Reference

Determination of thiabendazole by electron-capture gas-liquid chromatography after reaction with pentafluorobenzoyl chloride

Determination of thiabendazole by electron-capture gas-liquid chromatography after reaction with pentafluorobenzoyl chloride. Nose, Norihide; Kobayashi, Susumu; Tanaka, Akio; Hirose, Akiko; Watanabe, Akinobu (Saitama Inst. Public Health, Urawa, Japan). J. Chromatogr., 130, 410-13 (English) 1977. CODEN: JOCRAM. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemicals) Thiabendazole (I) [148-79-8] was detd. as N-pentafluorobenzoylthiabendazole [61894-61-9] by electron capture gas-liq. chromatog. following the reaction of I with pentafluorobenzoyl chloride [2251-50-5]. The min. amt. of I detectable by this method was 0.01 ppm. Principal operating conditions for gas-liq. chromatog. were: glass column packed with 5% OV-101 on Gas-Chrom G (HP) (80-100 mesh); injection part and detector temp. 270.degree.; column temp. 230.degree.. Principal operating conditions for mass spectrometry were: glass column (1 m .times. 3 mm) packed with 5% OV-101 on Gas-Chrom G (HP) (80-100 mesh); column temp. 230.degree. 148-79-8 and 61894-61-9 which are cas registry numbers of chemicals are mentioned.; separator temp. 260.degree.; ion source temp. 290.degree.; flash heater temp. 270.degree.. .

Acetic anhydride and pentafluorobenzoyl chloride: two complementary derivatization reagents in chlorinated phenol determination in water

Acetic anhydride and pentafluorobenzoyl chloride: two complementary derivatization reagents in chlorinated phenol determination in water. Dano, S. D.; Chambon, P.; Chambon, R.; Sanou, A. (Lab. Chim. Anal. Toxicol., Fac. Pharm., Abidjan, Ivory Coast). Analusis, 14(10), 538-42 (French) 1986. CODEN: ANLSCY. ISSN: 0365-4877. DOCUMENT TYPE: Journal CA Section: 61 (Water) Section cross-reference(s): 80 Derivs. of chloro phenols with (MeCO)2O [108-24-7] and C6F5COCl [2251-50-5] are directly extd. from a water sample and detd. by capillary gas chromatog. on reticulated Me silicone, with 2,4,6-tribromophenol as the internal std. 95-57-8 and 15950-66-0 which are cas registry numbers of chemicals are mentioned. The acetylation procedure is more applicable to polychlorinated phenols, whereas pentafluorobenzoylation is better suited for the less chlorinated phenols. The 2 methods combined show a detection limit on the order of parts-per-billion. Application of the methods to anal. of lake water in the Abidjan region, France, at sites of com. wood loading detected chlorophenols at the 14-324 ppb level. Industrial wastewater samples from the Lyon region, France, were found to contain mono- and polychlorophenols at concns. of 6 ppb-3 ppm. .