organic carbon

Organic Carbon

Introduction
In this lab we ordain be measure the amount of organic fertiliser coke within our haves. The method that we bequeath be using is the high-temperature combustion method. The sample is homogenised and a small portion is injected into heated reaction chamber jam-packed with an oxidative catalyst. The water is vaporized and the organic deoxycytidine monophosphate is oxidised to CO2 and H2O. The CO2from the oxidation of organic and inorganic carbon is transported in the carrier-gas streams and is measured by means of a nondispersive infrared analyzer. The study limitation to high-temperature techniques is the magnitude and variability of the blank. We will measure physician on all the samples using the analyzer. The amount of POC is determined by measuring the TOC on an unfiltered sample and subtracting the DOC concentration of the sample on a filtered sample of the same water. A surmise was not established for this lab, so no predictions of what the experiment will yield are provided.
Materials and Methods
In order for this experiment to be performed we must first follow the instruction manual for the analyzer for assembly, testing, calibration, and operation. We then adjust the machine to the optimum combustion temperature in the lead using it.



We then homogenize our samples and analyze a homogenized blank consisting of reagent water carried through the homogenizing treatment. Remove inorganic carbon from the samples by reducing the pH to 2 or less, and purify with gas for 10 min. Some of the volatile organic carbon can be lost in this process, so recalibrating the TOC is necessary. In order to determine DOC, we filter the sample through a 0.7 glass filter, so that no extra DOC is in the sample. We then take a sample of our samples and inject them into the machine. It is strategic in this step to make a standard organic and inorganic carbon series by diluting stock solutions to bandaging the expected orbit in samples within the linear range of the machine. It is with these stock...If you want to get a full essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .