Chlorine, detection

Colorless, crystalline solid or pale-yellow mass with an unpleasant, acrid odor like chlorine detectable at 0.0019 ppm. This material is hazardous through inhalation, and ingestion, and produces local skin/eye impacts. 

Thus 4-chlorophenyl 2,4,5-trichlorophenyl ether (48, Scheme 7) produced 4% of a mixture of the dibenzofurans 49 and 50. Only in the case of 2,3,4-trichlorophenyl 2,3,4,5,6-pentai hlorophenyl ether was production of dibenzofurans by formal loss of o,o -chlorine detected. Neither product was identified, but one is presumably the expected product, 1,2,3,4,8,9-hexachloro-dibenzofuran, and the other must be due to a rearrangement. Chlorination of diphenyl ether in the gas phase is unusual. At 300°C the major product is 4-chlorophenyl phenyl ether, as in the liquid phase, but as the temperature is increased (400-500°C), the amount of 4-chlorophenyl phenyl ether decreases at the expense of 3-chlorophenyl phenyl ether, and dibenzofuran is also produced. ... 

Figure 2. Cyclic voltammetry showing oxygen interference on chlorine detection. Bare amperometric sensor in a 0.1 M KC1 solution, 1) N2, 2) N2 +...

Transition metal ion-exchanged faujasites CuY, PdY and HPdY (metal content in weight% indicated as suffix), activated at 623 K (CuY) or 723 K (PdY, HPdY), respectively, in an oxygen flow of ca. 20 ml/min were used as catalysts. Details about preparation of the zeolite samples as well as experimental procedures are reported elsewhere [4]. The home-made flow apparatus was equipped with an analytical tube for chlorine detection from Draeger, Liibeck,... 

Biomarkers have the advantage over chemical analysis in that they can demonstrate whether or not an organism is meaningfully exposed. For some classes of persistent organic chemicals, especially the organo-chlorines, detection limits are now down to parts per trillion. Thus, in almost all samples these man-made chemicals can be detected, but the physiological significance is rarely known. 

Sodium hydrosulfite reagent, chemical mixed indicators Methylene blue trihydrate reagent, chemicals t-Butyl acetate reagent, chlorination Oxalyl chloride reagent, chlorine detection o-Tolidine... 

Figure 3.2 Chlorine Detection Strength Versus Bottle Distance from Detector [Summers et al, 1990b Shown are responses from two detector models...

The Dohrmann DN-1000 can be converted to the determination of sulfur and chlorine by adding the MCTS 130/120 microcoulometer detector modules. The control module, furnace module, and all the automated sample inlet modules are common to both detectors. The system automatically recognises what detector and sample inlet is present and sets the correct operating parameters for fast, simple conversion between nitrogen, sulfur, and chlorine detection. 

Sulima T, Knittel T, Freitag G, Widanarto W, Eisele I (2005) A gas FET for chlorine detection. In Proceedings of IEEE sensors 2005 conference, Irvine, CA, October-November, pp 113-115. 

At the later end of temporal plasma history, after long delay times very important analytical information was revealed. For example, spectra from diatomic molecules of halogens and alkali-earth elements were detected after a 25 ps delay these spectra enable fluorine and chlorine detection much more easily than the traditional F and Cl ionic lines. After a delay of more than 100 ps, sometimes plasma-induced luminescence was detected it is very effective for rare-earth elements identification. 

Chlorine detection in concrete is very important for its quality evaluation. Concrete contains a lot of calcium, thus CaCl molecular emission is a potential tool for Cl quantitative analysis in concrete. Figure 8.53 presents the data on CaCl molecular emission in concrete with 4 and 1 % of Cl. It is confidently detected at such levels and it seems that the 0.2 % of Cl concentrations may be detected by this method. 

Comments Commercially available. Detects primary, secondary, and tertiary alcohols as well as phenols (negative result was obtained for some tertiary alcohols ) to a limit of 16 Provides a violet to pink color for alcohol and chlorine detection and a red... 

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