Trace perchlorates in tap water chemical fluoresce -

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Trace perchlorates in tap water chemical fluorescence spectrometry

5M conducted our previous studies have shown, the water content of the IO is usually 4 / ~ g / dm, and a content of BrO in the 2 / ~ g / dm below. If the existence of bromate and iodate, then they can be used the following methods to eliminate interference. Added to the solution of potassium iodide to be analyzed, to concentration 28rag/din, sulfuric acid, concentration of 0.1M, and to the solution of high purity grade nitrogen bubble mixture, completely remove the isolated iodine. Under these conditions, elimination of chloramines class, chlorite, free chlorine interference. Under these conditions, perchlorate does not react with the iodide. Flow of periodate and bromate were significantly higher than that of perchlorate can also be used prior to ion chromatography separation of the Salts. Water analysis. We use additives to tap water ?: Magic. 2002 Water Information Report No. 3 of 31 ferrite separation effect of iron ions in aqueous solution of (B.M. Colorado Wen Qi Branch; B. ��. ��˹�� Heights; E.H Ivan In Branch) in Ukraine most of the metallurgical plant are equipped with metallurgical slurry collection pool. Collected it is toxic and corrosive slurry, causing great harm to the environment. Metallurgical slurry distribution on the ground, the role of the filter into the ground, the developed industrial regions of Ukraine into the ecological disaster zone. If you produce 15 million tons per year ~ 30 million tons mud, the Ukraine has now accumulated a 2 to 5 million tons of mud out. Clearly, the issue metallurgy reuse mud, its urgency in the year by year. The main components of the mud pool of iron,[link widoczny dla zalogowanych], and some were in the form of gas purification dust and mud, and some form of the solution was mainly FeSO or FeC1:. This discussion will focus on these two compounds on the sediments. Traditionally extracted from the aqueous Fe \9.4. In addition, the two ferrous salts solution precipitation results in the formation of highly dispersed nature of sediment, deposited not easy, but easy to dehydration. ferrite method used can have a magnetic iron ions into the crystallization of precipitation, that is magnetic oxide iron. When the Fe (OH): sediment 99% humidity, just to follow certain conditions of humidity can change the magnetic iron oxide to 80 to 90%,[link widoczny dla zalogowanych], while in some cases, variable to 60 ~ 70%. In addition, the presence of the magnetic field makes it possible to separate the mother liquor by the particles. in the paint industry in the use of magnetic iron oxide to the system to take certain types of black pigment. So,[link widoczny dla zalogowanych], iron salts,[link widoczny dla zalogowanych], whether from the ecological point of view or approach the economic point of view, are is promising. experimental methods. In order to study the traditional methods used in extracting the effect of how Fe, prepared by several solution containing Fe ions; ferrite law is contained Fe and Fe \In both cases the same total concentration of iron ions, and (Fe] / (Fe ��] ratio equal to 0.5. In all cases using FeSO �� 7H: O and FeC1 �� 6H, O. With 25% NaOH solution was precipitated. on the residual concentration of iron using sulfosalicylic acid were light and heat measurements. The experimental results obtained 4 to 6 the average of parallel tests. The test results are cause for repetition rates; \! \; \!; 0 = e; = # write ��; the chlorate content was analyzed. In order to remove chlorine, chlorite, chloramines, bromate and iodate the impact of interference, 7cm of water to the volume of water in the dosage of potassium iodide, dubbed 28rag/din concentration; dubbed 0.1M sulfuric acid solution by adding, after 10min standing bubbling high purity nitrogen level 5min, speed 3dm/min, to the solution remove all the iodine is generated. Then, in the drawing under the conditions of the calibration curve of chlorate content. chlorate content in tap water using the proposed method and the o-benzidine method for determination of two methods in order to facilitate comparison, measured Results see table below. the details can be seen that the results of two methods is very consistent. recommended method shows satisfactory accuracy, is to determine the method of chlorate sensitivity of the Schedule to the highest perchlorate in water chemiluminescence method and salt o the results of a determination of benzidine (n = 5; P = 0.95) Cl0 adding the amount of detected CIO3, ~ g / dm water,[link widoczny dla zalogowanych], ~ g / dm a chemiluminescence method benzidine o Law of Water 024.5 �� 0.625 �� 2 5293 �� 0.630 �� 2 tap water 1034l �� 0.735 �� 3 (Li, San compilation)

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