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Instrumentation Environmental
monitoring of up to 15 hazardous components in plant process and exit streams. The analyzer can be used to automatically divert a wastewater stream contaminated above predetermined limits into a holding tank for treatment. KVB/Analect 410
monitoring.
Model 6000 environmental monitoring system assesses water quality in lakes, rivers, wetlands, e s t u a r i e s , and coastal waters. The system measures dissolved oxygen, conductivity, salinity, t e m p e r a t u r e , resistivity, depth, and total dissolved solids. It will function unattended for weeks in water as shallow as a few inches or as deep as 500 ft. YSI 401 T h e r m a l a n a l y s i s . Model TGD7000RH TGA/DTA system includes a gold-plated IR imaging furnace that heats samples by radiation rather than convection, allowing for controlled heating rates to 500 °C7 min and a temperature range up to 1400 °C. Astra Scientific I n t e r n a tional 402 Water analysis. AutoTrace extraction workstation automates the solidphase extraction of trace contaminants from water. The system, which accommodates sample volumes ranging from 30 mL to 2 L, can be used to process up to six samples simultaneously with precision syringes and pumps. Zymark 403 AA. S p e c t r A A - 1 0 / 2 0 P l u s s e r i e s spectrometers feature narrow beam optics that match the optical beam to the flame and furnace cross sections for maximum light throughput and sensitivity. Flame microsampling minimizes burner blockage for difficult matrices. Varian 404 Detector. LC1250, a fully programmable spectral scanning fluorescence detector for HPLC, features excitation and emission wavelength settings t h a t are programmable between 200 and 650 nm in 2-nm steps. Up to eight wavelength change programs can be stored in a nonvolatile memory. ICI Instruments 405 Surface analysis. PHI 7000 TOFSIMS surface analysis system features an advanced reflectron-based TOF analyzer, a fast pulsed ion gun,
MS. Reflex matrix-assisted laser desorption time-of-flight mass spectrometer system features a gridless ion reflectron for time and geometric focusing of ions. The software includes an intuitive menu-mouse interface as well as multitasking and networking capabilities. Bruker Instruments 411
Pulsed amperometric detection system for carbohydrate analysis consists of a low-dispersion, four-solvent gradient pumping system, a pulsed electrochemical detector, and a postcolumn addition system. Waters Chromatography Division of Millipore 406 and a programmable time-to-digital converter. The software includes a flexible interactive database that can be customized for specific applications. Perkin Elmer 407 GC/MS. HP MS ChemSystem is a multiuser, multitasking, multiinstrument gas chromatograph/mass spectrometer system for laboratories performing high-volume target compound analyses. Modem communication allows remote access to the system. Hewlett-Packard 408 Nitrogen. Model 380 inorganic nitrogen analyzer is a continuous-flow system for the determination of inorganic nitrogen in water-soluble samples. Applications include the determination of ammonia or inorganic nitrogen in soil, wastewater, and process streams. Alltech Associates 409 Wastewater. Sparge-IR wastewater analyzer provides on-line real-time
406 A · ANALYTICAL CHEMISTRY, VOL. 64, NO. 6, MARCH 15, 1992
Software Data fitting. Diffeq with Fitting for MS-DOS systems provides l e a s t squares parameter estimation with differential equations. Features include a drop-down menu interface and publication-quality hard copy output. MicroMath Scientific Software 412 Ion chromatography. Database contains more than 4000 entries covering suppressed and nonsuppressed ion chromatography. Each entry includes solutes and retention time; column type, dimensions, and flow rates; detection system; hardware; and author and journal citation. Wat e r s C h r o m a t o g r a p h y Division of Millipore 413
Manufacturers' Literature Life s c i e n c e s . Biosystems Reporter, No. 14, features articles on instrumentation for microvolume sample preparation and on microsatellites as markers of choice for automated genetic disease analysis. 12 pp. Applied Biosystems 414
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