Detail of "1165-91-9"

Reference

Detection of nitro-polycyclic aromatic hydrocarbons in liquid chromatography by zinc reduction and peroxyoxalate chemiluminescence

Detection of nitro-polycyclic aromatic hydrocarbons in liquid chromatography by zinc reduction and peroxyoxalate chemiluminescence. Sigvardson, Kenneth W.; Birks, John W. (Dep. Chem., Univ. Colorado, Boulder, CO 80309, USA). J. Chromatogr., 316, 507-18 (English) 1984. CODEN: JOCRAM. ISSN: 0021-9673. DOCUMENT TYPE: Journal CA Section: 59 (Air Pollution and Industrial Hygiene) Section cross-reference(s): 80 Detection limits of 0.25-8.5 pg were obtained for nitro-polycyclic arom. hydrocarbons (nitro-PAHs) in high-performance liq. chromatog. (HPLC). The nitro-PAHs are reduced on-line to the corresponding amino-PAHs and detected by peroxyoxalate chemiluminescence. Quant. redn. is achieved on a short column packed with a 1:1 mixt. of glass beads (~40m) and Zn particles (40-80m). The mobile phase consists of 70-80% acetonitrile [75-05-8], the balance being a 50-mM tris(hydroxymethyl)aminomethane hydrochloride [1185-53-1] (pH 6.5) buffer, which is necessary both for the redn. and for catalysis of the chemiluminescent reaction. The amino-PAHs are excited by energy transfer from the decompn. products of the reaction between H2O2 and bis(2,4,6-trichlorophenyl)oxalate [1165-91-9]. These reagents are introduced by post-column mixing, and the emission is detected by means of a conventional fluorescence detector with its light source turned off. The method yields a linear response over 33 orders of magnitude, and in most cases the detection limits are better than those obtained by fluorescence detection with the same fluorometer. The redn. column may be placed either before or after the anal. column, so that the analytes are eluted either as the nitro-PAHs or the corresponding amino-PAHs. This feature provides a 2nd characteristic retention time and is useful in identifying the detected compds. The technique has been applied to the selective detection of nitro-PAHs in carbon black.

Luminescent materials

Luminescent materials. (Dainippon Printing Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58164680 A2 29 Sep 1983 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09K011-06; C09D005-22; C09D011-00. ICA: F21K002-06. APPLICATION: JP 82-48043 25 Mar 1982. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) Section cross-reference(s): 42 Substrates are coated with a paint compn. contg. 9003-39-8 and 1165-91-9 are cas registry numbers of chemicals which are used as reagents here. either a peroxide or a diketone of the general formula RCOCOR or I (R = OR1, OCOR1, NR1R2; R1,R2 = alkyl, allyl, ethylene oxide polymer, propylene oxide polymer), a fluorescent compd., and a luminescence promoter to give flat luminescent materials useful in prepg. information media and wall-type display devices. Thus, a paper support was printed with an ink compn. contg. bis(2,4,6-trichlorophenyl)oxalate, di-Bu phthalate, 9,10-diphenylanthracene, and poly(vinylpyrrolidone) to give a flat-faced luminescent material which emitted pale blue light on drawing with a color-developing compn. cong. H2O2, Na salicylate, di-Bu phthalate, and iso-PrOH. .