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but I can't find anything because flame AES seems to be quite outdated. Please don't say that you cannot find anything, this is the reason (i) why physical libraries still exist and (ii) right key words are needed for proper literature search and (iii) not everything is available on the web free of cost. Most of the metals are detectable by flame atomic ...


4

Double titration also often refers to Gilson's titration method (also known as "Gilman color tests" or "Gilman double titration") for determining the concentration of organometallic compounds in hydrocarbon solvents. At the first stage the total concentration of the base in the solution is determined. At the second stage the residual ...


3

Of course, the answer is resonance. As described by Benet et al., a basic medium (pH>10) favours the Tollen's reaction. On the other hand, if we want to dissolve phenol in water, we will need OH- to generate phenolate. It means the hydroxyl group of salicylaldehyde is sensitive to the high pH, and this hinders attacking the other hydroxides to the ...


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It is not quite correct of the statement that "ascorbic acid cannot be determined by Beer Lambert's law, because it does not absorb visible light." Although the second part of the statement is true, the highlighted part is incorrect since Beer Lambert's law applies for ultra-violet range of the spectrum. According to Ref.1, ascorbic acid (Vitamin C)...


1

The table below illustrates a possible screen, values computed displayed are rounded to four decimals. The suggest is to use the observations prior the intended irradiation ($x_1, x_2$) separate from the observations after the intended irradiation ($y_1, y_2$). Per wavelength compute for $x$ and $y$ the arithmetical mean value determine the standard ...


1

The choice of analytical technique is based on three simple factors: what is available, and how low concentration do you want to go, and how much time do you have? Do you have a gas chromatograph with flame ionization detector or a UV high performance liquid chromatograph or both? This type of mixture is readily amenable to both GC and reversed phase HPLC. ...


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