS system for the. ing with the APEX goniometer, PDPlysis products by LC/MS’ by R. F.Skinner, Q. Thomas, J. Giles and D. G.Crosby, is a recent publication from theFinnigan Corporation. Oryzalin, a pre-emergency herbicide, and its degradationproducts have been analyzed by Liquidchromatography/mass spectrometry(LC/MS). This study illustrates the useof Finnigan’s belt type interface in LC/MS analysis.Copies of the report are available from

study of liquids and gases’ by D. R.Williams and A. Stenhouse details thetechnique of coherent anti-strokes ramanspectroscopy (CARS). The basic theoryof the technique is given and an experi-mental CARS system for the study ofliquids and gases is described. Thesystem was commissioned by observingthe CARS spectra of liquids.Copies of the report, price 1.00, areavailable from HMSO, 49 High Holborn,

Finnigan Corporation, 845 West Maude London WC1 V 6HB, UK.A re, Sunnyvale, California 94086, USA.

DensitometerThe SD 3000 spectrodensitometer fromSchoeffel Instruments for the quanti-tative analysis of thin layer chromato-grams is described in an 8-page brochurepublished by the Schoeffel InstrumentDivision of Kratos. The SD 3000 is athin layer chromatogram scannercapable of making absorbance andfluorescence measurements of spotted

Liquid chromatographyHigh performance liquid chromatographyand its application in pharmaceuticalanalytical problems is the topic of a newbook now available from HewlettPackard. The 157-page book reviews theuse of HPLC for pharmaceuticalmeasurements in terms of applicationsand methodology. Prime applicationssuch as isolation of natural compounds,pharmacokinetics and drug metabolism

thin layer separations on TLC plates, are described with sample chromato-paper or film as well as agarose gels,disc gels, slab gels and electrophoreticmedia. The densitometer is modular indesign. Accessories include the necessarycarriers for various media, and anelectronic reporting integrator forthorough quantitative analysis reports.The brochure is available from KratosInc, Schoeffel Instrument Division, 24Booker St, Westwood, NJ 07675, USA.

grams and illustrative figures. Sectionson methodology explain samplepreparation .procedures, separation pro-cedures, separation techniques,-detectorsand quantitative analysis.’High performance liquid chromato-graphy in pharmaeuetieal analyses’ isavailable free of charge from Hewlett-Packard L td, King Street Lane, Winnersh,Wokingham, Berks, UK.

11/03 and IBM 370 computer, withapplication to surface texture studies ofmagnox fuel cladding’, by M.O. Boles,B.A. Bellamy and G.A. Burras, is thetitle of a recent publication from HMSO.It takes the form of a working manualenabling the user tooperate the describedsystem and make modifications to suitindividual requirements. Part onedescribes the general procedures requiredfor automatic data acquisition andprocessing. Part two describes in detailthe application of automatic datacollection to texture studies of magnoxfuel cladding.Copies of the report.are available fromHMSO, PO Box 569, London SE1 9NH,price 2. 00.

Phototitration bookA 160 page book on methods of analysisusing photometric end-point sensing hasbeen published by Mettler which coversthe theory of titration. Detailed methodsare suggested for many metals, includingcalcium, magnesium, aluminium, etcand for dissolved oxygen, sulphate,fluorine, halogens and vitamin C. Thebook contains an extensive section givingliterature references for analyticalmethods using phototitration.

’Phototitration a guide to methods’by K Mooibroek is available from MSEScientific Instruments, Manor Royal,Crawley, West Sussex, UK, price 25.00.

Volume 2 No. January 1980 35

New Literature

Gamma-ray spectrum ofnatural TiThe capture gamma-ray spectrum ofnatural Ti ’A note on the capturegamma-ray spectrum of natural Tiproduced by thermal neutrons’ is thesubject of a paper by M G Sowerby ofAERE Harwell. The data on the spectrumare reviewed.HMSO, 49 High Holborn, London WC1 V6HB, UK.

Sulphur analyserA bulletin, published by Fisher Scientificdetails how their sulphur analyzer, byemploying a specific titration reactionwith microprocessor control, providesan instrumental approach to sulphur

Preventative maintenanceschemesTechnicon’s planned preventative main-tenance schemes have been drawn up toprovide the users of their equipmentwith systems which run consistently atmaximum performance. Three schemesare available including an annual over-haul, check visits and emergency visitsor a loan module service dependingwhich scheme is opted for.A leaflet giving further details of theservice schemes is available fromCompagnie Technicon SA, 39, Boulevardde la Muxette, F-95140 Garages-les-Gonesse, France.

