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I'm using the ferric ion spectrophotometric method for thiocyanate determination and seem to be getting false positive readings. The sample contains significant chloride which I am aware can...
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Hi. I'm doing some work on arsenic speciation. I am following a paper titled, "SPECIATION OF ARSENIC IN A CONTAMINATED SOIL BY SOLVENT EXTRACTION." which calls for the use of chloroform or benzene...
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I'm using an Ultrospec 1000 UV-Vis Spectrometer. On startup it passes all the initial calibration tests until it gets to "Checking dark values" which fails. The display then shows "Too light in...
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Hi. I'm looking for a very general method to prepare a solution of persilicate from hydrogen peroxide and sodium silicate. Any information greatly appreciated.
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I am testing solutions which contain thiocyanate, cyanide and an unknown reducing agent (probably an inorganic sulphur compound). The method uses ferric ions to form the red ferric-thiocyanate...
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