SHIMADZU SCIENTIFIC INSTRUMENTS, INC. - Analytical Chemistry

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WMiMfelnMriilSlKn DATELINE: 1979 T h e fastest growing major a n a l y t i c a l t e c h n i q u e for air/water quality monitoring. Ion Chromatography analyzes ions in solution. Its unique characteristics include: specificity, and rapid, sequential analysis. Although based on ionexchange chromatography, IC uses conductimetric detection to achieve unprecedented sensitivity levels...e.g. less than 10 ppb. IC is especially suited for the analysis of · complicated matrices · several ions in a single sample · ions in low concent r a t i o n in t h e presence of a large c o n c e n tration of other ions · trace (ppb) levels of ions. Dionex offers this powerful analytical technique in four practical instruments that perform Ion Chromatography rapidly and routinely either manually or automatically.

Air Quality • ambient aerosols · rainwater · auto exhaust · diesel exhaust · S 0 2 in the atmosphere · stack gas scrubbers · toxicants Water Quality • industrial effluents · ground waters · potable waters · brines Major C o m p o n e n t s Analyzed • fluoride · chloride · bromide · iodide · nitrite · nitrate · sulfite · sulfate · thiosulfate · phosphate · formate · acetate · oxalate · cyanide · monochloroacetate • sodium · magnesium · calcium · arsenate · ammonia Many Other Application Areas In addition to air/water quality monitoring, Ion Chromatography is equally effective for frace level multianalysis of organic fluorine, chlorine, bromine, iodine, sulfur and pho.sphorous after combustion. IC also has many applications in power production and quality control/process.

Determination of Chtoroacetytcttlorio· as Monochtoroacatate

APPLICATIONS NOTE 23

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DIONEX Dionex Corporation In the U S : 1228 Titan Way, Sunnyvale, C A 94086, 408-737-0700 In Europe: c/o 4, T h e B u c h a n , Camberley, Surry, GU15 3 X B England

CIRCLE 52 O N READER SERVICE CARD

Announcing a New Generationj)£i\TLC and Gel Scanner Award Winning CS-910 Offers Excellent Capabilities!

What's new about CS-910? It is t h e f i r s t s c a n n e r t o c o m b i n e t h e q u a n t i t a t i v e accuracy

of

TLC

densitometry

with

the

high

resolution of gel scanning. 1. * DUAL WAVELENGTH METHOD eliminates baseline fluctuations caused by local irregularities in thin-layers or gels. 2 . * ZIG-ZAG SCANNING TECHNIQUE eliminates errors caused by the irregular shape of the developed spots. 3. «Unique WORKING CURVE LINEARIZER provides excellent linearity over a wide density range—eliminates errors resulting from different size spots. 4. «Built-in BACKGROUND CORRECTOR minimizes the effects of contamination on TLC plates. 5. Extremely sensitive FLUOROMETRY MODE permits precise quantitation of ultra-micro content samples. 6. TRANSMISSION OR REFLECTION METHOD can be easily selected.

SHIMADZU SCIENTIFIC INSTRUMENTS, INC.

U.S. PATENT 4 , 0 1 3 , 3 6 4 and 3 , 9 9 4 , 5 8 7 Contact us today for detailed information on the new CS-910 scanner,Spectrophotometers, Spectrofluorophotometers or Gas Chromatographs. SHIMADZU SCIENTIFIC INSTRUMENTS, INC. 9147 Red Branch Road, Columbia. Md. 21045, USA, Phone: (301)997-1227 Telex: 87959 SHIMADZU (EUROPA) GmbH 4000 Dusseldorf 1, Johannes Weyer Str. 1 F.R. Germany Phone: (0211)314061 Telex: 08586839 SHIMADZU SEISAKUSHO LTD. 1, Nishinokyo-Kuwabaracho, Nakagyo-ku, Kyoto 6C .,.

CIRCLE 195 ON READER SERVICE CARD 570 A ·

ANALYTICAL CHEMISTRY, VOL. 5 1 , NO. 6, M A Y

1979