Clinical laboratory standardsanalysis. It is applicable to all metallurg- The 1978 annual report of the Nationalical products, has a short analysis time Committee for Clinical Laboratoryand is essentially independent of sample Standards is now available. The reportcharacteristics. Data is provided demon- lists details of the committee, a financialstrating the linearity, accuracy and statement and a summary of the 1978precision of results obtainable with steel activities. A list of the NCCLS activesamples, membership as at 31 January 1979 isFisher Scientific Co, 711 Forbes Ave, given.Pittsburgh, PA 15219, USA. NCCLS, 771 East Lancaster Ave,

Villanova, PA 19805, USA.

Nucleonics accessories brochurePackard Instrument have published a Switches bookletnew brochure giving details on their A leaflet from Techmation describes therange of scintillation cocktails, reagents, Giannini range of Enviro-Switches. Thevials and reference materials for liquid contacts of the switches are enclosedscintillations and automatic gamma within a welded chamber and arecounting techniques. The brochure which operated externally by a magneticcontains details on over 250 separate action. The leaflet describes the availableitems of scintillation counting consum- switch materials and such configurationables should be of interest to anyone as push-button switches, rotary switches,who uses radioassay techniques in the plungers, key-lock switches and limitlaboratory, switches.Copies of the brochure are available Copies of the leaflet ’Do your switchesfrom Packard Instrument Ltd, 13-17 switch off when the going gets tough?’Church Road, Caversham, Berks, are available from Techmation Ltd, 58UK. Edgware Way, Edgware, Middx, UK.

Automation of chemical oxygendemand analysesA paper is available from Techmationwhich describes the automatic measure-ment of chemical oxygen demand byJohnson COD meter in the sewagesystems of a Swedish pulp mill. Advant-ages of the COD meter, including theautomation of laboratory work and highmeasuring capacity are discussedtogether with the results of correlationstudies between BOD and COD analysesfor various wastewater types.Techmation Ltd, 58 Edgware Way,Edgware, Middx, UK.

Printed circuit board componentsA free catalogue has been published bySealectro covering their ranges of pins,jacks and links for printed circuit boards,multi-layer and flex circuits. Intendedas a guide to the readily availablestyles from their existing pin jacks andterminal pin ranges, this catalogue alsoincludes a new range of barb and swagemounting pins.Sealectro Ltd, Walton Road, Farlington,Portsmouth Hants, UK.

Chromatography newsletterThe August 1979 issue in the continuingseries of Chromatography Newsletters isavailable from Perkin-Elmer. Articles onadvanced technology applications inboth liquid and gas chromatography arefeatured in the Newsletter, seven ofwhich in this issue are written by outsidelaboratories.Copies of the newsletter can be obtainedfrom Perkin-Elmer Ltd, Post Office Lane,Beaconsfield, Bucks, UK.

National Committee for ClinicalLaboratory Standards (NCCLS)The National Committee for ClinicalLaboratory Standards is an American(United States of) organisation thatdevelops and publishes standards forclinical laboratories. By the voluntaryimplementation of these standards inUnited States laboratories, it is hopedthat the imposition of regulations byoutside agencies will be avoided.

The active membership of the com-mittee comes from organisations cover-ing the widest range of interests. Theorganisations include Industry, Govern-ment, Trade Associations, as well asProfessional and Learned Societies. The

corresponding membership includes hos-pitals, clinics and medical schoolsthroughout the United States. It is bysuch wide consultation that consensusstandards can be achieved.

The documents published cover acomprehensive range of laboratoryproblems. These include considerationof hardware requirements, instrumentservicing, materials, as well as standardsfor the evaluation of experiments,calculation of results and the expressionof data.

The standards are of three types,Approved, Tentative, and Proposed.Comments are invited from any interes-ted reader and not only from those active

in the NCCLS. It is evident that effortsare made to keep the standards as up todate and as relevant as can reasonablybe achieved. As well as the revision andrepublication of existing standards,approximately twenty new standardsare to be published in the near future.

All the standards are produced to thesame high quality. The documents areset out clearly and the subsections areclearly referenced. Also where relevant,ample bibliography is given. Althoughintended for the clinical chemist thestandards can yield useful data to thosewith an interest in related fields.

The following documents are perti-nent to Automatic Analysis:

36 Journal of Automatic Chemistry

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