Detail of "2371-42-8"

Reference

Air stripping of taste and odor compounds from water

Air stripping of taste and odor compounds from water. Lalezary, Shahla; Pirbazari, Massoud; McGuire, Michael J.; Krasner, Stuart W. (Dep. Civ. Eng., Univ. South. California, Los Angeles, CA 90089, USA). Proc. - AWWA Annu. Conf., 823-36 (English) 1983. CODEN: PWACDO. ISSN: 0360-814X. DOCUMENT TYPE: Journal CA Section: 61 (Water) Section cross-reference(s): 48 Air stripping is an economically unfeasible unit process for removal of earthy-musty geosmin [19700-21-1], 2-Me isoborneol [2371-42-8], 2-isoBu-3-MeO pyrazine [24683-00-9], and 2-iso-Pr-3-MeO pyrazine [25773-40-4] from water at neutral pH, but an effective removal alternative for 2,3,6-trichloroanisole [50375-10-5]. At concn. ~10,000 ng/L, the removal rate of the compds. is >70-90%.

Determination of subnanogram-per-liter levels of earthy-musty odorants in water by the salted closed-loop stripping method

Determination of subnanogram-per-liter levels of earthy-musty odorants in water by the salted closed-loop stripping method. Hwang, Cordelia J.; Krasner, Stuart W.; McGuire, Michael J.; Moylan, Margaret S.; Dale, Melissa S. (Water Qual. Branch, La Verne, CA 91750, USA). Environ. Sci. Technol., 18(7), 535-9 (English) 1984. CODEN: ESTHAG. ISSN: 0013-936X. DOCUMENT TYPE: Journal CA Section: 61 (Water) Section cross-reference(s): 80 Grob closed-loop stripping anal. (CLSA), coupled with gas chromatogrpahy/mass spectrometry (GC/Ms), was used to analyze for low levels of earthy-musty ordorants in potable water supply systems. An increase in both sensitivity and stripping rate was achieved by raising the ionic strength of the water samples with Na2SO4 before stripping. Concns. of 0-300 g Na2SO4/L were studied. A practical condition of 80 g/L Na2SO4/L was combined with a shorter 1.5-h stripping time to double the sensitivity of the unsalted 2-h CLSA. A detection limit of 0.8 ng/L was achieved for each of the following earthy-musty compds.: 2-isopropyl-3-methoxypyrazine [25773-40-4], 2-isobutyl-3-methoxypyrazine [24683-00-9], 2-methylisoborneol [2371-42-8], geosmin [19700-21-1], and 2,3,6-trichloroanisole [50375-10-5]. The method was validated by comparison, precision, and accuracy studies using natural source water samples. Recoveries of dosed geosmin and 2-methylisoborneol were 105 ± 15% and 106 ± 15%, resp.