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BRIEFS Helium-Purged Hollow Fiber Membrane Mass Spectrometer Interface for Continuous Measurement of Organic Compounds in Water 1335 Sensitivity at concentrations < 1 ppb is obtained in real time with a hollow fiber membrane interfaced to the ion source of a quadrupole mass spectrometer or an ion t r a p detector. Laurence E. Slivon* and Mark R. Bauer, Health and Environ ment Group, Battelle Memorial Institute, 505 King Avenue, Co lumbus, OH 43201 and James S. Ho and William L. Budde, Environmental Monitoring and Support Laboratory, Of fice of Research and Development, U.S. Environmental Protection Agency, 26 W. Martin Luther King Drive, Cincinnati, OH 45268
Technical Notes Nonevaporative Preconcentration Technique for Volatile and Semivolatile Solutes in Certain Polar Solvents 1341 Thomas F. Jenkins* and Paul H. Miyares, Research Divi sion, U.S. Army Cold Regions Research and Engineering Labo ratory, Hanover, NH 03755 Correction. Unified High-Pressure Gas and Supercritical Fluid Chromatography with Microbore Packed Columns 1344 Yan Liu* and Frank J. Yang, Dionex Corporation, 1228 Titan Way, Sunnyvale, CA 94088-3606
